New Literature

Literature Archive: 2018 | 2019 | 2020 | 2021 | 2022

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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9 May 2022

Hidalgo O., Balant M. & Pellicer J. 2022: Urospermum ×siljakii (Asteraceae), a new natural homoploid hybrid between U. dalechampii and U. picroides. Phytotaxa 544: 220-222.

Abstract
n/a

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6 May 2022

Güzel M. E., Kilian N., Sennikov A. N., Coşkunçelebi K., Makbul S. & Gültepe M. 2022: Caucasoseris, a new genus of subtribe Chondrillinae (Asteraceae: Cichorieae) for the enigmatic Prenanthes abietina. – Willdenowia 52: 103–115.

Abstract
A new genus, Caucasoseris, is established to accommodate Prenanthes abietina, a species of hitherto uncertain systematic position distributed in the western Caucasus and northeasternmost Turkey in montane conifer and mixed forests. Agreement has existed that the species belongs somewhere in the Crepidinae or Lactucinae but its morphological features do not match any genus and previous molecular phylogenetic analyses could not establish its sister group. This study provides additional micro- and macromorphological, palynological and anatomical data, and used a molecular phylogenetic sampling designed to ascertain its relationship. A sister group relationship with the Chondrillinae is inferred from the phylogenetic tree based on nrITS. In the plastid DNA tree, where the Chondrillinae are resolved as a clade nested inside the Crepidinae, the species is resolved further remote from the Chondrillinae clade and in a rather early diverging position of the Crepidinae. In agreement also with the anatomical and micro- and macromorphological findings, it is considered an orphan lineage with affinities to the Chondrillinae, best treated as a genus of its own. A key to the genera of the Chondrillinae including Caucasoseris is provided."

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29 March 2022

Štěpánek J. & Kirschner J. 2022: Taraxacum sect. Erythrocarpa in Europe in the Alps and eastwards: A revision of a precursor group of relicts. – Phytotaxa 536: 7-52.

Abstract
A taxonomic revision of Taraxacum sect. Erythrocarpa in the eastern part of Europe and in the Alps is presented. Seventeen species are recognized, nine of them are described as new. Most species occupy relatively restricted geographical ranges, the most characteristic habitats being limestone cliffs and mountain summit areas. The highest species diversity of this section is situated in the mountain ranges of Greece and the adjacent regions of Bulgaria and North Macedonia; only two species are known from the Alps, and a new species is described also from Crimea, Ukraine. Taraxacum pindicola is the only sexual diploid among the taxa studied, the other taxa exhibit agamospermy. The name T. pindicola is newly lectotypified. The northernmost representative of T. sect. Erythrocarpa, T. pieninicum (S. Poland), is conspecific with T. erythrocarpum of the western Slovakia. The names T. albomarginatum A.J. Richards and T. voricola A.J. Richards are later synonyms of T. olympophilum Sonck. Taraxacum sect. Erythrocarpa is characterized and, for each species, nomenclature, typification, a detailed description or a reference to it, diagnostic notes, distribution and habitat, and a list of herbarium specimens studied are given. Most species are illustrated, and for selected ones, distribution maps are provided."

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29 March 2022

Güzel M. E. 2022: A new subgenus of Sonchus (Asteraceae: Cichorieae) inferred from molecular data. – Phytotaxa 531: 211-229.

Abstract
A new subgenus, Sonchus subg. Palustres, is established to accommodate S. erzincanicus endemic to Turkey and former Sonchus ser. Palustres including S. palustris and S. sosnowskyi. Although the exclusive placement of S. palustris has already been documented by previous studies based on molecular phylogenetic analyses without morphological evidence, there has not been any study of S. erzincanicus above the specific level. The present study proposes a new subgenus based on chiefly molecular data, and contribute macro- and micro-morphological features (i.e. pollen grains and achenes) of the studied species together with the phylogenetic position based on nrITS and matK with multiple sampling. Further literature and morphological studies evidently showed that S. erzincanicus and S. palustris have slightly heteromorphic achenes which is a subtle character and underestimated up to now in the infrageneric classification of the genus Sonchus. Besides, the molecular analyses revealed that S. erzincanicus and S. palustris are sister taxa, forming an exclusive clade of their own within the genus. Moreover, the Palustres clade is the first diverged one among the clades of the genus Sonchus based on the nrITS
data. Consequently, S. erzincanicus, S. palustris and S. sosnowskyi are treated as members of the suggested new subgenus. Therefore, the slightly heteromorphic achene feature could be taken into consideration for species delimitation in the genus Sonchus as a supportive morphological character. Furthermore, S. araraticus is suggested as a synonym of S. erzincanicus based on its morphological and ecological characteristics."

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29 March 2022

Szeląg Z. 2022: Hieracium boratynskii (Asteraceae), a new species in the H. canescens aggregate from the Sudetes in Poland. – Phytotaxa 541: 209-212.

Abstract
n/a

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29 March 2022

Gottschlich G. & Villa M. 2022: Hieracium racemosum subsp. spinidentatum (Asteraceae), a new hawkweed from Lombardy, Italy. – Phytotaxa 521: 78-82.

Abstract
A new hawkweed endemic to Northern Italy, Hieracium racemosum subsp. spinidentatum, is described and illustrated. Information on its morphology, distribution, ecology and taxonomic relationship is provided."

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29 March 2022

Iamonico D., Fortini P. & Di Pietro R. 2022: Epitypification of the Linnaean name Crepis bursifolia (Asteraceae). – Taxon 71: 207-209.

Abstract
The epitypification of the Linnaean name Crepis bursifolia is discussed. An illustration from Boccone's Museo di piante rare della Sicilia, Malta, Corsica, Italia, Piemonte, e Germania was correctly designated as lectotype by Jiménez López & al. in 2013 according to Art. 7.11 of the ICN. However, this image lacks some of the important characters required for a critical identification of the species (i.e., hairiness of receptacle, length of achenes, number of ribs on the achene surface, and presence of a distinct apical beak on the achene). Following Art. 9.9 of the ICN, an epitype deposited at HFLA is selected to serve as an interpretative type of the lectotype of C. bursifolia."

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29 March 2022

Wei, Z., Chu R., Luan M., Lu Z.-W., Ma Y.-G., Luo X.-R., Lu Y., Xu X.-M. & Zhu S.-X. 2022: Morphology and micro-morphology of achenes and their taxonomic implications to Lactuca species (Cichorieae; Asteraceae). – Taiwania 67: 171-180.

Abstract
Lactuca L. is the central genus of Lactucinae (Cichorieae; Asteraceae), containing cultivated lettuce and its wild relatives. In this study, we used Scanning Electron Microscope, Plain Stereo Microscope and Automated Digital Microscope to observe, record and discuss the achene characters and surface micro-features of Lactuca (including taxa of ex-Pterocypsela Shih) and Notoseris Shih species. The taxon sampling consisted of fifteen globally distributed Lactuca species and Chinese originated Notoseris species. The results indicated that the morphological and micro-morphological features of achenes were of great importance to identify Lactuca species at the genus and species level. We conclude that two key features, the presence or absence of beak and the arrangement and shape of epidermal cells, can be used to distinguish Lactuca from Notoseris. The shape and margin of the achene body, the beak length and the number of ribs on either side of achene are key features to classify Lactuca species. The ornamentation of epidermal cells can also provide extra evidence to determine closely related Lactuca species. The interspecific relationships among the Lactuca species based on achene features are consistent with the results of previously molecular systematics of these species."

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22 February 2022

Badalamenti N., Sottile F. & Bruno M. 2022: Ethnobotany, phytochemistry, biological, and nutritional properties of genus Crepis—a review. – Plants 11(4, 519): 1–28.

Abstract
The genus Crepis L., included within the Asteraceae family, has a very wide distribution, expanding throughout the northern hemisphere, including Europe, northern Africa, and temperate Asia. This genus has a fundamental value from biodynamic and ecological perspectives, with the different species often being chosen for soil conservation, for environmental sustainability, and for their attraction towards pollinating species. Furthermore, various species of Crepis have been used in the popular medicine of several countries as medicinal herbs and food since ancient times. In most cases, the species is consumed either in the form of a decoction, or as a salad, and is used for its cardiovascular properties, as a digestive, for problems related to sight, for the treatment of diabetes, and for joint diseases. This literature review, the first one of the Crepis genus, includes publications with the word ‘Crepis’, and considers the single metabolites identified, characterised, and tested to evaluate their biological potential. The various isolated compounds, including in most cases sesquiterpenes and flavonoids, were obtained by extracting the roots and aerial parts of the different species. The secondary metabolites, extracted using traditional (solvent extraction, column chromatography, preparative thin layer chromatography, preparative HPLC, vacuum liquid chromatography), and modern systems such as ultrasounds, microwaves, etc., and characterised by mono- and bi- dimensional NMR experiments and by HPLC-MS, have a varied application spectrum at a biological level, with antimicrobial, antioxidant, antidiabetic, antitumor, antiviral, antiulcer, phytotoxic, and nutritional properties having been reported. Unfortunately, in vitro tests have not always been accompanied by in vivo tests, and this is the major critical aspect that emerges from the study of the scientific aspects related to this genus. Therefore, extensive investigations are necessary to evaluate the real capacity of the different species used in food, and above all to discover what the different plants that have never been analysed could offer at a scientific level."

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14 February 2022

Richards A. J. 2021: Field handbook to British and Irish dandelions. – BSBI Handbook 23.

From the BSBI website:
The Field Handbook to British and Irish Dandelions [published in mid-October 2021] is a completely revised edition [original edition from 1997] including new Taraxacum species described over the last 24 years, updated taxonomy and nomenclature, new keys, updated BSBI distribution maps and identification notes. ...The Handbook includes a general introduction, guidance on identification, keys, accounts of the 239 species with revised descriptions, 3-6 colour images per taxon, showing key features with a distribution map, and references, a glossary and an index. The book is B5 in size, 302+vi pages, soft back and has full colour throughout."

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14 February 2022

Hatami E. & Mirtadzadini M. 2022: Notes on the identity of Scorzonera picridioides and Scorzonera paradoxa (Asteraceae). – Feddes Repert. 10.1002/fedr.202100044

Abstract
Due to confusion in the identity of Scorzonera paradoxa and Scorzonera picridioides and their inconsistent taxonomic treatments in previous literature and regional floras, we performed a detailed bibliographic and morphological revision of both species in order to elucidate their taxonomic identities. Examination of specimens in the field or various herbaria and critical surveys of type specimens and previous literature represented that S. paradoxa and S. papposa possessed a considerable overlap in the morphology and geographic distribution, and consequently, S. paradoxa was confirmed as a synonym of S. papposa. We also found that S. papposa and S. paradoxa were morphologically different from S. picridioides in plant height, shape of basal leaves, color of florets, color of anther tube, and pappus bristles, thus, S. picridioides was re-established as an independent species. In accordance with a recent taxonomic revision of subtribe Scorzonerinae that split Scorzonera s. l. into independent genera and placed S. papposa in genus Pseudopodospermum, we proposed the placement of S. picridioides in Pseudopodospermum, and provided an updated morphological description and geographic distribution notes for Pseudopodospermum papposum and Pseudopodospermum picridioides."

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28 January 2022

Krahulcová A. & Krahulec F. 2021: Cytotype variation and clonal diversity in polyploid apomictic populations of Pilosella (Compositeae, Cichorieae) introduced to southern Patagonia. – Bol. Soc. Argentina Bot. 56: 307-326.

Abstract
Introduction and objectives: The members of the genus Pilosella are native in Europe and Asia, but they are successful invasive species on most continents. These species form an agamic complex with common apomixis. Apomictic species hybridize, they have different degree of residual sexuality. Main aim of this paper was to determine if the interspecific hybridization already occurred in Patagonia.

M&M: This study is based on analysis of seed progeny collected at thirteen populations of Pilosella in southern Argentina and Chile. The plants were examined for their taxonomic identity, DNA ploidy level (using flow cytometry), chromosome number, reproduction, formation of parthenogenetic seeds and clonal identity (using isozyme phenotypes).

Results: No mixed-species population was recorded. Two apomictic clones of P. officinarum (one pentaploid and the other hexaploid) were found in populations: eight were hexaploid and one was mixed in cytotype composition. A new species for Patagonia, the apomictic pentaploid P. caespitosa, was represented by plants from two populations in Argentina. Some of the progeny plants cultivated from seeds sampled at three localities represented seed-fertile aneuploids the morphology of which implied a hybrid origin and indicated P. officinarum as one of the parents. 

Conclusions: The presence of seed-fertile, aneuploid and parthenogenetic hybrids among the cultivated plants signifies an increased risk of the formation of new hybridogeneous genotypes of Pilosella in southern Patagonia."

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28 January 2022

Pellicer J., Balant M., Fernández P., Rodríguez González R. & Hidalgo O. 2022: Morphological and genome-wide evidence of homoploid hybridisation in Urospermum (Asteraceae). – Plants 11(2,182): 1–15

Abstract
The genus Urospermum is distributed in the Mediterranean region and Macaronesia, and has been introduced to other extra-Mediterranean regions. Although the two species constituting the genus, U. dalechampii and U. picroides, are frequently found together, hybrids have so far only been reported once, from Morocco. However, we found certain individuals in Catalonia, whose intermediate morphology suggested a potential hybrid origin. In this study, we applied morphological and molecular methods to investigate the origin of those individuals. Intermediate features at phenotype, karyological, cytogenetic, and genomic levels were identified in morphologically intermediate individuals, supporting their homoploid hybrid origin. Chloroplast sequence data suggest that U. dalechampii is the maternal progenitor of the hybrid. Together with the intermediate traits displayed, the lack of fertile seeds suggests that hybrids are probably F1. Future monitoring studies will be, nonetheless, needed to evaluate the extent of hybridisation and its potential impact on the biology of the genus."

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28 January 2022

Lu Y.-F, Xu Y.-L., Xie W.-Y., Zhang H.-W., Zheng Z.-H., Cai X. & Jin X.-F. 2021: Two new species and a new combination from Zhejiang, East China. – PhytoKeys 184: 111–126.

Abstract
As the supplement of the flora of Zhejiang, East China, two new species were described with illustrations. Cerastium huadingense Y.F.Lu, W.Y.Xie & X.F.Jin (Caryophyllaceae) differs from C. qingliangfengicum in having sterile stems absent, leaves sessile, petals slightly longer than sepals, and stamens slightly shorter than sepals. Ixeridium dimorphifolium Y.L.Xu, Y.F.Lu & X.Cai (Asteraceae) differs from I. beauverdianum in having plant stoloniferous, basal leaves dimorphic, involucre 8‒10 mm long, inner phyllaries 8, and florets 7‒10. Paraphlomis setulosa C.Y.Wu & H.W.Li (Lamiaceae) was reviewed and morphological characters of the corolla and stamens of its type and the specimens collected in the field survey were critically examined. With barbate anthers and strongly divergent anther cells, Paraphlomis setulosa was transferred to Sinopogonanthera, and S. setulosa (C.Y.Wu & H.W.Li) H.W.Zhang & X.F.Jin was consequently combined."

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21 January 2022

Jiménez J. F., Ramírez-Rodríguez R., Melendo-Luque M., Suárez-Santiago V. N. & Sánchez-Gómez P. 2021: Genetic diversity and structure of the narrow endemic species Crepis granatensis: implications for conservation. – Pl. Biosystems https://doi.org/10.1080/11263504.2021.2013336.

Abstract
In this study, we studied the genetic diversity and population genetic structure of the endangered endemic Crepis granatensis, using amplified fragments length polymorphism (AFLP) and plastid DNA (cpDNA). No genetic divergences were obtained using cpDNA markers. Three primers combinations selected from a total of 12 produced a total of 421 fragments, of which 418 (99.3%) were polymorphic. The total genetic diversity of C. granatensis was moderate (Ht = 0.260). Neís gene diversity ranged from 0.202 to 0.258. The fixation index (Fst) was 0.137, suggesting low to moderate genetic differentiation among populations. The AMOVA analysis revealed that genetic diversity was mainly concentrated among individuals within populations (74%), while 8% was found among populations and 18% among regions. The Bayesian analysis and PCoA identified two genetic clusters: one corresponded to La Sagra population and the other corresponded to the Mágina populations. Based on our genetic results, it is necessary to preserve the evolutionary potential of C. granatensis by protecting all extant populations. Both in situ and ex-situ conservation measures should be considered. Reinforcement, reintroduction, and translocation programmes could be performed if necessary. Finally, such conservation strategies should be considered both in the current recovery plan and management actions for the species."

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21 January 2022

Hind N., Moore R. & King C. 2022: Launaea cervicornis. Compositae. – Curtis's Bot. Mag. 1011.

Abstract
Launaea cervicornis (Boiss.) Font Quer & Rothm. (Compositae: Lactuceae: Hyoseridinae) is illustrated and described. The species is endemic to the Balearics, and is the dominant species in the limestone cliff-top plant association Launaeion cervicornis (O. Bolòs & Vigo ex Y. Gil & Llorens) Rivas-Martínez, Fernández-González & Loidi) on the islands. Notes on cultivation, propagation, pests and diseases and availability are provided. The position of Launaea Cass. in the tribe Lactuceae (= Cichorieae) subtribe Hyoseridinae Less. is discussed, as is the position of the species within the genus, as the sole taxon in Launaea sect. Cervicornes N. Kilian. The reproductive biology of the species is discussed. The species exhibits a particularly short flowering time (per floret) and flowering period, maximizing on calm periods and an abundance of flower visitors/pollinators. The plant possesses three different dispersal mechanisms – anemochory (for solitary achenes), and atelechory and barochory for mature, unopened involucres. The former ensuring there is some movement away from the parent plant, and the latter two effectively ensuring that propagules are not instantly blown off the cliffs into the sea."

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7 January 2022

Woellner R., Bräuchler C., Kollmann J. & Wagner T. C. 2021: Biological flora of Central Europe: Chondrilla chondrilloides (Ard.) H. Karst. – Perspectives Pl Ecol. Evol. Syst. 54, 125657: 1-20.

Abstract
Chondrilla chondrilloides (Asteraceae) is a rare and endangered early-successional plant species endemic to the Eastern European Alps. Its distribution is restricted to near-natural braided rivers and to alluvial fans. The species was common along Alpine gravel rivers, but has declined markedly due to river regulation and degradation in the 19th and 20th century, while some recent restoration projects benefit the plant. Its population declines were caused by habitat fragmentation and destruction as a consequence of extensive hydro-engineering. This paper summarises the published material on taxonomy, morphology, habitat requirements and distribution of the species. The review is complemented by own research data and a phylogenetic assessment of extant and extinct populations within the infrageneric context. A summary on location, size and structure of the remaining populations in the north-eastern and south-eastern Alps is combined with data on seed germination and the habitat niche of the species, with a particular focus on differences between northern and southern populations. Chondrilla chondrilloides forms meta-populations on consolidated gravel bars and older terraces, with extinction and recolonisation due to floodplain dynamics; small populations quickly recover from few founder individuals. Populations in the southern parts of the species’ range are larger with bigger plants and more reproduction, while germination is very high in all populations. Thus, C. chondrilloides has characteristics that allow it to respond rapidly to degradation and restoration of its habitats along gravel rivers in the Eastern Alps."