Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: All-Russian Conference with International Participation on Diversity of Soils and Biota of Northern and Central Asia, DSBNCA 2021
Год издания: 2021
Идентификатор DOI: 10.1088/1755-1315/908/1/012027
Аннотация: Waldsteinia Willd. is a small herbaceous genus presumably of Neogene age and formerly wide-distributed around the Northern Hemisphere and now presents the remnants of the tertiary flora. According to the latest taxonomic revision, Waldsteinia is considered a group nested in Geum L. A comparatively low level of morphological divergeПоказать полностьюnce together with fuzzy ploidy patterns within Waldsteinia could not be reliable evidence to establish the former distributions and migration pathways of species. In the present study, using plastid DNA (trnH-psbA) data we tried to throw light on Waldsteinia history. Based on our data we believe that the taxonomic decision of nesting Waldsteinia in Geum does not reflect the complex structure of the obtained clade. The phylogenetic analysis showed that the objectivity of previous division Waldsteinia on two subgenera, Waldsteinia and Comaropsis (Rich. ex Nestl.) Teppner, which was based on morphological differences, is becoming controversial. We also suggest an East Asian origin of Waldsteinia and subsequent speciation and taxa distribution in the direction of Europe and North America. W. ternate s.l. (traditionally including W. maximowicziana, W. ternata, and W. trifolia) is appeared to be a polyphyletic group and at least W. maximowicziana should be considered a distinct species. © Published under licence by IOP Publishing Ltd.
Журнал: IOP Conference Series: Earth and Environmental Science
Выпуск журнала: Vol. 908, Is. 1
Номера страниц: 12027
ISSN журнала: 17551307
Издатель: IOP Publishing Ltd