Jun 14th, 2007
New Literature
Literature Archive: 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013
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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4 June 2013
Caldarella O., Lorenzo G. & Gottschlich G. 2013: Hieracium busambarense, a new species of the sect. Grovesiana (Asteraceae) from Sicily (Italy). – Pl. Biosyst. xx: xxx–xxx.
Abstract:
“Hieracium busambarense (Asteraceae), a new species from calcareous-dolomite cliffs of Rocca Busambra (western Sicily, Italy) is described and illustrated here.”
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23 May 2013
Hartman Y., Hooftman D. A. P., Schranz M. E. & Tienderen P. H. van 2013: QTL analysis reveals the genetic architecture of domestication traits in Crisphead lettuce. – Genet. Resources Crop Evol. 60: 1487–1500.
Abstract:
“The genetic architecture of crop domestication is generally characterized by three trends: relatively few genomic regions with major QTL effects are involved, QTL are often clustered, and alleles derived from the crop do not always contribute to the crop phenotype. We have investigated the genetic architecture of lettuce using a recombinant inbred line population from a cross between a crop Lactuca sativa (‘Salinas’) and its wild relative L. serriola. Few genomic regions with major QTL, plus various intermediate QTL, largely control the transition from wild to cultivated Crisphead lettuce. Allelic effects of all major QTL were in the expected direction, but there were intermediate QTL where the crop contributed to the wild phenotype and vice versa. We found two main regions with clusters of QTL, one on linkage group 3, where the crop allele induced lower seed output, another on linkage group 7, where the crop allele caused a delay in flowering time. Potentially, knowledge of genetic changes due to the domestication could be relevant for the chance that a transgene inserted in a crop genome will spread to wild relatives due to hitchhiking effects. If a transgene would be inserted in one of these regions, background selection on the crop alleles may lead to a reduced fitness of hybrids with the transgene. QTL research on the effects of domestication genes can thus indicate regions in the crop genome that are less likely to introgress, although these still need to be verified under field conditions.”
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23 May 2013
Savadkoohi F., Nejadsattari T., Assadi M., Jafari E. & Mehregan I. 2012: Application of achene morphology in systematics of some Iranian Taraxacum (Asteraceae tribe Cichorieae) species. – Iran. J. Bot. 18: 249–261.
Abstract:
“Achene micro-morphology of 17 species of Taraxacum (Asteraceae) is investigated using Scanning Electron Microscopy (SEM). In this study 12 qualitative and quantitative characters such as achene length, width and colour, ornamentation type and size, length of beak, length and colour of pappus were examined. Cluster Analysis (CA) and Principal Component Analysis (PCA) of data showed that micromorphology of achene has significant role in separating species from each other and it does support the delimitation at sectional level. Our results showed that ornamentation on achene body cannot be used in separation of taxa at species level as well as sectional rank, whereas ornamentation size showed to be a better tool for separation of species. Since fruit micromorphology provides some evidences for delimitation of species and sections, the results then were compared with the phylogenetic trees obtained from Maximum Parsimony (MP) and the Bayesian analysis (BA) of the nrDNA ITS region. Our results showed that current taxonomic system of the genus Taraxacum is not compatible with its phylogeny.”
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16 May 2013
Evgeny V. Mavrodiev E. V., Krahulec F., Soltis D. E. & Soltis P. S. 2013: A cryptic taxon rather than a hybrid species of Tragopogon (Asteraceae) from the Czech Republic. – Kew Bull. 68: 133–141.
Abstract:
“Tragopogon ×mirabilis Rouy is described as a diploid hybrid between T. porrifolius and T. pratensis. A population of T. ×mirabilis from Central Bohemia, Czech Republic, was recently investigated and, unlike previous reports of T. ×mirabilis, was found to be highly fertile. This fertile diploid hybrid population was considered to represent an alternative evolutionary pathway to polyploidy in Tragopogon. To determine the parentage of the plants from Bohemia, we investigated 12 samples of T. ×mirabilis with ITS, ETS, LFY and plastid (rpL16 gene, intron 1, tRNA-Leu (trnL) gene, intron, trnL-trnF intergenic spacer, psbA-trnH intergenic spacer, and trnG-trnT intergenic spacer) sequence data. None of the Bohemian plants have sequences that are consistent with a hybrid origin between T. porrifolius (incl. T. australis) and T. pratensis. Our data suggest that this fertile population of “T. ×mirabilis” may represent an unrecognised diploid species from the Angustissimi clade sensu Mavrodiev et al. (Int. J. Pl. Sci. 164: 1 – 19, 2005), a clade with a centre of distribution in the Caucasus, and hybrids of this unknown species with T. orientalis or T. hayekii (= T. orientalis L. var. hayekii Soó), a species closely related to T. pratensis and native to Bohemia. The Bohemian population of “Tragopogon ×mirabilis” clearly requires more investigation, but based on our data it does not appear to represent T. porrifolius × T. pratensis.”————————————————————————————————————————–
16 May 2013
Scott W. & Rich T. C. G. 2013: Taraxacum palmeri, a new species of section Spectabilia from the North Atlantic (Asteraceae). – New J. Bot. 3: 15–20.
Abstract:
“A new species of Taraxacum section Spectabilia is described from Shetland and the Faeroe Islands. Taraxacum palmeri Walter Scott & T.C.G. Rich is characterised by the 2-lobed or sometimes ±unlobed leaves with sparse, pale brown spots and few teeth, the leaf lobes strongly convex on the distal margins, the oblong-lanceolate outer bracts with ciliate distal margins, the large, deep yellow capitula, the pale to dark greyish-purple striped ligules, and sparse pollen.”
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2 May 2013
Fehrer J. 2012: Das Abenteuer Habichtskräuter: Molekularbiologische Untersuchungen in der Oberlausitz und angrenzenden Gebieten / The hawkweed adventure: Molecular investigations in the Oberlausitz and adjacent areas. – Ber. Naturf. Ges. Oberlausitz 20: 43–50.
Abstract:
“Hawkweeds of genus Pilosella Vaill. are characterized by a combination of sexual and asexual (apomictic) reproduction and abundant hybridization. These features greatly hamper the analysis of their population structure as well as the taxonomic delimitation if the species. Species belonging to two morphological series from the Oberlausitz, the Erzgebirge, the Jizerské hory, and the Krkonjoše were analyzed for their clonal structure and maternal inheritance by multilocus DNA fingerprinting and chloroplast DNA. The analyses of the clonal structure of apomictic species contributed to solving some taxonomic problems. The number and geographic distribution of the clones showed that most species had multiple origins and that they originated at different times and with different frequency. Contrary to expectations, in many cases, the apomict involved in a particular cross represented the maternal parent of the natural hybrid instead of the sexual partner. Experimental crosses showed that these apomicts exhibit an enormous variability with respect to reproductive modes and that in natural populations, the proportions of progeny that originated from sexual reproduction is much larger than previously assumed.”
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12 April 2013
Ensing D. J., Moffat C. E. & Pither J. 2013: Taxonomic identification errors generate misleading ecological niche model predictions of an invasive hawkweed. – Botany 91: 137–147.
Abstract:
“Ecological niche models (ENMs) have been proposed and applied as tools for predicting the extent of exotic species invasion risk and for identifying areas at risk of invasion. Despite the acknowledged concern of relying on occurrence records of variable and (or) unknown quality, the effect of taxonomically uncertain occurrence records on ENMs has not been investigated. We first present a schematic model describing how taxonomic uncertainty could yield varying predictions of invasion potential depending on the spatial characteristics of all versus “reliable” occurrence records. We then explore the issue in more detail by way of a case study on the morphologically and taxonomically difficult yellowdevil hawkweed (Pilosella glomerata (Froel.) Fr.), which is invasive in North America. We compared the climate niche properties and ENM predictions of invasion risk by P. glomerata in North America among models based on (i) all available occurrence records and (ii) records that are taxonomically “reliable”. “Total” records yielded niche properties that were significantly more heterogeneous than reliable records, and consequently, the potential invasion range of P. glomerata based on total records was predicted to be substantially larger. Our results provide rare empirical evidence that vetting occurrence records for taxonomic reliability is of critical importance for niche modeling.”
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11 April 2013
Šingliarová B., Šuvada R. & Mráz P. 2013: Allopatric distribution, ecology and conservation status of the Pilosella alpicola group (Asteraceae). – Nordic J. Bot. 31: 122–128.
Abstract:
“The Pilosella alpicola group comprises four morphologically distinct and geographically vicariant alpine taxa. We performed a thorough herbarium revision and literature survey to infer their distributional pattern(s). Pilosella alpicola s.s. occurs in the Alps in two disjunct areas: the Swiss Valais Alps and the Italian Dolomites. Historical records come also from the Austrian Alps (Gurktaler Alps and Hohe Tauern) and from one site from the Alpes Maritimes (Col de Larche), but the localities have not been recently confirmed. Pilosella rhodopea, a Balkan subendemic taxon, is quite widespread in Bulgaria (Stara planina Mts, Rila Mts and Pirin Mts), but is more rare in Albania, Greece and Macedonia. Interestingly, this species has also been recorded at two isolated sites in the Romanian southern Carpathians (the Căpăţînii and Cozia Mts). This occurrence underlines the floristic affinities of this part of the Carpathians to the Balkan flora. Only two localities of P. serbica, based on voucher specimens, have been recorded so far; Kopaonik Mts in Serbia and the Prokletije Mts in Montenegro. The records from other ranges are related to P. rhodopea. Pilosella ullepitschii, the detailed distribution of which has already been published, is a Carpathian endemic with its core area of distribution in the western Carpathians (Slovakia and Poland). Three isolated localities are also known in the eastern Carpathians (Nemira Mts) and one locality in the southern Carpathians (Bucegi Mts). The possible causes of disjunctions between and within species ranges are briefly discussed. Based on the distributional data, population sizes and ecology, we evaluate the conservation status of the P. alpicola taxa and propose their inclusion in national Red Lists.”
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10 April 2013
Jeanmonod D. & Schlüssel A. (with assist. of Chapalay I.) 2012: Compléments au Prodrome de la Flore Corse, Asteraceae III: Cichorieae (sauf Taraxacum, Hieracium et Pilosella). – Genève: Projet Flore corse, Conservatoire et Jardin botaniques; ISBN 978-2-8277-0818-5; 306 pp, 94 sw. fig.
Comprehensively treating close to 60 species of 25 genera.
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10 April 2013
Gottschlich G. 2013: Hieracium fallax – Verabschiedung eines vertrauten Namens [Hieracium fallax – discharge of a familiar name]. – Kochia 7: 25–43.
Abstract:
“During the 19th century the taxonomical circumscription and interpretation of H. fallax was very unclear and inconsistent. Especially since the monograph of Nägeli & Peter (1885) it has undergone a strong transformation which no longer concurs with the description in Willdenow (1809) and the type material in B. This paper outlines the history of this change of meaning. In consideration of the splitting of Hieracium s.l. in Hieracium s.str. and Pilosella, a change of the name and a new combination into Pilosella cymosiformis is necessary. Lectotypification of H. cymosiforme, H. fallax and P. setigera are made.”
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2 April 2013
Štěpánek J. & Kirschner J. 2013: A taxonomic revision of Taraxacum sect. Erythrosperma (Compositae-Lactuceae) in Corsica. – Feddes Repertorium 123: 139–176.
Abstract:
“Taraxacum sect. Erythrosperma (H. Lindb.) Dahlst. in Corsica was revised on the basis of a detailed study of old collections used by J. L. van Soest in his first studies of the genus in Corsica, and new collections and cultivations. All the names based on the specimens from Corsica are interpreted, 16 species of the section are recognized. Particular attention was paid to a group of the sect. Erythrosperma with a number of endemics or subendemics, around T. purpureomarginatum. Four new species are described. A number of names are newly interpreted and typified. All the specimens studied are cited, with the exception of taxa common in Europe. All the species of the sect. Erythrosperma known from Corsica are agamospermous; ten species proved to be triploid or tetraploid. All the taxa endemic to, or having a substantial part of their distribution range in Corsica are given full description.”
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22 March 2013
Brandstätter G. 2012: Hieracium symphytaceum subsp. pseudoleiopsis (Murr) Gottschl. & Brandst., comb. nov., neu für Kärnten und Salzburg sowie weitere bemerkenswerte Funde aus den Gattungen Hieracium und Pilosella in Österreich [Hieracium symphytaceum subsp. pseudoleiopsis (Murr) Gottschl. & Brandst., comb. nov., new for Carinthia and Salzburg and further remarkable records of the genera Hieracium and Pilosella in Austria]. – Stapfia Reports 97: 36–46.
Abstract:
“In addition to the new combination of Hieracium symphytaceum subsp. pseudoleiopsis, which is new for the flora of Carinthia and Salzburg, remarkable records of the following hawkweed species in Austria are presented and discussed: Hieracium adenophyton, H. carinthiostiriacum, H. obscuraturn, H. praecurrens, H. pseudalpinum, H. xanthoprasinophyes and Pilosella tendina. From those Hieracium obscuratum and H. pseudalpinum are new for the flora of Carinthia and Hieracium xanthoprasinophyes is new for the flora of Salzburg and Vorarlberg. The distribution of Hieracium praecurrens in Austria and the currently known distribution of Hieracium xanthoprasinophyes as well as those of H. symphytaceum subspecies elocatum and subspecies pseudoleiopsis are shown in grid-maps. In case of Hieracium adenophyton the current systematical interpretation is discussed. This discussion results in the proposal of reclassifying it as an intermediate spccies of H. dolichaetum and H. bocconei. Some of the records presented under H. praealpinum, which is defined as “glanduliferum - alpinum”, could also be interpreted as “glanduliferum> alpinum“.”
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22 March 2013
Steer M. A. & Norton D. A. 2013: Factors influencing abundance of invasive hawkweeds, Hieracium species, in tall tussock grasslands in the Canterbury high country. – New Zealand J. Bot. 51: 61–70.
Abstract:
“Hawkweed (Hieracium species) invasion in the tussock grasslands of South Island, New Zealand, has been well documented. Distribution of these species ranges from montane to alpine grasslands, from Hawkes Bay to Southland. This study quantifies the distribution of three Hieracium species in a high country tall (snow) tussock grassland along the Upper Cass River. Hieracium pilosella and Hieracium praealtum are widespread throughout the study site, whereas Hieracium lepidulum is rare. Major factors influencing the abundance of H. pilosella and H. praealtum are altitude and dense vegetation cover such as tall tussocks, large herbs and sub-shrubs. Both H. pilosella and H. praealtum are present at high altitude,>1800 m above sea level. Differences in the invasion stages of Hieracium species are evident. Mean abundance of H. pilosella ranged from 0.5% cover at altitudes > 1800 m above sea level, to 60% cover at altitudes < 1200 m above sea level. Hieracium praealtum averaged 0.5% cover at all altitudes.”
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14 March 2013
Soto-Trejo F., Kelly J. K., Archibald J. K., Mort M. E., Santos-Guerra A. & Crawford D. J. 2013: The genetics of self-compatibility and associated floral characters in Tolpis (Asteraceae) in the Canary Islands. – Int. J. Pl. Sci. 174: 171–178.
Abstract:
“Members of the genus Tolpis (Asteraceae) endemic to the Canary Islands comprise a monophyletic group with the dispersal of one species to the Cape Verde Islands. Most species are self-incompatible or pseudo-self-compatible perennials. However, one species, Tolpis coronopifolia, consists of self-compatible annual plants with several floral features typical of the selfing syndrome. The evolution of self-compatibility and the selfing syndrome was studied by producing synthetic hybrids between self-incompatible/pseudo-self-compatible and self-compatible plants to determine the genetic architecture of breeding system and floral trait differences. There was a correlation between self-compatibility and selfing floral traits in the F2 generation. Self-incompatibility in Tolpis appears to be controlled by a locus of major effect but with modifier loci affecting seed set. Segregation of floral traits indicates that they are controlled by multiple loci. The high molecular similarity between plants with the two breeding systems suggests that divergence of the self-compatible T. coronopifolia from self-incompatible/pseudo-self-compatible ancestors has been recent. The association between breeding system and floral features likely results from pleiotropy or close linkage and may have facilitated the rapid evolution of the morphologically distinct self-compatible T. coronopifolia.”
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11 March 2013
Tsubota H., Kubo H., Takeuchi K, Nakahara-Tsubota M., Inque Y., Uchida S. & Mukai S. 2012: Notes on naturalized plants in Hiroshima Prefecture: 3. New locality and nrITS variation of Lactuca serriola L. (Asteraceae). – Hikobia 16: 197–202.
Abstract:
“A naturalized plant, Lactuca serriola L. (Asteraceae), was collected from Hiroshima Prefecture, Honshu, southwestern Japan, for the first time. This species was found growing by the road side at a reclamation area in Fukuyama, Mihara, Higashi-hiroshima, Hiroshima, Hatsukaichi and Otake Cities in the prefecture. Three individuals in Hiroshima and Hatsukaichi Cities including two formae, fo. serriola and fo. integrifolia, share a single haplotype of the nuclear ribosomal internal transcribed spacer (nrITS).”
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1 March 2013
Haveman R. 2013: Three hawkweeds (Hieracium, Asteraceae) from the Netherlands typified and raised to species rank. – Nordic J. Bot. 30: xxx–xxx.
Abstract:
“After a short sketch of Dutch hieraciology, three taxa belonging to Hieracium sectt. Vulgata and Tridentata that were described from the Netherlands at the rank of subspecies or variety by Zahn are typified and raised to species rank. Hieracium meppelense (Zahn) Haveman comb. et stat nov. is found in the province of Drenthe in the northeastern part of the country, H. limburgense (Zahn) Haveman comb. et stat nov. in south-Limburg in the southernmost part and H. macrodontophyllum (Van Soest et Zahn) Haveman comb. et stat nov. in the surroundings of Nijmegen and Arnhem, and further north in the central sand area. Photographs of the types as well as maps with the hitherto known distribution of these three species are included.”
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1 March 2013
Iamonico D. 2012: Lectotypification of the Linnaean name Hypochaeris maculata (Asteraceae). – Nordic J. Bot. 30: 222–224.
Abstract:
“The typification of the name Hypochaeris maculata L. is discussed. A specimen from the Linnaean Herbarium (LINN) is designated as the lectotype.”
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1 March 2013
Bell C. D., Mavrodiev E. V., Soltis P. S., Calaminus A. K., Albach D. C., Cellinese N., Garcia-Jacas N. & Soltis D. E. 2012: Rapid diversification of Tragopogon and ecological associates in Eurasia. – J. Evol. Biol. 25: 2470–2480.
Abstract:
“Tragopogon comprises approximately 150 described species distributed throughout Eurasia from Ireland and the UK to India and China with a few species in North Africa. Most of the species diversity is found in Eastern Europe to Western Asia. Previous phylogenetic analyses identified several major clades, generally corresponding to recognized taxonomic sections, although relationships both among these clades and among species within clades remain largely unresolved. These patterns are consistent with rapid diversification following the origin of Tragopogon, and this study addresses the timing and rate of diversification in Tragopogon. Using BEAST to simultaneously estimate a phylogeny and divergence times, we estimate the age of a major split and subsequent rapid divergence within Tragopogon to be ~2.6 Ma (and 1.7–5.4 Ma using various clock estimates). Based on the age estimates obtained with BEAST (HPD 1.7–5.4 Ma) for the origin of crown group Tragopogon and 200 estimated species (to accommodate a large number of cryptic species), the diversification rate of Tragopogon is approximately 0.84–2.71 species/Myr for the crown group, assuming low levels of extinction. This estimate is comparable in rate to a rapid Eurasian radiation in Dianthus (0.66–3.89 species/Myr), which occurs in the same or similar habitats. Using available data, we show that subclades of various plant taxa that occur in the same semi-arid habitats of Eurasia also represent rapid radiations occurring during roughly the same window of time (1.7–5.4 Ma), suggesting similar causal events. However, not all species-rich plant genera from the same habitats diverged at the same time, or at the same tempo. Radiations of several other clades in this same habitat (e.g. Campanula, Knautia, Scabiosa) occurred at earlier dates (45–4.28 Ma). Existing phylogenetic data and diversification estimates therefore indicate that, although some elements of these semi-arid communities radiated during the Plio-Pleistocene period, other clades sharing the same habitat appear to have diversified earlier.”
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1 March 2013
Mavrodiev E. V., Gitzendanner M., Calaminus A. K., Baldini R. M., Soltis P. S. & Soltis D. E. 2012: Molecular phylogeny of Tragopogon L. (Asteraceae) based on seven nuclear loci (Adh, GapC, LFY, AP3, PI, ITS, and ETS). – Webbia 67: 111–137.
Abstract:
“Tragopogon is a large Eurasian genus of approximately 150 species. Despite the use of 6910 aligned bp of sequence data representing seven loci, relationships within the genus remain largely unresolved. The young age of the genus in combination with rapid diversification may be the best explanation for this poor resolution. Our studies have revealed that Geropogon is well supported as the immediate sister to Tragopogon. Sections Tragopogon, Brevirostris, Chromopappus, and Hebecarpus of traditional taxonomic treatments are largely monophyletic; sections Angustissimi, Majores, Collini, and Profondisulcati are non-monophyletic. The monotypic sections Macropogon, Dasypogon, and Dybjanskya appear within other sections and no longer merit recognition. Our molecular investigations of geographically widespread species in Europe, including T. crocifolius, T. pratensis, T. porrifolius, and T. orientalis, indicate that each may be non-monophyletic, comprising several cryptic species. These widespread diploids are the proposed parents of some of the Eurasian allopolyploids, as well as the parents of the recently formed T. mirus and T. miscellus from North America.”
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1 March 2013
Kirschner J., Štěpánek J., Černý T. De Heer P. & Dijk P. J. van 2012: Available ex situ germplasm of the potential rubber crop Taraxacum koksaghyz belongs to a poor rubber producer, T. brevicorniculatum (Compositae–Crepidinae). – Genet. Resources Crop Evol. 60: 455–471.
Abstract:
“Cultivation of the Russian dandelion (Taraxacum koksaghyz) as a rubber producing crop was abandoned more than 50 years ago. Recently the interest in the Russian dandelion has renewed, due to the increasing demand for natural rubber, health problems associated with Hevea rubber and the potential vulnerability of the Hevea production system. Morphological examination and genetic analyses demonstrated that all available ex situ germplasm collections of T. koksaghyz belonged to a single triploid apomictic clone that was misidentified as T. koksaghyz. Morphological, taxonomic and AFLP analyses show that this clone belongs to T. brevicorniculatum a species commonly co-occurring with wild populations of T. koksaghyz in the southeastern Kazakhstan. The type specimen of T. brevicorniculatum is no longer extant and we provide a detailed description and typification, and the characteristics that distinguish it from T. koksaghyz. The investigation of literature reports and herbarium collections indicates that T. koksaghyz seed batches in the past were often contaminated with T. brevicorniculatum. We discuss the possible reasons for the worldwide replacement of T. koksaghyz by a single T. brevicorniculatum clone. New introductions in ex situ collections are urgently needed.”
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18 January 2013
Di Gristina E., Raimondo F. M, Domina G. & Gottschlich G. 2012: Typification of eight names in Hieracium (Asteraceae). – Taxon 61: 1317–1320.
Abstract:
“Eight names in Hieracium (H. atrovirens Froel., H. crinitum Sm., H. lucidum Guss., H. pallidum Biv., H. racemosum subsp. todaroanum Zahn, H. siculum Guss., H. siculum var. minus Guss., H. symphytifolium Froel.), the descriptions of which are based totally or in part on Sicilian material, are typified. Hieracium racemosum subsp. todaroanum is treated as a synonym of H. crinitum, and H. siculum and H. siculum var. minus are treated as synonyms of H. symphytifolium. Hieracium atrovirens is recognized as a subspecies of H. murorum L. (H. murorum subsp. atrovirens (Froel.) Raimondo & Di Grist.).”
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