Literature Archive: 2020 | 2021 | 2022 | 2023 | 2024
Not all members of the International Cichorieae Network do have access to botanical libraries. As a service we would like to point to recent publications regarding Cichorieae. However, some articles will escape our attention. Therefore, your hints to recent publications are always welcome.
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Collected by Norbert Kilian (Berlin) & Robert Parsons (Melbourne)
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11 July 2024
Wang Z.-H., Zhong Q.-Q., Li Y.-L., Xu J.-J., Sun Q.-W. 2024: Ixeridium nujiangense (Crepidinae, Cichorieae, Asteraceae), a new species from southwest Yunnan, China. – PhytoKeys 244: 163-174.
Abstract
"In this paper, we describe Ixeridium nujiangense, a novel species identified in southwestern Yunnan, China. Two populations have been found along the riverbanks of the Nujiang River in Yongde and Zhenkang Counties. Morphologically, I. nujiangense is most similar to the recently described I. malingheense, but it can be readily distinguished by its mostly divided basal leaves, narrower non-clasping cauline leaves, notably shorter corolla tube, pale brown anthers, and considerably longer beak of achenes."
4 July 2024
Kashin A. S., Parkhomenko A. S., Kondratieva A. O., Kritskaya T. A., Bogoslov A.V. & Shilova I. V. 2024: Diversity of the genus Chondrilla L. (Asteraceae) in Eastern Europe. – Biodiversitas 25: 1901–1910.
Abstract
"The genus Chondrilla (Asteraceae) has a complex taxonomic structure due to widespread apomictic reproduction. This study aimed to identify the variability and clarify the status of Chondrilla species growing in Eastern Europe (European Russia and Western Kazakhstan). The study of morphological variability in Chondrilla species was assessed using 28 morphometric parameters. Moreover, 840 specimens from 28 populations of 8 Chondrilla species from Eastern Europe were analyzed. Principal Component Analysis (PCA), Nonmetric Multi-Dimensional Scaling (NMDS), recursive decomposition, and random forest algorithm were used for analysis. The ordination methods divided the studied samples into two groups: the first group included samples of C. ambigua and C. pauciflora, and the second group included all remaining samples. Following the resulting binary trees, obtained by recursive decomposition method and the random forest algorithm, a determination key was compiled for the Chondrilla species of Eastern Europe. The high level of morphological variation in Chondrilla and its distribution characteristics revealed in this study by numerical taxonomy and recursive decomposition methods, along with our previous studies results, show that only C. ambigua is a morphologically and genetically well-separated species, including C. pauciflora as a triploid cytotype; C. canescens, C. graminea, C. latifolia and C. juncea are synonyms with the priority name C. juncea and should be considered as subspecies; and C. brevirostris and C. laticoronata are hybrids with C. ambigua as maternal parent."
3 July 2024
Liu Q. & al. 2024: Rediscovery of Youngia longipes reveals a new species of Youngia (Asteraceae) in China. – Phytotaxa 655: 21–36.
Abstract
"Youngia wulingensis, a new species of Asteraceae from Wuling Mountain, central China, is described and illustrated. This new species had been identified as Y. longipes for a long period of time. However, we rediscovered Y. longipes in its type locality, re-examined the type specimen of Y. longipes, and found out many differences between Y. longipes and Y. wulingensis, which can be easily distinguished by the shape of leaves and especially the cylindrical involucre with a keel-like central rib. The phylogenetic analyses based on the internal transcribed spacers (ITS) and one chloroplast marker (rps16) indicated that three accessions of Y. wulingensis were grouped together (BP = 1 and LP = 0.98) and appeared sister to Y. zhengyiana with strong support (PP = 1, LP = 0.98). Finally, we characterised the new species by morphological comparisons and molecular analyses."
19 June 2024
Moreira-Muñoz A., Monge M., Grossi M. A., Ávila F. A., Morales-Fierro V., Heiden G., Britto B., Beck S., Nakajima J. N., Salgado V. G., Rodríguez-Cravero J. F. & Gutiérrez D.G. 2024: South America holds the greatest diversity of native daisies (Asteraceae) in the world: an updated catalogue supporting continental-scale conservation. – Frontiers Pl. Sci. 15(1393241): 1–9 +supplements.
Abstract
"Asteraceae is the world’s richest plant family and is found on all continents, in environments ranging from the coast to the highest mountains. The family shows all growth forms and, as in other angiosperm families, species richness is concentrated in tropical regions. South America has the highest diversity of Asteraceae in the world, yet taxonomic and distributional knowledge gaps remain. This study compiles an updated catalog of Asteraceae native to South America, based on national and regional checklists and ongoing large-scale flora projects. The resulting checklist includes a total of 6,940 species and 564 genera native to South America to date, which represent about a quarter of the family’s global diversity. Countries already considered to be megadiverse show the greatest diversity, such as Brazil with 2,095 species, followed by Peru (1,588), Argentina (1,377), and Colombia (1,244), with this diversity mainly focused on the Brazilian Highlands and the Andes. Species endemism also peaks in Brazil, but Sørensen distances reveal the Chilean flora to be eminently different from the rest of the continent. Tribes better represented in the continent are Eupatorieae, Senecioneae and Astereae, also with a remarkably presence of entirely South American subfamilies representing earliest diverging lineages of the Asteraceae, such as Barnadesioideae, Wunderlichioideae, Famatinanthoideae, and Stifftioideae. It is estimated that the discovery and description curves have not yet stabilized, and the number of species is likely to increase by 5 to 10% in the coming years, posing major challenges to continental-scale conservation."
13 June 2024
Kirchmeier P., Meierott L. & Jung K. 2023: Taraxacum sect. Borealia Hand.-Mazz. in den Alpen. – Forum Geobot. 11: 35–56.
Abstract
"The presence of Taraxacum microspecies of the section Borealia in the European Alps has been known from France, Suisse, Austria, Italy and Slowenia. The five known species are Taraxacum gallicum, T. handelii, T. kraettlii, T. mazzettii and T. melzerianum. From 2004 up to 2014 these localities have been visited. Detailed examinations of many collections make it possible to add characteristics and precise the descriptions and correct mistakes, eliminate ambiguities and fill gaps in the original descriptions. Numerous photos, drawings and a new determination key will make the access to the section Borealia easier. A new species of section Borealia, T. cimae-gallinae, from the mountain Hühnerspiel near Sterzing (Italy, South Tyrol) is described. The habitats of the Borealia in the alpine level are mostly gravel floors on wind-swept ridges or on summit levelings. The environment of Borealia-species is threatened by ski tourism or by the changes from global warming."
4 June 2024
Fateryga V. V., Kiliev B. R., Svirin S. A. & Fateryga A. V. 2024: Lectotypification and comments on the taxonomic status of Taraxacum pobedimovae Schischk. (Asteraceae: Crepidinae). – Turczaninowia 27: 32–38.
Abstract
"Taraxacum pobedimovae Schischk. was previously considered a synonym of T. hybernum Steven. The type of the former species consists of several plants mounted on a single specimen, which were found to belong to two different taxa: typical T. hybernum and the species previously referred to as the pinkish-achened form of T. hybernum. The lectotype of T. pobedimovae corresponding to the pinkish-achened form is designated. Taraxacum pobedimovae differs from T. hybernum by pinkish (not brown) achenes which are longer and with narrower spinules in comparison with those of the latter species. In addition, T. pobedimovae usually has larger and more numerous leaves with prominently purple veins, longer scapes, and larger capitula, as well as a larger and more branched root. The differences between these two species were confirmed by RAPD, ISSR, and SSR markers as well. The length of the achene beak, previously reported as the diagnostic character, is not useful to distinguish T. pobedimovae from T. hybernum."
4 June 2024
Ferrer-Gallego P. P. 2024: Typification of the Linnaean name Crepis vesicaria (Compositae: Cichorieae) revisited. – Taxon 73: 615-618.
Abstract
"The typification of the Linnaean name Crepis vesicaria (Compositae: Cichorieae) is revised. This name had previously been “lectotypified” by Babcock in 1947 on a specimen kept in LINN (Herb. Linnaeus No. 955.3). However, Linnaeus cited in the protologue a specimen from the Joachim Burser Herbarium, currently preserved at UPS-BURSER (Herb. Burser VI: 70). According to the International Code of Nomenclature for algae, fungi, and plants (Art. 9.12 of the Shenzhen Code of 2018), this is a syntype which must be chosen as the lectotype."
4 June 2024
Moonlight P. W., Baldaszti L., Cardoso D., Elliott A., Särkinen T. & Knapp S. 2024: Twenty years of big plant genera. – Proc. R. Soc. B 291(20240702): 1–10.
Abstract
"In 2004, David Frodin published a landmark review of the history and concepts of big plant genera. Two decades of taxonomic activity have taken place since, coinciding with a revolution in phylogenetics and taxonomic bioinformatics. Here we use data from the World Flora Online (WFO) to provide an updated list of big (more than 500 species) and megadiverse (more than 1000 species) flowering plant genera and highlight changes since 2004. The number of big genera has increased from 57 to 86; today one of every four plant species is classified as a member of a big genus, with 14% in just 28 megadiverse genera. Most (71%) of the growth in big genera since 2000 is the result of new species description, not generic re-circumscription. More than 15% of all currently accepted flowering plant species described in the last two decades are in big genera, suggesting that groups previously considered intractable are now being actively studied taxonomically. Despite this rapid growth in big genera, they remain a significant yet understudied proportion of plant diversity. They represent a significant proportion of global plant diversity and should remain a priority not only for taxonomy but for understanding global diversity patterns and plant evolution in general." [includes Hieracium andTaraxacum on ranks 3 and 2, respectively]
30 May 2024
Gottschlich G. 2024: Pilosella multiflora, der korrekte Name für Pilosella guthnikiana. – Kochia 17: 17–20.
Abstract
"Eine bislang unberücksichtigt gebliebene Publikation von Gaudin (1820) macht eine Umbenennung von Pilosella guthnikiana zu P. multiflora nötig. Für das Basionym Hieracium multiflorum Schleich. ex Gaudin wird ein Schleicher-Beleg aus dem Herbarium Lausanne (LAU-0122837) als Neotypus festgelegt und dieser abgebildet. Zwei zugehörige Unterarten werden zu P. multiflora kombiniert."
29 May 2024
Roxo G., Silva L., Borges Silva L., Rego R., Resendes R. & Moura M. 2024: Early detection of Youngia japonica (L.) DC. (Asteraceae) in São Miguel Island, Azores, Portugal. – Invasive Pl. Sci. Managem. 17: 3–8.
Abstract
"Youngia japonica (L.) DC. was recently discovered on the Azorean island of São Miguel. This species is a cosmopolitan herb that has been reported to be invasive in several regions of the world. It is unclear when and how this plant arrived in São Miguel, Azores. Nevertheless, we hypothesize that this is an unintentional and recent introduction. The populations are expanding in São Miguel, and action is needed to mitigate potential damage to native ecosystems."
27 May 2024
Šarhanová P., Majeský Ľ. & Sochor M. A. 2024: A novel strategy to study apomixis, automixis, and autogamy in plants. – Pl. Reprod. https://doi.org/10.1007/s00497-024-00499-6.
Abstract
"Reproduction may be seen as one of the driving forces of evolution. Flow cytometric seed screen and genotyping of parents and progeny are commonly employed techniques to discern various modes of reproduction in flowering plants. Nevertheless, both methods possess limitations constraining their individual capacity to investigate reproductive modes thoroughly. We implemented both methods in a novel manner to analyse reproduction pathways using a carefully selected material of parental individuals and their seed progeny. The significant advantage of this approach lies in its ability to apply both methods to a single seed. The introduced methodology provides valuable insights into discerning the levels of apomixis, sexuality, and selfing in complex Rubus taxa. The results may be explained by the occurrence of automixis in Rubus, which warrants further investigation. The approach showcased its effectiveness in a different apomictic system, specifically in Taraxacum. Our study presents a comprehensive methodological approach for determining the mode of reproduction where flow cytometry loses its potential. It provides a reliable and cost-effective method with significant potential in biosystematics, population genetics, and crop breeding."
27 May 2024
Gianguzzi V., Di Gristina E., Barone G., Sottile F. & Domina G. 2024: Seed germination and vegetative and in vitro propagation of Hieracium lucidum subsp. lucidum (Asteraceae), a critically endangered endemic taxon of the Sicilian flora. – PeerJ 12(e16839): 1–20.
Abstract
"Hieracium lucidum subsp. lucidum is a critically endangered endemic taxa of the Sicilian flora. It is a relict of the Tertiary period surviving on the cliffs of Monte Gallo (NW-Sicily). This research focused on finding the best protocols for seed germination and vegetative and in vitro propagation to contribute to ex situ conservation. Seed germination tests were carried out using constant temperatures of 15 °C, 20 °C and 25 °C in continuous darkness and an alternating temperature of 30/15 °C (16 h/8 h, light/dark). The seeds had no dormancy, and a high germination capacity (70–95%) was obtained at all tested thermoperiods. The possibility of vegetative propagation of the taxon was evaluated through the rooting capacity of stem cuttings treated or not treated with indole-3-butyric acid (IBA). All cuttings were treated with IBA rooted within 2 months, while only 50% of the untreated cuttings were rooted within a longer time. An efficient protocol for rapid in vitro propagation from leaf portions was developed. The response of explants was tested on hormone-free Murashige and Skoog (MS) basal medium and MS enriched with different types of cytokinins: 6-Benzylaminopurine (BAP) and meta-Topolin (mT) in combination with naphthaleneacetic acid (NAA) and 2,4-Dichlorophenoxyacetic acid (2,4-D) at the same concentration. The combination of mT (2 mg L−1) and 2,4-D (1 mg L−1) in the medium was the most effective and showed the highest percentage of callus induction and the mean number of regenerated shoots. The maximum rate of root regeneration and the maximum number and length of roots were obtained on hormone-free MS and MS enriched with IBA at concentrations of 1 mg L−1. From the results obtained, it can be concluded that H. lucidum subsp. lucidum can be successfully propagated using one of the tested techniques, subject to the availability of the material for reproduction."
23 May 2024
Sennikov A. 2024: The taxonomic circumscription and nomenclatural history of Pilosella suecica (Asteraceae): a special case of grey literature in taxonomic botany. – Plants 13(10, 1301): 1–19.
Abstract
"The taxonomic history, nomenclature and application of the oldest species names available for the common hybrids between Pilosella caespitosa and P. lactucella are reviewed. Elias Fries created a nomenclatural and bibliographical collision when he replaced a printed label of his exsiccata Herbarium normale with its second version, distributed at a later date, in which the protologue of Hieracium suecicum had appeared. In this protologue, the new species name was validly published with a mere reference to the original description of H. auricula var. majus, thus being based on the type of the latter. In a later fascicle of the same exsiccata, Fries excluded this synonym and distributed a different morphotype of H. suecicum, which caused taxonomic confusion and re-description of the same taxon under the name H. fennicum. The surviving original material of H. auricula var. majus is rejected, and its neotype is designated, making H. suecicum the correct name for the hybrids strictly intermediate between P. lactucella and P. caespitosa. Such hybrids constitute the most common hybridogenous taxon of Pilosella in Scandinavia, Finland and neighbouring Russia, with many synonyms described from this area and partly typified here. Another hybridogenous taxon of the same origin, more similar to P. lactucella and previously known as P. cochlearis, is correctly named P. stipitiflora comb. nov. The nomenclatural value and bibliographic complexity of exsiccata, a commonly underestimated kind of grey literature in taxonomic botany, are further highlighted."
17 May 2024
Son D. & al. 2023: Effects of land-use types and the exotic species, Hypochaeris radicata, on plant diversity in human-transformed landscapes of the biosphere reserve, Jeju Island, Korea. – Pl. Diversity 45: 685–693.
Abstract
"Land-use and plant invasion influence biodiversity. Understanding the effects of land-use types and invasive plants on the ecosystem is crucial for better management and the development of strategic plans for increasing biodiversity in Jeju Island, Korea, a designated Biosphere Reserve by the United Nations Education, Scientific, and Cultural Organization. The effect of the most dominant invasive exotic species, Hypochaeris radicata, on the four land-use types of Jeju Island was investigated. Plant composition, soil characteristics, and plant diversity among four land-use types (cropland, green space, neglected land, and residential) were compared. Among the land-use types, croplands had the most diverse plant composition and the highest richness in exotic and native plant species. Croplands, such as tangerine orchards, which are widely distributed throughout Jeju Island, showed the highest plant diversity because of medium intensity disturbance caused by weed removal. The relative cover of H. radicata did not differ between land-use types. However, H. radicata invasion was negatively related with plant species richness, making this invasive species a threat to the biodiversity of native herbs present in land-use areas. H. radicata adapts to areas with a broad range of soil properties and a variety of land-use types. Therefore, it is crucial to monitor land-use types and patterns of plant invasion to guide the implementation of consistent management and conservation strategies for maintaining ecosystem integrity of the transformed habitat in Jeju Island."
14 May 2024
Dudáš M., Kolarčik V., Šuvada R. & Vašut J. 2024: Taraxacum sect. Erythrosperma (Asteraceae, Cichorioideae) in Slovakia IV. Distribution of T. erythrospermum and synonymisation of T. slovacum. – Phytotaxa 646: 265–281.
Abstract
"The group of lesser dandelions (Taraxacum sect. Erythrosperma) is represented by more than 215 species growing in mostly xerothermic habitats throughout Europe. The only known species with sexual reproduction in this section is the diploid T. erythrospermum. It occurs in southern parts of Europe and reaches its northern limit in central Europe. In this study, we aimed at a detailed mapping of the species distribution in Slovakia in order to understand the spatial distribution at its northern range limits. We found that it is the most common xerothermous species in Slovakia, growing on various substrates such as limestone, dolomite, travertine, volcanic rocks and sands, while it is less common on brown soils and ruderal biotopes. It is a characteristic species of the class Festuco-Brometea with an altitudinal range extending from 120 to 650 m above sea level. We delimited the northern distribution and documented its highest occurrence at approximately ca 1500 m a.s.l. Two taxa, T. slovacum and T. punctatum, were described from the territory of Slovakia and we discuss their relationships to T. erythrospermum, with which T. slovacum is synonymised here for the first time. We also present new data on the genome size of T. erythrospermum in Slovakia, which range from 1.529 to 1.604 pg with a mean of 1.554 pg (± 0.024 SD), and provide chorological data on a remarkable morphological variant with grey-coloured achenes."
29 April 2024
Szeląg Z. 2024: Two new species in Hieracium sect. Alpestria (Asteraceae) from Mt. Babia Góra, Western Carpathians, Poland. – Phytotaxa 645: 278–285.
Abstract
"Two apomictic, tetraploid (x=9) species in Hieracium sect. Alpestria are described from Mt. Babia Góra, the northernmost mountain massif in the whole Carpathian chain with an alpine belt. Hieracium babiogorense combines the morphological features of H. prenanthoides s.lat. and H. bifidum s.lat., and H. besseri is of presumably hybrid origin between H. prenanthoides s.lat. and H. caesium s.lat. Both new species are illustrated with photos of the holotypes and live plants in the type localities."
29 April 2024
Fainelli F. Gottschlich G. & Orsenigo S. 2024: Nomenclatural notes on some names in the Hieracium tenuiflorum group (Asteraceae) of the Alps. – Phytotaxa 645: 131–148.
Abstract
"The names belonging to the Hieracium tenuiflorum group (sect. Hieracium) as published by Zahn and others are discussed and typified. The accepted names are H. tenuiflorum, H. tenuiflorum subsp. austrosilvularum, H. tenuiflorum subsp. glaucoviolascens, H. tenuiflorum subsp. pictoprasinum, H. tenuiflorum subsp. pseudomerianum, H. tenuiflorum subsp. sebini and H. murorum subsp. nemorensifolium. Where possible, also names at the ranks lower than species and subspecies (i.e. varieties, subvarieties, forms and subforms) were typified. Hieracium tenuiflorum is typified by specimens preserved in Herbarium Bicknell. All the subspecies were typified by specimens preserved in G, PAV and TR, except H. tenuiflorum subsp. austrosilvularum whose original material went very likely lost. Eight varieties, two subvarieties, fifteen forms and three subforms were typified by specimens preserved in B, BASBG, G, GRM, PAV, TR and Z/ZT."
29 April 2024
Xu Q., Yang L., An M.-T., Yu J.-H., Liu F. & Li Z. 2024: Ixeridium malingheense (Asteraceae), a new species from southwestern Guizhou, China. – Phytotaxa 645: 163–171.
Abstract
"A new Asteraceae species, Ixeridium malingheense Z.Li & Q.Xu sp. nov., from Xingyi City, south-western Guizhou, China, is described and illustrated based on morphological and molecular analyses. Compared with the other species of the genus, the species is most similar to I. yunnanense in a small stature, linear-lanceolate stem leaves, and short phyllaries. However, it is easily distinguished from the latter by its smaller basal leaves 18–34 × 5–13 mm (vs. 10–25 × 5 mm), spatulate or long-spatulate (vs. elliptic, lanceolate, or oblanceolate), petioles ca. 30–55 mm (vs. 10 mm to absent), outer phyllaries 1-seriate (vs. 2-seriate, unequal), achenes smaller 2.0–3.0 × 0.5–1.0 mm (vs. 3.2 × 0.6 mm), and a flowering period of March to May (vs. June). Molecular phylogenetic analyses based on nuclear ITS sequence data determined the systematic position of I. malingheense in Ixeridium."
29 April 2024
Kim H.-B., Lee D.-G. & Kim S.-C. 2023: Plastomes of Sonchus (Asteraceae) endemic to the Atlantic Madeira archipelago: Genome structure, comparative analysis, and phylogenetic relationships. – PLoS ONE 18(6, e0287523): 1–19.
Abstract
"The woody Sonchus alliance, a spectacular example of adaptive radiation with six genera and approximately 31 species, is found exclusively on three Macaronesian Islands (Madeira, Canaries, and Cape Verdes) in the Atlantic Ocean. Four of the Sonchus taxa are restricted to Madeira, including shrubs and small trees at higher elevations (S. fruticosus and S. pinnatus), and caudex perennials in the lower coastal areas (S. ustulatus subsp. maderensis and S. ustulatus subsp. ustulatus). The Madeiran Sonchus stemmed from a single colonization event that originated from the Canaries < 3 million years ago. However, the plastome evolution and species relationships remains insufficiently explored. We therefore assembled and characterized the plastomes of four Sonchus taxa from Madeira and conducted a phylogenomic analysis. We found highly conserved plastome sequences among the taxa, further supporting a single and recent origin. We also found highly conserved plastomes among the cosmopolitan weedy Sonchus, Macaronesian Sonchus in the Atlantic, and Juan Fernández Islands Dendroseris in the Pacific. Furthermore, we identified four mutation hotspot regions (trnK-rps16, petN-psbM, ndhF-Ψycf1, and ycf1) and simple sequence repeat motifs. This study strongly supports the monophyly of Madeiran Sonchus. However, its relationship with the remaining woody Sonchus alliance from the Canary Islands requires further investigation."
29 April 2024
Ingimundardóttir G. V., Tyler T., Cronberg N., Hedrén M. & Andersson S. 2024: Dressed for the occasion! Ecotypic divergence, phenotypic plasticity and taxonomic value of capitulum characters of Scorzoneroides autumnalis (Asteraceae). – Nordic J. Bot. 2024(e04211): 1–11.
Abstract
"Scorzoneroides autumnalis is a highly polymorphic perennial with several described infraspecific taxa, largely differing in involucre colour and indumentum intensity. Here, we examine the role of ecotypic divergence and phenotypic plasticity in shaping large-scale geographical variation in these characters. We collected phenotypic data from herbarium specimens and garden-grown plants of S. autumnalis, representing several habitats throughout Scandinavia and Iceland, and subjected progenies from controlled crosses within a subset of the common garden material to different temperature regimes to assess patterns of phenotypic plasticity. Our results strongly suggest that colour and indumentum of involucral bracts, as well as the size of capitula (measured by ligule length), are environmentally plastic and much affected by temperature. Reduced temperature resulted in significantly larger capitula, with both thicker and darker involucre indumentum. Since dark colouration, dense indumentum and large floral structures have been shown to facilitate heat retention and insect visitation in other plant species growing in cold climate, we hypothesize that plants of S. autumnalis benefit from possessing these features under cool conditions, and that much of the geographical variation in capitulum characters reflects adaptive phenotypic plasticity rather than ecotypic divergence. For this reason, we deem these characters to have a low taxonomic value for distinguishing infraspecific taxa within S. autumnalis."
29 April 2024
Bicknell R., Gaillard M., Catanach A., McGee R., Erasmuson S., Fulton B. & Winefield C. 2023: Genetic mapping of the LOSS OF PARTHENOGENESIS locus in Pilosella piloselloides and the evolution of apomixis in the Lactuceae. – Frontiers Pl. Sci. 14(1239191): 1–16.
Abstract
"Pilosella piloselloides var. praealta (syn. P. praealta; Hieracium praealtum) is a versatile model used to study gametophytic apomixis. In this system apomixis is controlled by three loci: one that controls the avoidance of meiosis (LOA), one that controls the avoidance of fertilization (LOP) and a third that controls autonomous endosperm formation (AutE). Using a unique polyhaploid mapping approach the LOP locus was mapped to a 654 kb genomic interval syntenic to linkage group 8 of Lactuca sativa. Polyhaploids form through the gametophytic action of a dominant determinant at LOP, so the mapped region represents both a functional and a physical domain for LOP in P. piloselloides. Allele sequence divergence (ASD) analysis of the PARTHENOGENESIS (PAR) gene within the LOP locus revealed that dominant PAR alleles in Pilosella remain highly similar across the genus, whilst the recessive alleles are more divergent. A previous report noted that dominant PAR alleles in both Pilosella and Taraxacum are modified by the presence of a class II transposable element (TE) in the promoter of the gene. This observation was confirmed and further extended to the related genus Hieracium. Sufficient differences were noted in the structure and location of the TE elements to conclude that TE insertional events had occurred independently in the three genera. Measures of allele crossover amongst the polyhaploids revealed that P. piloselloides is an autopolyploid species with tetrasomic inheritance. It was also noted that the dominant determinant of LOP in P. piloselloides could transmit via a diploid gamete (pollen or egg) but not via a haploid gamete. Using this information, a model is presented of how gametophytic apomixis may have evolved in several members of the Lactuceae, a tribe of the Asteraceae."
29 April 2024
Azizi H., Sheidai M., Mozaffarian V. & Noormohammadi Z. 2023: Molecular (ISSR, cp DNA, ITS) and morphological study of the genus Tragopogon L. (Asteraceae). – Genet. Resources Crop Evol. 70: 505–524.
Abstract
"Tragopogon is an Old World genus with 150 species. Mediterranean, Middle East, and Eastern Europe are the distribution centers of this genus. This genus has 26 species in Iran, of which 11 are endemic. The morphology studies of 32 species and Molecular studies (ISSR, ITS, cp DNA) of 22 species of the genus Tragopogon were investigated. Despite the anatomical and molecular studies done around the world, the exact classification of this genus is not clear due to the high number of secret species, hybridization, polyploidy, and rapid diversification. The purpose of these studies is to classify, determine interspecific relationship in this genus, and determine the important morphological characteristics in taxon differentiation. We conclude that sections of Rubriflori, Sosnowskya, Chromopappus, Majores, Angustissimi, and Krascheninnikovia introduced by the flora of Iranica are confirmed by our morphometry and molecular studies. Section of Profundisulcati in flora Iranica is confirmed based on morphometry data. The Species of T. jesdianus, T. porphyrocephalus, T. rezaiyensis, and T. Stroterocarpus in the flora of Iranica are not classified in any section which we classified in the Rubriflori section. Cp DNA dendrogram is not useful for classification in this genus and Chloroplast sequences are very similar among Tragopogon species. Therefore, the use of cp DNA markers in the classification of this genus is not recommended. The use of ISSR and ITS molecular markers are useful for classifying the genus Tragopogon."
29 April 2024
Şahin H., Demir S., Boğa M., Sarı A., Makbul S. & Gültepe M. 2023: Comparative phytochemical and bioactivity studies on two related Scorzonera L. species: A chemotaxonomic contribution. – Biochem. Syst. Ecol. 111(104743): 1–8.
Abstract
"Scorzonera L. (Asteraceae) is considered a taxonomically difficult genus with its more than 160 species. Scorzonera bella (SB) and S. veratrifolia (SV) species have been treated as synonyms since 1975. Recent botanical studies suggested the separation of the two taxa based on phenetic dissimilarities. Isolation, LC-MS/MS (including 53 phytochemicals as standard), and GC-MS (followed by library search) analyzes were conducted on the aerial parts of the plants to compare their phytochemical compositions and contribute to the classification of the two taxa. While flavonoid profile of SB was dominated by flavones, the majority of SV consisted of flavonols, among the analyzed standards. Nicotiflorin, the most abundant compound of SV, was the most notable difference which was not determined in SB. Kaempferol glycosides might be chemotaxonomic markers for the classification at subgenus levels. Caffeoylquinic acid esters were in common and similar amounts according to profiling and isolation results. Phytochemical compositions of nonpolar fractions of the plants differed significantly in phthalic acid esters, ursane, and hopane type triterpenoids which were only determined in SV. Phytochemical findings supported the separation of the two taxa. Antioxidant, anti-diabetic, anti-Alzheimer, and anti-hyperpigmentation potentials of the plants were evaluated in-vitro.
29 April 2024
Parkhomenko A. S., Kondratieva A. O., Bogoslov A. V., Shilova I. V. & Kashin A. S. 2023: Morphological variability in Chondrilla taxon populations in European Russia and adjacent territories. – Biol. Bull. 50: 2833–2845 [Russ. orig.: Povolzhskii Ekol. Zhurn. 2023(3): 331–351].
Abstract
"The morphological variability in populations of the taxa Chondrilla is poorly studied, and the features of its distribution, both spatially and between taxa, are not obvious. The results of our comparative analysis of the nature of this variability on the example of 28 populations of eight taxa of the genus in southeastern European Russia and northwestern Kazakhstan are presented. The variability of eight morphological traits, most of which are still used to determine plant species, was analyzed. It is shown that the variability level of these traits, four of which are taxonomically significant, in one year of monitoring is so wide that it completely overlaps the boundaries of their variability of all Eastern European taxa. At the same time, populations of different taxa growing side by side in similar environmental conditions demonstrated a very similar (just identical in some cases) range of morphological variability. It was concluded that the local conditions of population growth in a particular year of monitoring are most likely the causes of this very dynamic and peculiar variability of traits. Our comparative analysis of the interannual (2015, 2016, and 2022) variability of these quantitative traits in 14 populations of five Chondrilla taxa showed its significant dynamics over years as well. Using the method of nonmetric multidimensional scaling of quantitative morphometric parameters, it is shown that the gradient of their variability takes place from the conditions of minimum moisture and maximum temperature to the conditions of increasing humidity and decreasing temperature. At the same time, the combinations of these climatic factors in specific habitats of populations affect the values of the morphological parameters to a greater extent than their geographical gradients or taxonomic affiliation."
29 April 2024
Inceer H. 2023: Contribution to taxonomic knowledge of Crepis dioritica (Asteraceae): a threatened endemic species in Türkiye. – Orman Fakültesi Dergisi 23: 126–130.
Abstract
"Aim of study: Crepis dioritica Schott & Kotschy ex Boiss. (= Crepis albiflora Babcock) is a threatened endemic species in Türkiye. The aim of this study is to contribute taxonomic knowledge of this species, and to reasses of its IUCN Red List category.
Area of study: Bolkar Mountains (Niğde) and Irano-Turanian region.
Material and methods: The comprehensive floristic studies in type locality of C. dioritica in Bolkar Mountains were carried out. Besides, the specimens previously collected from the type locality and Irano-Turanian region of the species were examined in detail.
Main results: The typification of the name Crepis dioritica erronously cited as holotype was corrected to lectotype herein. Besides, the IUCN category of the species was reassesed as VU (vulnerable), and its distribution pattern was given in detail for the first time. "
29 April 2024
Akyalçin H. & Altan S. 2024: Palynology of taxa of Crepis L. genus growing in Çanakkale, Türkiye. – KSU J. Agric. Nat. 27(1): 82–91.
Abstract
"This study investigated the pollen morphology of the taxa belonging to the genus Crepis L. collected from various localities in Çanakkale in 2015. Wodehouse (1935) and Acetolysis (Erdtman, 1960) methods were used in the research. Pollen morphologies of 3 species and two subspecies belonging to the Crepis L. genus were defined according to light microscopy (LM) and scanning electron microscopy (SEM) examinations. In LM, pollens are monad, radially symmetrical and isopolar. Pollens are suboblate and oblate spheroidal, Amb shape is inter-hexagonal-subtriangular. The pollen of the genus is tricolporate. The view from the equator is circular and oval. In the examinations made with LM, the ornamentation is echinulophate. Pollen has 15 lacunae as 3 poral, 6 abporal, 6 paraboral. Ornamentation is echinulophate; the tectum surface is microperforate. SEM micrographs of C. smyrnaea and C. commutata pollen show depressions at the corners of the polar field. The collapses are located on the paraboral lacunae and are distinctly lacuna-like. As a result, in this study, palynological features of C. smyrnaea DC., C. micrantha Czerep., C. commutata (Spreng.), C. reuterana Boiss. & Heldr. subsp. reuterana taxa were studied for the first time. C. smyrnaea DC. ex Froel. was collected for the first time in Çanakkale within the scope of this study, according to the type records in Flora of Turkey."
21 March 2024
Crawford D. J., Kelly J. K. & Anderson G. J. 2024: Reproductive biology of Asteraceae on oceanic islands. – Bot. Rev. 90: 67–108.
Abstract
"Asteraceae are among the most abundant angiosperm families on oceanic islands. The reproductive biology of Asteraceae is reviewed and the attributes of the family contributing to their success on islands are discussed. Asteraceae are effective dispersers (the small, single-seeded fruits are moved great distances by wind and birds), and colonization is most likely limited by establishment. The pollinators of the colonizing ancestors rarely disperse with them to islands. Divorced from the pollinators of their ancestral habitats, the capitulum of aggregated small, shallow flowers typical of Asteraceae facilitates pollination of colonizers by various novel biotic visitors and by wind. Self-compatible (SC) colonizing ancestors are common, permitting establishment of sexual populations from one or few propagules. However, several large insular lineages of Asteraceae originated from functionally self-incompatible (SI) colonizers that may have also possessed the capacity to set some self-seed. Establishment may also be facilitated by dominance relationships among S-alleles in the sporophytic SI (SSI) system of Asteraceae, increasing cross-compatibility within small populations. Factors potentially promoting outcrossing in SC Asteraceae are: gynomonoecy, with temporal separation of receptive pistillate ray florets and pollen presentation in the hermaphroditic disc florets of a capitulum (interfloral protogyny); and intrafloral protandry where pollen presentation occurs before stigmata become receptive. Dioecy, gynodioecy, and monoecy are infrequent sexual systems in insular Asteraceae. Multiple paternity is similar in island composites to other Asteraceae, suggesting that neither compatible mates nor pollinators are typically limiting. Additional studies, particularly with genomic markers, are needed for more refined insights into mating systems and paternity in island Asteraceae as these results have important conservation implications."
21 March 2024
Efimov P. G. 2023: Taraxacum erythroboreale (Asteraceae), a new species of presumably intersectional hybrid nature with broad distribution in North European Russia (Taraxacum Notulae Rossiae Boreali Europeae II). – Novosti Sist. Vyssh. Rast. 54(e12): 1–11.
Abstract
"Taraxacum erythroboreale Efimov, a new apomictic species, is described and illustrated. It occurs in Russia (North of the European part), in the Murmansk and Vologda regions, in the Komi Republic, being locally very abundant. It occupies mainly dry sandy roadsides and other similar ruderal places, and seems benefiting from the anthropogenic disturbance of the land. The new species may belong either to the section Erythrosperma (H. Lindb.) Dahlst., or have originated from the hybridization between this section and some species of an Asiatic section like Stenoloba Kirschner et Štěpánek or Dissecta (Soest) R. Doll. The new species displays rather wide morphological polymorphism as to the presence/absence of purplish achene pigmentation, shape of outer phyllaries, corniculation of phyllaries, and in some other traits."
21 March 2024
Mateo Sanz G., Egido Mazuelas F. del & Gómiz García F. 2023: Aportaciones al conocimiento del género Hieracium l. en España, xxxvi. – Fl. Montiber. 85: 33–41.
Abstract
"Several new species of Hieracium L. (Compositae, Lacutuceae) are here described from Spain and for a second group new citations are provided."
18 March 2024
Xu L.-S., Song Z.-Q., Liao S.-Y. & Chen Y.-S. 2024: Qineryangia, a new genus from the Hengduan Mountains and new insights into the phylogeny of the subtribe Crepidinae (Cichorieae, Asteraceae). – J. Syst. Evol.
https://doi.org/10.1111/jse.13066.
Abstract
"The Crepidinae are the largest subtribe of the Cichorieae (Asteraceae). Debate remains over the circumscription and phylogeny of this subtribe, mainly due to its complex morphology and the poor phylogenetic signal provided by traditional Sanger sequencing markers. In this study, a well-resolved phylogeny of the subtribe Crepidinae, consisting of seven highly supported clades, was obtained for the first time using nuclear data with a phylogenomics approach (Hyb-Seq). Using this phylogeny along with other evidence, we propose a new taxonomic framework for the Crepidinae with seven lines and 29 genera, which merges subtribe Chondrillinae with the Crepidinae. We also describe a new monotypic genus, Qineryangia, that is characterized by broad involucres, loose imbricate phyllaries with wavy margins, and thick pappus bristles."
18 March 2024
Gültepe M., Makbul S., Güzel M. E., Türker Z. & Coşkunçelebi K. 2024: Tragopogon davutii-turanii: a new species of Tragopogon from Anatolia. – Nordic J. Bot. 2024: e04178.
Abstract
"A new salsify species, Tragopogon davutii-turanii, is described from Anatolia based on micro-/macro-morphological and molecular evidence. The new species is morphologically similar to T. vvedenskyi and T. abbreviatus, but differs from T. vvedenskyi mainly in ligule colour and from T. abbreviatus by achene characters and number of phyllaries. In contrast to morphological similarities, based on the phylogenetic tree obtained from nrDNA ITS sequences T. davutii-turanii is closely related to T. stenophyllus and T. coelesyriacus. Diagnostic characters, description, and conservation status of the new species, as well as micro- and macro-morphological features of its achenes and pollen grains, are provided."
18 March 2024
Xu J.-J., Wang Z.-H., Dong H.-J., Tian Q., Chen L. & Zhong Q.-Q. 2024: Melanoseris penghuana (Lactucinae, Cichorieae, Asteraceae), a new species from North-central Yunnan, China. – PhytoKeys 238: 1–10.
Abstract
"In this paper, we describe a new species, Melanoseris penghuana, from Mt. Jiaozi Xueshan located in North-central Yunnan, China. Despite its morphological similarities to M. likiangensis, M. penghuana exhibits distinct differences in leaf texture, shape of terminal lobes, indumentum of leaves, peduncles, and involucres, as well as the length of the achenes. Additionally, the conservation status of this species is classified as Vulnerable through data analysis from two field surveys."
18 March 2024
Uhlemann I. & Thiele K. 2024: On artificial F1-hybrids and backcrosses between Taraxacum koksaghyz and species of Taraxacum sect. Taraxacum (T. officinale s. l.) and their invasive potential. – Schlechtendalia 41: 1–16.
Abstract
"Taraxacum koksaghyz, a rubber producing plant grown in temperate regions, is used together with diploid Taraxacum linearisquameum (sexual T. officinale s. l.) or triploid species of T. sect. Taraxacum (agamospermous (micro-)species of T. officinale s. l.) as parental plants to get artificial rubber producing hybrids. T. koksaghyz × T. oblongatum and T. ‘Hybrid 207’ are extremely rare triploid offspring examples for 2×/3× combinations. The invasive potential of T. ‘Hybrid 207’ seems to be low, but interspecific competition with weeds is stronger than in T. koksaghyz which completely failed to compete against weeds. Artificial hybrids from 2×/2× combinations (T. koksaghyz × T. linearisquameum and reciprocal and backcrosses with parents) are diploid, generally have a morphological intermediate appearance between parents and partially produce rubber (0.1–3.7%). The fertility of achenes of offsprings depends on the parental function (pollen recipient or pollen donor). In case of T. linearisquameum as pollen recipient, fertility will be high (85–97%) and in case of T. koksaghyz as pollen recipient, fertility is low (1.5–9%)."
18 March 2024
Štěpánek J., Kirschner J. & Uhlemann I. 2023: A survey of the oreophytic species of Taraxacum in the Carpathians reveals a very limited overlap with the flora of the Alps. – Preslia 95: 475–591.
Abstract
"The genus Taraxacum in the subalpine and alpine areas in the Carpathians (Poland, Slovakia, Ukraine, Romania, montane habitats in Czechia) is revised using newly collected material and old herbarium collections. Four Taraxacum sections are recognized, viz. T. sect. Crocea (= T. sect. Fontana), T. sect. Alpina, T. sect. Rhodocarpa (= T. sect. Alpestria) and a newly described T. sect. Oreodoxa Štěpánek et Kirschner, a peculiar monotypic taxon with a single species, T. incredibile, confined to limestone ranges in northern Romania. There are 16 species in Slovakia, 7 in Poland, 5 in Ukraine and 11 in Romania; out of the 25 species adopted after the revision, 10 are newly described and 14 occur only in a single country. The study of the Taraxacum venustum group in the Carpathians revealed a new Romanian species, which is described, and another new species in the Western Alps, which in the present paper is compared with the similar Bulgarian species, T. humifusum of T. sect. Bulgarica. Taraxacum venustum sensu lato is reported from the Eastern Carpathians, but further study is needed. Three species known from the Carpathians, T. crocelliforme, T. pawlowskii and T. hercynicum, are also recorded in the Alps. Endemism of dandelions in the Carpathians is analysed and compared with published data for other Carpathian plants and the neighbouring regions. Twenty-one species (of 25) are confined to the Carpathians, 17 are endemic to a single Carpathian region and most of them to the Western Carpathians. The main literature sources of Taraxacum records from the Carpathians are analysed in detail; numerous published records of Alpine species in the Carpathians were rejected. The seven names published by R. Doll from Slovakia were thoroughly revised, with four names accepted and three synonymized. Five names are lectotypified."
18 March 2024
Rich T. C. G. & Warren J. K. 2023: Hieracium elizabethae-reginae (Asteraceae), a new English species of hawkweed named after Her Majesty Queen Elizabeth II. – Brit. Irish Bot. 5: 252-258.
Abstract
"Hieracium elizabethae-reginae sp. nov. is named in honour of Her Majesty Queen Elizabeth II. It is a member of Hieracium section Hieracium distinguished by its glaucous rosette leaves, partly-stylose capitula and the absence of simple hairs on the bracts. About 500 plants are known in two sites on calcareous grassland in Gloucestershire, England. It is IUCN Threat Category ‘Endangered’."
18 March 2024
Rastegar A., Ghaderi H., Maroofi H., Advay M., Jalili A. & Jamzad Z. 2023: The conservation status of Scorzonera nivalis, an endemic species of Iran. – J. Iran Nature 8(4): 135–140.
Abstract
"Scorzonera nivalis Boiss. & Hausskn. (Asteraceae) is one of the narrowest endemic species in Iran's flora, restricted to the Schahu and Avroman Mountains. IUCN criteria and GeoCAT data (EOO= 339.736 km2; AOO= 4.41 km2) classify this species as Critically Endangered (CR). This species was not collected after it was introduced 156 years ago by Boissier and Haussknecht until 2013 when it was collected for the second time from Schahu Mountain. Later studies conducted in Kurdistan Province added other populations from the Avroaman Mountains to the samples of this valuable species. The most efficient way to protect this species is to help its propagation through seeding and sowing in other similar habitats in the Schahu and Avroman Mountains. Introducing Schahu Mountain as a protected area by the Department of Environment of Iran, preventing livestock from entering the top of the mountain, collecting seeds, and storing them in the Natural Resources Gene Bank of Iran are other effective ways to protect this valuable reserve."
18 March 2024
Safavi S. R., Rad M. A., Jamzad Z. & Jalili A. 2023: The conservation status of Scorzonera alborzensis Safavi & Amini Rad, an endemic species from Iran. – J. Iran Nature 8(3): 107–112.
Abstract
"Scorzonera alborzensis is one of the exclusive and rare species collected and reported from only one place in the country (Mazandaran province: between Baladeh and Nour, Siahsang mountains, 3023 m). The genus Scorzonera L. belongs to the Asteraceae family and has 19 endemic species in Iran. Based on the guidelines of the International Union for Conservation of Nature (IUCN), Area of Occupancy (AOO), Extent of Occurrence (EOO), habitat quality, population size, and natural reproduction of the species were evaluated. According to the field studies, the area of occupancy (AOO) and extent of occurrence (EOO) were estimated at an area of 0.01 km2 (only one locality), and the number of adult individuals is between 15 and 20, with a very low regeneration rate. Therefore, according to our studies, Scorzonera alborzensis is defined as a Critically Endangered (CR) species. Road construction and grazing in this species' habitat are among the life-threatening factors. As a result, the Natural Resources and Watershed Organization needs to protect this species' habitat. Further, ex-situ conservation must be achieved by preserving seeds in the Natural Resources Seed Bank, growing seeds, and cultivating seedlings in Iran's National Botanical Garden."
18 March 2024
Safavi S. R. & Rad M. A. 2021: The conservation status of Scorzonera persica Boiss. & Buhse, an endemic species from Iran. – J. Iran Nature 6(5): 117–123.
Abstract
"The Scorzonera L. (Asteraceae) has 18 endemic species in Iran. S. persica Boiss. & Buhse is one of the endemic species and has only been collected and reported from three localities in the country. Based on the IUCN guidelines, different categories and criteria were used to evaluate the status of the species as follows: Area of Occupancy (AOO), Extent of Occurrence (EOO), quality of habitat, size of the population, and regeneration. According to the field studies, S. persica occupies an area of 0.6 km2. In the analysis of GeoCAT software, the extent of occurrence was 2720 Km2. Based on our results, the conservation status of S. persica is defined as Critically Endangered (CR). Construction operations and grazing in the habitat of this species are among the life-threatening factors of this species, so it seems necessary to protect this species by protecting its habitat."
24 January 2024
Gottschlich G., Feulner M. & Philipp C. 2023: Hieracium obscuratum subsp. balmense, eine neue Hieracium-Sippe aus dem Nationalpark Berchtesgaden (Bayern, Deutschland). – Ber. Bayer. Bot. Ges. 93: 160–164.
Abstract
"Hieracium obscuratum subsp. balmense, a new subspecies from Berchtesgaden National Park (Bavaria, Germany) is described and illustrated. A morphological comparison with other known subspecies is provided."
24 January 2024
Drenckhahn D., Gottschlich G. & Zonneveld B. 2023: Neubeschreibungen und 2C-Werte von Pilosella macranthela subsp. silvae-pici (Spessart-Mausohrhabichtskraut) und Pilosella ottonis (Otto-Mausohrhabichts-kraut) mit einer Übersicht über das Vorkommen von P. macranthela-Taxa in Bayern. – Forum Geobot. 11: 21–34.
Abstract
"A pentaploid taxon from the Pilosella macranthela group was discovered in Lower Franconia/Bavaria which is newly described here as P. macranthela subsp. sylvae-pici. It grows mainly in the Bavarian Bunter Spessart and occurs with three small, isolated stands also in the limestone area of the Main valley and Tauber area. Its habit of growth is intermediate between the furcata and laxicephala types of Pilosellae with epigeal and partly hypogeal stolons and a tendency to form clusters. The upper and lower surfaces of the rosette leaves have stellate hairs. The peduncles and the phyllaries are densely covered with dark glandular hairs with yellowish glandular heads. The lateral teeth of the ligules often are separated by incisions. A tetra- und pentaploid transitional taxon between P. macranthela subsp. sylvae-pici and P. officinarum is described as P. ottonis. P. ottonis is tetra- and pentaploid with up to 7 capitula. It is densely covered with dark stalk glands on phyllaries and resembles forms of P. acutifolia in habit. The phyllaries of P. ottonis are covered with numerous epidermal papillae with adiameter of about 10–20 μm and in this aspect resemble P. macranthela subsp. sylvae-pici and P. glomerata. However, in P. officinarum epidermal papillae are absent. Plants of genetically heterogeneous tetra- and heptaploid P. macranthela have been found outside the Spessart as spontaneous hybrids between P. glomerata and P. officinarum and also occur sporadically without P. glomerata in the vicinity."
23 January 2024
Uhlemann I. 2023: Taraxacum section Crocea (= Taraxacum section Fontana, Asteraceae, Crepidinae) in the European Alps. – Neilreichia 13/14: 195–226.
Abstract
"Taraxacum sect. Crocea (the correct name for the taxon formerly called T. sect. Fontana) comprises putative glacial relicts restricted to the European Alps, possibly the Carpathians (not recorded yet), and south-eastern European mountains. In this paper, six species of this section are recognised in the Alps: T. absurdum, T. fontanosquameum, T. fontanum, T. insubricum, T. jacobianum spec. nova and T. pseudoboreigenum. Four names are relegated to synonymy: T. cochleatophyllum, T. fontanicola, T. graiense and T. pseudofontanum. Further names formerly associated with T. sect. Crocea in the Alps are excluded, synonymisised with species from other sections or treated as nomina dubia or species incertae sedis: T. aestivum, T. aurantellum, T. binilobatum, T. corsicum, T. croceicarpum, T. crocellum, T. fontaniforme, T. magnopyramidophorum, T. malyi, T. obovatifolium, T. peralatum, T. pohlii, T. pomposum, T. renosense, T. rufocarpum, T. senile and T. silvicola. For each Alpidic T. sect. Crocea-species, a type is designated (where still necessary) and a detailed description, a comparison with relatives, a list of specimens studied by the author, information on distribution and ecology, and drawings and photographs of relevant characters are given. A determination key for all species of the section in the area under study is provided."
23 January 2024
Gottschlich G. 2023: Hieracium sadnigense, spec. nov., nebst Anmerkungen zur Hieracium-Sammlung des Salzburger Universitätsherbariums (SZU). – Neilreichia 13/14: 285–291.
Abstract
"Hieracium sadnigense ("lachenalii–picroides"), a new Hieracium species from the Sadnig Group, Carinthia, Austria, is described and illustrated. The species was detected while revising the Hieracium specimens in the Herbarium of the University of Salzburg (SZU). A survey of this collection, most of which was collected by the late Prof. Dr. Heinrich Wagner (1916–1993), is made."
5 January 2024
Sakkir S., Güzel M. E., Al Mansouri M. & Soora P. 2023: Contribution to the knowledge of Lactuca L. (Asteraceae) in the United Arab Emirates. – Biodiversity: Res. Conservation 71: 9–14.
Abstract
"We present new data on the distribution of Lactuca species and review the currently documented data on the genus in the United Arab Emirates (UAE). L. serriola L. is recorded for the first time from Abu Dhabi Emirate. L. dissecta D. Don, L. serriola, and L. orientalis (Boiss.) Boiss. were already reported from other emirates. Detailed morphological descriptions, types, distribution maps, and a key to Lactuca species in the UAE are included. We also highlight the deficiency of the documentation with herbarium specimens in the UAE."