Sojak J.,National Museum in Prague
Annales Botanici Fennici | Year: 2011
Potentilla radiata Lehm., described from northern Iran, also occurs in the Caucasus, Transcaucasia and NE Turkey. It has been reported as P. svanetica Siegfr. & R. Keller, P. sommieri Siegfr. & R. Keller or P. armeniaca Siegfr. ex Th. Wolf by local authors. It was occasionally collected also in the N part of European Russia and in Romania, being described as P. × burduja Prodán & Ţopa, P. × leteae Prodán, P. × moeszii Jáv. ex Prodán, P. × porciusii Prodán and P. gordiaginii Juz. The name P. radiata Lehm., not used previously, has priority over all of the mentioned names. Potentilla radiata is interpreted as a hybrid between P. argentea L. and P. thuringiaca Bernh. ex Link. © Finnish Zoological and Botanical Publishing Board 2011.
Sojak J.,National Museum in Prague
Feddes Repertorium | Year: 2010
The mode of origin of Potentilla crantzii (quinate leaves) from the Asian P. gelida (ternate leaves) can be observed in Tien Shan and in mountains of southern Siberia even at present. Transitional forms between them also occur in the far North-East of Asian Russia and from the Ural to Norway. Potentilla puberula (P. pusilla according to contemporary authors) did not originate by hybridization between P. incana (P. arenaria) and P. verna (P. tabernaemontani), as is usually assumed. On the contrary, P. verna is derived from the hybrid species P. puberula, i.e., from the offspring of crosses between P. heptaphylla and P. incana. It arose from them by way of gradual loss of stellate and partly reduced stellate hairs. This process took place mainly in the past but may be documented reliably. The name P. pusilla Host 1831 has been used since 1949 for the hybrid plants mentioned. The monographer of the genus Wolf (1908: 601) studied its type specimen and ascertained that it has only simple hairs, determining it as P. verna L. The type specimen of P. pusilla is currently lost. The name is doubtful. It is recommended herein to replaced it with the name P. puberula Krašan 1867. © 2010 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Fikacek M.,National Museum in Prague |
Fikacek M.,Charles University |
Minoshima Y.N.,Kitakyushu Museum of Natural History and Human History |
Newton A.F.,Center for Integrative Research
Annales Zoologici | Year: 2014
The taxonomy and morphology of species related to the genus Andotypus Spangler, 1979 (Coleoptera: Hydrophiloidea: Hydrophilidae: Rygmodinae) are reviewed in detail. Austrotypus gen. nov. is established for A. nothofagi sp. nov. (eastern Australia) and A. peruanus sp. nov. (Peru), both of which share the same morphology of the mouthparts and mesoventrite. The genus Andotypus is found to be endemic to central and sourthern Chile, containing two species: A. ashworthi Spangler, 1979 and A. araucariae sp. nov. Andotypus perezdearcei Moroni, 2000 is found to belong to the genus Dactylosternum Wollaston, 1854 (Hydrophilidae: Sphaeridiinae: Coelostomatini), and is a junior subjective synonym of the introduced species D. abdominale (Fabricius, 1792). Adults of all species of Andotypus and Austrotypus are (re)described in detail and important characters are illustrated. Larval morphology and head chaetotaxy is described and illustrated in detail for Andotypus ashworthi and Austrotypus nothofagi, revealing differences in head morphology and abdominal tergites which support the separate status of both genera. The taxonomic position of the genera within the Rygmodinae is briefly discussed, but should be corroborated by formal phylogenetic analysis. We hypothesize that the austral disjunct distribution of Austrotypus as well as current distribution of Andotypus are results of the break-up of Gondwana combined with changes of climate in austral South America, Antarctica and Australia during the Cenozoic. Andotypus and Austrotypus represent an independently evolved lineage of dung- and carrion-associated beetles native to the southern temperate zone, and the fact that their larvae largely resemble those of Sphaeridium Fabricius, 1775 suggests that they may represent a partial ecological analogue of the Old World medium-sized coprophilous hydrophilids of the tribe Sphaeridiini. The syntopical co-occurrence of Austrotypus nothofagi with four similarly colored scarabaeoid dung-inhabiting beetles (Onthophagus sydneyensis Blackburn, 1903, O. arrilla Matthews, 1972, Lepanus ustulatus (Lansberge, 1874) and Liparochrus nanus Paulian, 1980) suggests that Austrotypus nothofagi may be a member of a mimetic complex formed by these species. © 2014 Fundacja Natura optima dux.
Sojak J.,National Museum in Prague
Thaiszia Journal of Botany | Year: 2012
Copies of Siberian species Potentilla omissa, P. angarensis, P. approximata, P. tobolensis, P. acervata and P. chalchorum, and Euro-Siberian species P. intermedia were created by experimental hybridization of their putative parents. Besides copies of these naturally occurring species, 20 hybrid combinations of Potentilla, which have mostly not been found in nature, were also obtained.
Zaveska E.,Charles University |
Fer T.,Charles University |
Sida O.,National Museum in Prague |
Krak K.,Academy of Sciences of the Czech Republic |
And 3 more authors.
Taxon | Year: 2012
Curcuma comprises 120 species that occur throughout tropical and subtropical Asia. The taxonomy of the genus is haunted by polyploid speciation and homoploid hybridization, making it the most challenging genus in Zingibereae (Zingiberaceae). Curcuma is best known for turmeric (C. longa), but numerous species are extensively used as medicinal plants, ornamentals, and sources of starch, among many other uses. The delimitation of the genus has been a matter of dispute since its establishment by Linnaeus (1753), and further conflict has arisen from recent molecular and morphological studies suggesting either paraphyly of Curcuma or the necessity to broaden the genus to include four small genera (Laosanthus, Paracautleya, Stahlianthus, Smithatris) as well as several species currently placed in Kaempferia and Hitchenia. All previous infrageneric classifications were based on limited material that did not include species from the Indochinese floristic region, and these classifications are unable to unequivocally accommodate all currently known members of the genus. To test the monophyly and delimitation of Curcuma and to gain more insight into infrageneric relationships, three plastid regions (trnL-trnF, psbA-trnH, matK) and the internal transcribed spacer (ITS) of nuclear ribosomal DNA were sequenced. Fifty Curcuma species covering the morphological and geographic variation of the genus and 12 Curcuma-like species currently or previously treated as members of other genera were included in this study. In addition, four Zingibereae and three other Zingiberaceae species were used as outgroups. The results of maximum parsimony and Bayesian analyses clearly support a broad generic boundary for Curcuma, with inclusion of Laosanthus, Paracautleya, Stahlianthus, Smithatris and some species of Kaempferia and Hitchenia (K. scaposa, K. candida, H. caulina, H. glauca). Four main groups in Curcuma s.l. were detected, and their importance for classification at the subgenus level is discussed. A new infrageneric classification is proposed here with a formal description of a new subgenus. Cloning uncovered a broad range of variation of ITS sequences within individuals, particularly in the terminal 'Curcuma' group containing representatives of the nominal subgenus Curcuma. This 'intra-individual ITS polymorphism' increases with ploidy level and is coupled with preferred vegetative reproduction. Additional studies are needed to further uncover highly complex relationships in this subgenus.