New Literature

Literature Archive: 2017 | 2018 | 2019 | 2020 | 2021

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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12 March 2021

Kirschner J., Gürdal B., Štěpánek J. & Zeisek V. 2021: Taraxacum mirabile, an enigmatic sexual halophilous endemic dandelion, represents a new section. – Phytotaxa 489: 49-64.

Abstract
Taraxacum mirabile Wagenitz (Asteraceae, Cichorieae, Crepidinae), a remarkable but taxonomically unexplored endemic species of Central Anatolia, is examined in detail. It is shown to be a sexually reproducing diploid (2n=16) species. It used to be included in Taraxacum sect. Orientalia in the literature. However, the nrDNA analysis revealed that T. mirabile is remote from that section. Moreover, it exhibits a number of unique features, such as fleshy leaves with a white, cartilaginous apex, long, dense, bright white tomentum at the plant base, multiple root heads, achenes with an extremely short conical cone and with very few minute spinules, a very narrow involucre with imbricate outer phyllaries, and white, not numerous florets. The most specific feature of T. mirabile is the fine, microscopic sculpture of achene surface, consisting of hair-like protuberances, not known in other Taraxacum species. These attributes, together with the convincing result of the nrDNA analysis, qualify T. mirabile to be recognized as a member of a separate section, T. sect. Echinulata, sect. nov. The habitat and distribution of T. mirabile are described, and the character of its endemism is discussed."

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12 March 2021

Pedro M. de, Riba M., González‐Martínez S. C., Seoane P., Bautista R., Claros M. G. & Mayol M. 2021: Demography, genetic diversity and expansion load in the colonizing species Leontodon longirostris (Asteraceae) throughout its native range. – Molec. Ecol. 30: 1190-1205.

Abstract
“Unravelling the evolutionary processes underlying range expansions is fundamental to understand the distribution of organisms, as well as to predict their future responses to environmental change. Predictions for range expansions include a loss of genetic diversity and an accumulation of deleterious alleles along the expansion axis, which can decrease fitness at the range‐front (expansion load). In plants, empirical studies supporting expansion load are scarce, and its effects remain to be tested outside a few model species. Leontodon longirostris is a colonizing Asteraceae with a widespread distribution in the Western Mediterranean, providing a particularly interesting system to gain insight into the factors that can enhance or mitigate expansion load. In this study, we produced a first genome draft for the species, covering 418 Mbp (~53% of the genome). Although incomplete, this draft was suitable to design a targeted sequencing of ~1.5 Mbp in 238 L. longirostris plants from 21 populations distributed along putative colonization routes in the Iberian Peninsula. Inferred demographic history supports a range expansion from southern Iberia around 40,000 years ago, reaching northern Iberia around 25,000 years ago. The expansion was accompanied by a loss of genetic diversity and a significant increase in the proportion of putatively deleterious mutations. However, levels of expansion load in L. longirostris were smaller than those found in other plant species, which can be explained, at least partially, by its high dispersal ability, the self‐incompatible mating system, and the fact that the expansion occurred along a strong environmental cline."

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14 January 2021

Güzel M. E., Coşkunçelebi K., Kilian N., Makbul S. & Gültepe M. 2021: Phylogeny and systematics of the Lactucinae (Asteraceae) focusing on their SW Asian centre of diversity. – Pl. Syst. Evol. 307, 7: 1-14.

Abstract
“This study provides the first comprehensive molecular phylogenetic reconstruction of the lettuce alliance (Cichorieae subtribe Lactucinae of the sunflower family) in its SW Asia centre of diversity and assumed area of origin. The sampling contains multiple samples of all SW Asian Lactucinae except four unavailable rare taxa. One nuclear ribosomal and five plastid DNA markers were used for the reconstruction with maximum parsimony, maximum likelihood and Bayesian inference. A total of 716 individual sequences belonging to 56 taxa were newly generated. The nrDNA and plastid DNA gene trees show several hard topological incongruences at various levels of the trees, which make it very likely that the evolution of the subtribe was shaped by events of ancient and more recent reticulation, chloroplast capture and incomplete lineage sorting. The taxonomic conclusions from the phylogenetic analysis are drawn, and a revised inventory of the subtribe in SW Asia including new combinations and synonymies are provided."

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14 January 2021

Chen Y.-S., Xu l.-S., Ke R., Harris A. & Li H.-M. 2021: Lihengia: A new genus of Asteraceae distinct from Dubyaea. – Taxon, https://doi.org/10.1002/tax.12428

Abstract
“A new genus, Lihengia, is established for two species presently treated within Dubyaea, which is proved to be paraphyletic in the present study, even after exclusion of Lihengia. Dubyaea is a genus of about 15 species endemic to the Sino‐Himalayan region that are treated within subtribe Crepidinae of tribe Cichorieae within Asteraceae. Stebbins suggested that Dubyaea may contain species representing direct ancestors of several widerspread genera in tribe Cichorieae, thus making phylogenetic reconstruction challenging. We tested the monophyly of Dubyaea using a molecular phylogeny reconstructed from ITS and five plastid fragment sequences (petD, psbA‐trnH, 5′trnL(UAA)trnF, rpl32‐trnL(UAG), trnQ(UUG)‐5′rps16) and sampling comprising Dubyaea and related species within the tribe Cichorieae. We resolved Dubyaea species within at least two separate clades of tribe Cichorieae. Most species of Dubyaea occurred in subtribe Crepidinae, while Dubyaea sect. Amoena was placed in subtribe Lactucinae. Based on our findings, we erect Lihengia as a new genus to accommodate the species of D. sect. Amoena, and, consequently, we propose two new combinations. We discuss the morphological and cytological support for the new genus."

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13 January 2021

Gottschlich G. & Brandstätter G. 2021: On the identity of Hieracium garibaldianum (Asteraceae). – Phytotaxa 479: 250–256.

Abstract
“The rediscovery of Hieracium garibaldianum in the Napoli region (Italy) where its type was originally collected, allowed us to compare it with a drawing of the holotype which was made by Fries. As a result, H. garibaldianum is placed in the synonymy of H. racemosum subsp. crinitum."

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6 January 2021

Gottschlich G. 2020: Ergebnisse von Herbar-, Feld- und Literaturstudien zur Gattung Hieracium s. l. (Hieracium s. str. und Pilosella) als Vorarbeiten für die „Neue Flora von Bayern“. – Ber. Bayer. Bot. Ges. 90: 129–146.

Abstract
“Preliminary results of studies of herbarium material, field work and literature concerning the account of Hieracium s.l. (Hieracium s.str. and Pilosella) for the „Flora of Bayern project“ are presented. The results are related to new taxonomical positions, nomenclatural changes, validations of names, changes in author designations as well as new records or cancellations of records for Bavaria and the description of a new subspecies (Hieracium onosmoides subsp. alcmanae)."

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6 January 2021

Gottschlich G. 2020: Revision des Herbarmaterials der Gattung Hieracium s. l. (Hieracium s. str. & Pilosella, Asteraceae) im Übersee-Museum Bremen (BREM). – Abh. Naturwiss. Vereins Bremen 47: 785–807.

Abstract
“In the years from 2012 to 2018 nearly 2400 Hieracium specimens in the herbarium of the Übersee-Museum in Bremen (BREM) were revised. They belong to 238 species (161 species to subgenus Hieracium, 77 species to subgenus Pilosella). The collection is rich in exsiccatae. Lists of species, collectors, exsiccates, and of the geographical origin are provided. The chronological origin of the collections is disaggregated and imbedded into the historical context. The Hieracium-collection includes 79 type specimens, most of them (70) belonging as syntypes to exsiccatae. The names of 7 taxa, among them 5 of specimens collected in Albania, are lectotypified. Two new combinations are made: H. glabratum subsp. acrovillosum (Nägeli & Peter) Gottschl. and H. hypochoeroides subsp. medelingense (Wiesb. ex Dichtl) Gottschl."

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6 January 2021

Safavi S. R. & Amini Rad M. 2020: Scorzonera alborzensis, a new species of subgen. Scorzonera sect. Nervosae (Asteraceae) from Iran. – Iran. J. Bot. 26: 93–99.

Abstract
“A new species of Scorzonera (subgen. Scorzonera sect. Nervosae Lipsch.) is described and illustrated. Scorzonera alborzensis Safavi & Amini Rad collected from Siah Sang mountain in Central Alborz. It is related to the Scorzonera cinerea Boiss., in which it can be distinguished by the stems form and size, leaves size and arrangement, involucral bracts size, and achene size. An illustration and a scanned image of the type specimen of the new species are provided."