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Relationships in Taraxacum section Arctica s.l. (Asteraceae, Cichorieae) and allies based on nrITS
Author(s) -
Uhlemann I.,
Ritz C. M.,
Peñailillo P.
Publication year - 2009
Publication title -
feddes repertorium
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.24
H-Index - 25
eISSN - 1522-239X
pISSN - 0014-8962
DOI - 10.1002/fedr.200811193
Subject(s) - ruderal species , taxon , biology , botany , asteraceae , systematics , ecology , taxonomy (biology) , habitat
nrITS sequences of 19 Taraxacum ‐species as well as four outgroups of Asteraceae‐Cichorieae were analysed using Bayesian and parsimony analyses in order to establish their systematics. The Arctica s.l. clade together with T. bessarabicum is sister to all derived European and South American taxa. The division of Arctica s.l. into smaller units (sections: Antarctica , Arctica s. str., Australasica ) is supported. Within the remaining taxa, Taraxacum farellonicum , a species from the Chilean Andes which is described as new, is supposed to be a hybrid of T. gilliesii and an introduced Ruderalia ‐species. Section Erythrosperma is well separated and supported. With the exception of T. patagonicum and T. bracteatum which are sister to the other representatives of the European taxa two groups are distinguished: first the Ruderalia/Hamata alliance (including T. tenebricans with some exceptional characters) of predominantly ruderal species and second an assemblage of the sections Celtica , Fontana , Macrodonta , Palustria and Taraxacum prefering a lesser ruderal habitate. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)