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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26 November 2021
Gottschlich G. 2020: Hinweise zur Bestimmung außeralpischer Hieracium-Arten im blütenlosen Zustand [Notes on the identifiying of non-alpine Hieracium species basing on vegetative characters]. – Florist. Rundbriefe 54: 56-78.
Abstract
“By means of 38 photos of young plants hints are given to identify species of the genus Hieracium (Hieracium s. str. and Pilosella), mainly occurring in Germany, based on vegetative characters."
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31 August 2021
Shaw M. 2020: Hawkweeds of South-East England. – BSBI Handbook 20: i-iv, 1-250.
58 Hieracium taxa treated with keys, descriptions, illustrations and distribution maps.
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17 June 2021
Urfus T., Vít P., Urfusová R. & Krahulec F. 2020: Morphology mirrors ploidy and reproductive modes in Pilosella officinarum. – Preslia 92: 391–402.
Abstract
“Pilosella officinarum is represented predominantly by tetraploid (2n = 36), pentaploid (2n = 45) and hexaploid (2n = 54) cytotypes reproducing, to various degrees, both sexually and apomictically. Its current intraspecific taxonomical treatment is based mainly on selected apomictic lineages, the large number of which makes the treatment confusing and not generally applicable. We therefore tested the breeding modes of a representative set of plants from central Europe, cultivated under experimental conditions. Each ploidy level was associated with a different reproductive pattern (4x – sexual, 5x – prevalently apomictic and 6x – sexual and apomictic). Whereas sexual tetraploids occurred in the western part of the study area (the Czech Massif), apomictic pentaploids and hexaploids were scattered in its eastern part (Western Carpathians and Pannonia). Moreover, the hexaploid cytotype formed a distinct exclusively sexual group restricted to steep river canyons of the Czech Massif. Morphometric analyses were performed to determine the set of characters which distinguish major lineages characterized by different ploidy and reproductive modes. Their results confirm the existence of morphological differences between plants of different ploidy levels and, in the case of the hexaploid cytotype, different modes of breeding. Knowledge of ploidy and reproductive modes is therefore essential for elucidating the reticulate infraspecific structure of Pilosella officinarum."
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12 May 2021
Sochor M., Manning J. C., Šarhanová P., Herwijnene Z. van, Lebeda A. & Doležalová I. 2020: Lactuca dregeana DC. (Asteraceae: Chicorieae[sic]) a South African crop relative under threat from hybridization and climate change. – S Afr. J. Bot. 132: 146-154.
Abstract
“Lactuca dregeana DC. is a rare and poorly understood southern African endemic taxon currently known only from three localities in the Northern Cape. It is evidently closely related to Eurasian and north African L. serriola L. and cultivated L. sativa L., and has high potential for utilisation in lettuce breeding. However, only three accessions of that name, which have been used in several modern studies and whose identity are doubtful, are placed in the most important world gene banks. This study is the first one that utilizes molecular methods, genome size estimation and phenotyping in wild-collected material of L. dregeana to shed light on the origin and evolutionary history of the species. Genome size (mean ± standard deviation: 5.96 pg ± 0.03 pg) did not distinguish this species from its relatives. Restriction-site associated DNA sequencing (RADseq), microsatellite analysis and Sanger sequencing of the ITS region confirm that L. dregeana is a distinct taxon that has been derived from L. serriola approximately around the time of domestication of L. sativa. Causes of the trans-African geographical disjunction are hypothesized. Two hybrids of L. dregeana with L. serriola and one with L. sativa are identified, pointing to hybridization as a possible threat. The gene bank accessions of ‘L. dregeana’ are re-determined as primitive forms of L. sativa. Phenotypic analysis showed that position of involucral bracts, number of flowers per capitulum, shape of leaf lobes and cypsela beak length are diagnostic for determination of L. dregeana and its hybrids."
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10 May 2021
Schuchovski C., Meulia T., Sant’Anna-Santos B. F. & Fresnedo-Ramírez J. 2020: Inflorescence development and floral organogenesis in Taraxacum kok-saghyz. – Plants 9(10, 1258): 1-15.
Abstract
“Rubber dandelion (Taraxacum kok-saghyz Rodin; TK) has received attention for its natural rubber content as a strategic biomaterial, and a promising, sustainable, and renewable alternative to synthetic rubber from fossil carbon sources. Extensive research on the domestication and rubber content of TK has demonstrated TK’s potential in industrial applications as a relevant natural rubber and latex-producing alternative crop. However, many aspects of its biology have been neglected in published studies. For example, floral development is still poorly characterized. TK inflorescences were studied by scanning electron microscopy. Nine stages of early inflorescence development are proposed, and floral micromorphology is detailed. Individual flower primordia development starts at the periphery and proceeds centripetally in the newly-formed inflorescence meristem. Floral organogenesis begins in the outermost flowers of the capitulum, with corolla ring and androecium formation. Following, pappus primordium—forming a ring around the base of the corolla tube—and gynoecium are observed. The transition from vegetative to inflorescence meristem was observed 21 days after germination. This description of inflorescence and flower development in TK sheds light on the complex process of flowering, pollination, and reproduction. This study will be useful for genetics, breeding, systematics, and development of agronomical practices for this new rubber-producing crop."
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10 May 2021
Rewicz A., Marciniuk J. & Marciniuk P. 2020: Achene micromorphology and its taxonomic significance in some species in Taraxacum sect. Palustria (Asteraceae). – PhytoKeys 166: 1-28.
Abstract
“The genus Taraxacum is one of the largest and taxonomically most complicated apomictic genera. Currently, it is considered to consist of over 2800 species placed within 60 sections. Due to the large number of species, and their uniform morphological design and plasticity of leaves, the identification of plants at the species level is challenging even for specialists. This problem significantly hinders the study of their properties and the rational use of these valuable medicinal and nutritional plants. This paper presents the results of research on the morphology and micromorphology of achenes of 28 Taraxacum species of sect. Palustria and for comparison one species per section of: Erythrosperma, Naevosa, Piesis, and Taraxacum. The achenes were measured with a stereoscopic microscope and a biometric program, and micromorphological studies were performed by scanning electron microscopy. It has been shown that traits associated with achene morphology and micromorphology have a high diagnostic value, allowing us to distinguish sections as well as species within the sect. Palustria. Based on the examined achene features, a dichotomous key for determining the studied species was constructed."
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10 May 2021
Pegoraro L., Baker E. C., Aeschimann D., Balant M., Douzet R., Garnatje T., Guignard M. S., Leitch I. J., Leitch A. R., Palazzesi L., Theurillat J.-P., Hidalgo O. & Pellicer J. 2020: The correlation of phylogenetics, elevation and ploidy on the incidence of apomixis in Asteraceae in the European Alps. – Bot. J. Linn. Soc. 194: 397–409.
Abstract
“Asexual reproduction has often been regarded as an evolutionary dead end, but asexual lineages (most notably those that are apomictic) are present in several angiosperm families and often comprise a large number of taxa, both widespread and endemic. Investigating correlations between genetic, environmental and taxonomic factors and the incidence of apomixis has represented a challenge for many years, with previous analyses frequently omitting one or more of these variables. Here, flow cytometric seed screening, cytological data and ecological variables have been integrated in a phylogenetic framework to create a comprehensive dataset for 229 of Asteraceae from the European Alps. Data were analysed using phylogenetically informed generalized linear mixed models (pMCMCglmm) where elevation, ploidy and phenology were assessed for their potential correlation with asexual reproduction and apomixis type. Although apomixis is not dominant among the species studied, our results confirm that an odd ploidy (e.g. 3x) and, to a lesser extent, an even polyploid level (i.e. 4x) significantly increase its probability, most probably due to chromosome misalignments during meiosis. The distribution of apomictic species does not correlate with elevation, and there is a weak correlation between early flowering initiation and aposporous apomixis. Although current and future changes in climate may severely impact the survival of the flora of the European Alps, asexual reproduction and polyploidization may prove to be, at least temporarily, lifelines for the survival of a species under the novel climatic conditions. Therefore, uncovering how apomicts and polyploids evolve and persist will be essential for understanding the ecology of the European Alps and hence informing future conservation strategies." [Hieraciinae, Taraxacum]
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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."
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1 December 2020
Cho M.-S., Kim S.-H., Yang JiY., Crawford D. J., Stuessy T. F., López-Sepúlveda P. & Kim S.-C. 2020: Plastid phylogenomics of Dendroseris (Cichorieae; Asteraceae): insights into structural organization and molecular evolution of an endemic lineage from the Juan Fernández Islands. – Frontiers Pl. Sci. 11: 594272.
Abstract
“Dendroseris D. Don comprises 11 species endemic to the Juan Fernández islands in Chile. They demonstrate spectacular and unusual growth forms of rosette trees with extremely variable morphology and occupy wide ecological ranges on the islands. These unique plants are now highly threatened with extinction with very small population sizes, typically consisting of 10 or fewer individuals in wild. Despite morphological and ecological divergence among species of Dendroseris, their monophyly has been supported in previous studies, but with little resolution among subgeneric groups. We assembled seven complete plastome sequences from seven species of Dendroseris, including representatives from three subgenera, and carried out comparative phylogenomic analyses. The plastomes are highly conserved in gene content and order, with size ranging from 152,199 to 152,619 bp and containing 130 genes (87 coding genes, 6 rRNA genes, and 37 tRNA genes). Plastid phylogenomic analyses based on both the complete plastome sequences and 81 concatenated coding genes only show Dendroseris nested within Sonchus sensu lato, and also that inter-subgeneric relationships are fully resolved. Subg. Phoenicoseris is resolved as sister to the remaining species of the genus and a sister relationship between the two subgenera Dendroseris and Rea. Ten mutation hotspots from LSC and SSC regions and variable SSRs are identified as potential chloroplast markers for future phylogenetic and phylogeographic studies of Sonchus and related groups."
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4 November 2020
Uhlemann I., Travnicek B. & Zila V. 2020: Notizen zur Taraxacum-Flora Österreichs und Südtirols, III. – Neilreichia 11: 101-131.
Abstract
“Records of 16 species of Taraxacum sect. Taraxacum (syn. Ruderalia) for Austria are presented, 12 of which are new for Austria: T. aequilobum, T. altissimum, T. bellum, T. cordatum, T. exsertiforme, T horridifrons, T. ingens, T. laticordatum, T. pannucium, T. sertatum, T. uncidentatum, T. urbicola. Taraxacum alatum is new for Burgenland, Lower Austria, East Tyrol, Salzburg and Styria; T. interveniens is new for Burgenland, Lower Austria and Upper Austria; T. oxyrhinum is new for Carinthia, Lower Austria, Upper Austria and Styria; T. quadrangulum is new for Carinthia, Lower Austria, Upper Austria, East Tyrol and Styria."
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4 November 2020
Bartolucci F., Conti F. & Galasso G. 2020: (2747) Proposal to conserve the name Tragopogon hirsutus (Gelasia hirsuta, Scorzonera hirsuta) (Asteraceae) with a conserved type. – Taxon 69: 618–619.
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18 September 2020
Kirschner J., Štěpánek J., Klimeš L., Dvorský M., Brůna J., Macek M. & Kopecký M. 2020: The Taraxacum Flora of Ladakh, with notes on the adjacent regions of the West Himalaya. – Phytotaxa 457: 1-409.
Abstract
“Ladakh (Jammu & Kashmir State, NW. India) is a region in the Trans-Himalaya between the Great Himalayan Range in the south and the eastern Karakoram in the north, at the southwestern edge of the Tibetan Plateau. Its flora, vegetation, ecology and climatic conditions were thoroughly studied by the late Leoš Klimeš. As regards the genus Taraxacum (Compositae-Crepidinae), Ladakh was an almost unexplored area. L. Klimeš accumulated an ample material (50 Ladakh species are exclusively based on his material), either as field samples or as cultivated specimens; together with further recent collections of other collectors, cultivated by JK & JŠ, and the historical herbarium material, it forms a basis for the present monograph. It presents a taxonomic treatment of all Taraxacum species documented from Ladakh, including notes on ecology and distribution, and notes on dandelions from adjacent regions, mainly Gilgit-Baltistan, Spiti, Lahaul and the cis-Himalayan Kashmir. Each species is characterized by a full description, photographs of involucre, capitulum and achenes, whenever available; species are arranged systematically in sections, the latter also with descriptions and identification keys including all the taxa from Ladakh and adjacent areas. Treatments of five sections include all or almost all of their members. Distribution maps and a complete list of specimens studied are given for all Ladakh dandelions. A comprehensive introduction in the vegetation of Ladakh, general features of the genus Taraxacum and the history of its exploration are also provided. As regards the Taraxacum diversity, the broader region covered by the present monograph includes representatives of one third of the world sectional diversity. One hundred and twenty one taxa, belonging to 19 sections, are given a full treatment in the monograph, including those from adjacent regions (the latter, 46 species, also with full descriptions and illustrations); the Ladakh proper harbours 76 taxa in 17 sections, one of which is described as new. Fifty one taxa are described as new for science, 42 from Ladakh, 9 from other regions. For all species, the mode of reproduction is given (mostly inferred from indirect indicators). Only seven species were found at least partly sexual (five of them outside the limits of the Ladakh proper); all the other taxa exhibit agamospermy. Ladakh and adjacent regions of Pakistan and India rank among the regions with the highest sectional and morphological Taraxacum diversities."
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25 August 2020
Behçet L. & Yapar Y. 2020: Lactuca anatolica (Asteraceae: Lactucinae), a new species from eastern Anatolia (Turkey). – Phytotaxa 455: 287-294.
Abstract
“Lactuca anatolica is described as a new species from the province of Bingöl, and is known from only one locality. Its diagnostic characters are discussed, and taxonomic comments are presented. Lactuca anatolica is similar to L. leucoclada, L. orientalis subsp. nuristanica and L. orientalis subsp. orientalis but differs from these species in achenes, indumentum and leaves. Its achenes were investigated using scanning electron microscopy (SEM). Data on ecology and IUCN conservation status of the new species are also presented. A distribution map of the new and related species is provided."
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8 July 2020
Dudáš M., Šuvada R., Majeský Ľ. & Vašut R. J. 2020: Taraxacum sect. Erythrosperma in Slovakia. Part II. Notes on distribution and ecology of Taraxacum danubium. – Thaiszia 30: 81-92.
Abstract
“Taraxacum danubium is xerothermic species of Taraxacum sect. Erythrosperma occurring in Central Europe with the highest frequency in southeastern Czechia, northeastern Austria and southwestern Slovakia. Since its description in 1970 from Devínska Kobyla Hills in Slovakia the species was documented from numerous localities across the country, however overall study on the species distribution in Slovakia was still lacking. Thus in this paper, we present a detailed survey on its chorology in Slovakia based on our long-term field observation and data excerption from herbarium specimens with commentary on the distribution (over 60 localities in Slovakia) and biology of the species. Western Slovakia seems to be a centre of its distribution, while towards east the number of populations rapidly decreases. Karyology and ecology are discussed. The full list of locations and distribution map are presented."
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8 July 2020
Richards A. J. 2020: Taraxacum section Erythrosperma. – In: Rich T. C. G. & Jermy A. C. (ed.), Plant crib, ed. 3. – London: Botanical Society of the British Isles. Available at https://bsbi.org/plant-crib, accessed July 2020
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8 July 2020
Richards A. J. 2020: Taraxacum section Naevosa. – In: Rich T. C. G. & Jermy A. C. (ed.), Plant crib, ed. 3. – London: Botanical Society of the British Isles. Available at https://bsbi.org/plant-crib, accessed July 2020.
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8 July 2020
Rich T. C. G. 2020: Hieracium lanceolatum (Asteraceae) does not occur in Britain. – Brit. & Irish Bot. 2: 133-143.
Abstract
“The status of Hieracium lanceolatum Vill. in Britain has been reviewed against the original descriptions and material from the western Alps. British plants named as H. lanceolatum show a poor match with H. lanceolatum and fit H. prenanthoides Vill. better. It is concluded that H. lanceolatum does not occur in Britain."
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8 July 2020
Rich T. C. G. 2020: The current status of the rare Scottish endemic Hieracium drummondii Drummond’s hawkweed (Asteraceae). – Brit. & Irish Bot. 2: 127-132.
Abstract
“The records of Hieracium drummondii Pugsley, Drummond’s hawkweed, (Asteraceae) are reviewed. It has been recorded from eight general localities and it not accepted in four others. Seven of the eight localities have been visited but only one population of 20-25 plants was found at Crinan. It is IUCN Threat Category ‘Critically Endangered’ and is on the verge of extinction."
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8 July 2020
Day J. J. & Richards A. J. 2020: Taraxacum pseudomarklundii, a south-western European species, native in South Devon (v.c.3). – Brit. & Irish Bot. 2: 73-76.
Abstract
“An enigmatic dandelion first collected in the UK in 2014 from a lanebank on Dartmoor (v.c.3) has been determined as Taraxacum pseudomarklandii (Soest), previously only known from north-west Spain and south-west France, an unusual biogeographic alliance in our Taraxacum-flora. It is triploid (2n = 24). This taxon has now been confirmed from several locations in South Devon and one site in Ireland (Meath, v.c.H22)."
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8 July 2020
Rich T. C. G. 2020: Lectotypification and neotypification of some names in British Hieracium section Foliosa (Asteraceae). – Brit. & Irish Bot. 2: 69-72.
Abstract
“Types are designated for 11 names in Hieracium section Foliosa (Fr.) Arv.-Touv. (Asteraceae). Lectotypes are designated for Hieracium aestivum subsp. subumbellatiforme Zahn, Hieracium corymbosum Fr. var. pycnotrichum W. R. Linton, Hieracium crocatum Fr. var. maritimum F. Hanb., Hieracium latobrigorum forma angustifolium Pugsley, Hieracium obesifolium Pugsley, Hieracium pseudamplidentatum var. stenophyllum Pugsley, Hieracium rigidum var. tavense Ley, Hieracium strictum var. amplidentatum F. Hanb. and Hieracium strictum var. subcrocatum E. F. Linton. Neotypes are designated for Hieracium inuloides subsp. strictiforme Zahn and Hieracium neocorymbosum var. crocatiforme Pugsley."
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8 July 2020
McCosh D. J., Barlow D., Burrow B. & Rich T. C. G. 2020: Three new species of Hieracium (Asteraceae) from northern England. – Brit. & Irish Bot. 2: 56-63.
Abstract
“Three new species of hawkweed are described in Hieracium section Stelligera from Northern England, based on the herbarium collection of Vincent Jones; Hieracium lacinifolium V. Jones, Hieracium obovatifolium V. Jones and Hieracium pseudosubcyaneum V. Jones."
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23 June 2020
Qiu J., Zhang J.-W., Gao T.-G. & Tan D.-Y. 2020: Crepis desertorum (Asteraceae, Cichorieae), a new species from northern Xinjiang (China) based on morphological and molecular data. – Pl. Diversity 42: 74–82.
Abstract
“Crepis desertorum from the Junggar Basin of northern Xinjiang, northwestern China, is described as a new species. Molecular studies indicate that the species is closely related to Crepis frigida. Morphological studies indicate that it is similar to Crepis sancta subsp. bifida but differs from the latter taxon in having glandular hairs on the stem, a flat receptacle and dimorphic achenes. Chromosome features and pollen and achene ultrastructure also are described for the new species."
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14 June 2020
Marciniuk J., Marciniuk P. & Wolanin M. M. 2020: [New records of Taraxacum from Ukraine] in Nobis M. & al., Contribution to the flora of Asian and European countries: new national and regional vascular plant records, 9. – Turk. J. Bot. 44, https://dx.doi.org/10.3906/bot-1908-41
Abstract
“The paper presents new records for ... Taraxacum acervatulum, T. aequilobum, T. amplum, T. ancistrolobum, T. bellicum, T. collarispinulosum, T. copidophyllum, T. corynodes,T. dentatum, T. gelertii, T. infuscatum, T. ingens, T. lucidum, T. paucilobum, T. plumbeum, T. portentosum, T. sinuatum, T. subhuelphersianum, T. telmatophilum, T. undulatiforme and T. undulatum (Asteraceae) from Ukraine ..."
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14 June 2020
Coşkunçelebı K., Gültepe M., Güzel M. E. & Makbul S. 2020: Tragopogon abbreviatus (Asteraceae): a little-known species inferred from morphological and molecular analysis. – Turk. J. Bot. 44: 269-280.
Abstract
“Tragopogon porrifolius occurs in Turkey with 3 taxonomically confused subspecies: T. porrifolius subsp. eriospermus, T. porrifolius subsp. longirostris, and T. porrifolius subsp. abbreviatus. In the present paper, T. porrifolius subsp. abbreviatus endemic to Turkey is raised at specific level based on morphological and molecular analysis. After detailed assessment of original herbarium specimens and literature studies, we found that this name is not typified yet. Thus, a lectotype is provided together with an emended diagnosis; synonym, distribution map, and conservation status for the first time. Additionally, a preliminary phylogenetic position of this little-known taxon is given on several newly sequenced data.”
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2 June 2020
Gottschlich G. 2020: Anmerkungen zur Nomenklatur von Hieracium kalksburgense Wiesb. und Wiedereinsetzung des Namens Hieracium canum Peter. – Kochia 13: 17–21.
Abstract
“The type material of Hieracium kalksburgense is heterogeneous and does not fit with the taxonomical amplitude hitherto ascribed to this intermediate species. According to the intention of Wíesbaur as author the name H. kalksburgense is lectotypífied with a specimen, belonging to H. acutifolium, and thereby synonymized. As a consequence, the name H. canum Peter is re-established for the intermediate species „cymosum < pilosella" and lectotypífied. As there exists no valid name in the alternative genus concept under Pilosella, a new combination is provided.”
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10 April 2020
Szeląg Z. 2020: Hieracium richianum (Asteraceae), a new species of H. sect. Alpina from the Eastern Carpathians in Romania. – Phytotaxa 436: 93-96.
Abstract
“Hieracium richianum, a new, apomictic, tetraploid (x = 9) species is described from the Ciucaș Mountains, Eastern Carpathians, Romania. It belongs to the H. fritzei aggregate comprising taxa of presumably hybrid origin between H. alpinum and H. prenanthoides. The new species is illustrated with photos of the holotype and living plants.”
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7 April 2020
Bartolucci F., Galasso G. & Conti F. 2020: Nomenclatural novelties and typification of names in Scorzonera sensu lato (Asteraceae, Cichorieae) for the Italian vascular flora. – Phytotaxa 437: 279-290.
Abstract
“According to recent molecular study, the genus Scorzonera sensu lato is polyphyletic. A revised circumscription of this genus was proposed with the recognition of seven genera: Scorzonera sensu stricto, Gelasia, Lipschitzia, Pseudopodospermum, Pterachaenia, Ramaliella, and Takhtajaniantha. Accordingly, a taxonomic treatment of the genus Scorzonera sensu lato for the Italian vascular flora is presented. Nomenclatural types for six names are designated here: Scorzonera calcitrapifolia var. decumbens, S. columnae, S. deliciosa, S. neapolitana, S. trachysperma var. undulata, and S. villosa. Furthermore, the following new combinations are proposed: Gelasia villosa subsp. columnae, Pseudopodospermum hispanicum subsp. asphodeloides, P. hispanicum subsp. neapolitanum, and P. undulatum subsp. deliciosum.”
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12 March 2020
Wang Z.-H., Kilian N., Chen Y.-P. & Peng H. 2020: Sinoseris (Crepidinae, Cichorieae, Asteraceae), a new genus of three species endemic to China, one of them new to science. – Willdenowia 50: 91–110.
Abstract
“Studies to elucidate the systematic position of two Chinese species described originally as Lactuca hirsuta and L. scandens, of which only historical specimens from the late 19th and early 20th centuries were known, revealed the occurrence of three different species. Molecular phylogenetic analysis of these species based on sequences of the nuclear ribosomal internal transcribed spacer (nrITS) region and three plastid DNA markers (trnL-F, psbA-trnH, matK) uncovered a hitherto unknown lineage in a first comprehensive phylogenetic backbone of the subtribe Crepidinae (Asteraceae, tribe Cichorieae). Substantiated by comparative morphological studies, this lineage is described as a new genus, named Sinoseris, endemic to the Chinese provinces Sichuan and Yunnan. One of its three species is new to science, while another is conspecific with both L. hirsuta and L. scandens. The third was meanwhile described by other authors as Nabalus muliensis and is now transferred to Sinoseris.”
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12 March 2020
Hatami E., Mirtadzadini M., Bordbar F. & Jones K. E. 2020: Delimitation of Iranian species of Scorzonera subg. Podospermum and S. subg. Pseudopodospermum (Asteraceae, Cichorieae) based on morphological and molecular data. – Willdenowia 50: 39–63.
Abstract
“Scorzonera L. is represented by 57 species in Iran including three subgenera: S. subg. Scorzonera, S. subg. Podospermum and S. subg. Pseudopodospermum. Species of S. subg. Podospermum and S. subg. Pseudopodospermum in Iran are morphologically similar, which limits species delimitation. In order to clarify intersubgeneric and interspecific delimitation in Iran, we carried out extensive sampling of the two subgenera in Iran. We conducted phylogenetic analyses based on the nuclear Internal Transcribed Spacer (nrITS), detailed morphological studies, and we evaluated the systematic value of achene features. Our results showed that Scorzonera s.l. is polyphyletic, and both S. subg. Podospermum and S. subg. Pseudopodospermum are monophyletic. The monophyly of S. subg. Podospermum morphologically corresponds to a combination of characters containing pinnatifid leaves, phyllaries with black corniculate projections, and the presence of a swollen carpopodium on the achenes. A comparison of the topology observed in the nrITS phylogeny with achene features indicates that a sculptured achene wall surface in members of S. subg. Pseudopodospermum provides a synapomorphy for this lineage. This study supports a broader circumscription of S. subg. Pseudopodospermum with the addition of S. calyculata (S. sect. Incisae), S. ovata, S. papposa and S. paradoxa (S. sect. Papposae). Finally, we provide a taxonomic treatment, including an identification key and species diagnoses and distributions, with nomenclature of Iranian species.”
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12 March 2020
Szeląg Z. & Vladimirov V. 2020: Pilosella bulgarica (Asteraceae) a new hybridogenous species from Bulgaria. – Phytotaxa 428: 290–294.
Abstract
“The newly described Pilosella bulgarica combines the morphological features of P. pavichii and P. rhodopea, and grows in the subalpine habitats in the Kurudere gorge in the Triglav massif, Central Stara Planina Mountains, Bulgaria. It is illustrated with photos of the holotype (kept at SOM) and living plants in the locus classicus.”
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15 January 2020
Gottschlich G. 2020: Synopse der für Deutschland nachgewiesenen Arten und Unterarten der Gattung Hieracium s.l. (Hieracium s. str. und Pilosella), aufgeschlüsselt nach Vorkommen in den einzelnen Bundesländern / Synopsis of all species and subspecies of the genus Hieracium s. l. (Hieracium s. str. and Pilosella) in Germany according to the records cited in literature for the German federal states. – Forum Geobot. 9: 1–59.
Abstract
“A list of 205 collective species and 1563 subspecies of the genus Hieracium s. l. detected for Germany and its federal states, is provided. As the most infraspecific taxa were described under Hieracium s.l. and to avoid too much invalid names under Pilosella in the list, a separation of Hieracium and Pilosella is remained undone. By coloured marking additional informations are given whether a subspecies is originally described from a German federal state or its name has a syntype from Germany”
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9 January 2020
Zaika M. A., Kilian N., Jones K., Krinitsina A. A., Nilova M. V., Speranskaya A. S. & Sukhorukov A. P. 2020: Scorzonera sensu lato (Asteraceae, Cichorieae) – taxonomic reassessment in the light of new molecular phylogenetic and carpological analyses. – PhytoKeys 137: 1-85.
Abstract
“Scorzonera comprises 180–190 species and belongs to the subtribe Scorzonerinae. Its circumscription has long been the subject of debate and available molecular phylogenetic analyses affirmed the polyphyly of Scorzonera in its wide sense. We provide a re-evaluation of Scorzonera and other related genera, based on carpological (including anatomical) and extended molecular phylogenetic analyses. We present, for the first time, a comprehensive sampling, including Scorzonera in its widest sense and all other genera recognised in the Scorzonerinae. We conducted phylogenetic analyses using Maximum Parsimony, Maximum Likelihood and Bayesian analyses, based on sequences of the nuclear ribosomal ITS and of two plastid markers (partial rbcL and matK) and Maximum Parsimony for reconstructing the carpological character states at ancestral nodes. Achene characters, especially related to pericarp anatomy, such as general topography of the tissue types, disposition of the mechanical tissue and direction of its fibres, presence or absence of air cavities, provide, in certain cases, support for the phylogenetic lineages revealed. Confirming the polyphyly of Scorzonera, we propose a revised classification of the subtribe, accepting the genera Scorzonera (including four major clades: Scorzonera s. str., S. purpurea, S. albicaulis and Podospermum), Gelasia, Lipschitzia gen. nov. (for the Scorzonera divaricata clade), Pseudopodospermum, Pterachaenia (also including Scorzonera codringtonii), Ramaliella gen. nov. (for the S. polyclada clade) and Takhtajaniantha. A key to the revised genera and a characterisation of the genera and major clades are provided.”
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