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Heldreichia Boiss. (Brassicaceae) revisited: A morphological and molecular study
Author(s) -
Parolly Gerald,
Nordt Birgit,
Bleeker Walter,
Mummenhoff Klaus
Publication year - 2010
Publication title -
taxon
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.819
H-Index - 81
eISSN - 1996-8175
pISSN - 0040-0262
DOI - 10.1002/tax.591018
Subject(s) - subspecies , biology , monophyly , taxon , brassicaceae , range (aeronautics) , genus , molecular phylogenetics , eudicots , botany , genetic diversity , evolutionary biology , taxonomy (biology) , zoology , phylogenetic tree , population , clade , biochemistry , materials science , demography , sociology , composite material , gene
Abstract The small Southwest Asian scree plant genus Heldreichia Boiss. (Brassicaceae) with its diversity centre in Anatolia, is revised in a morphological and molecular (ITS sequence) monograph. Heldreichia taxa under study appear to be monophyletic in the Bayesian tree; the tribal position remains unclear. A re‐evaluation of morphological characters resulted in a new taxonomic concept of Heldreichia . We suggest only one single polymorphic species, H . bupleurifolia , with four largely geovicarious subspecies, including a new subspecies, H . bupleurifolia subsp. polymorpha , for the westernmost populations of the Taurus range. Geographical areas with higher morphological and molecular diversity correspond to the generally accepted speciation and diversity centres of the Taurus range. Inter‐pluvial migration events between isolated mountain ranges may have contributed to the morphological and genetic diversity within Heldreichia. Populations with non‐entire leaf margins, traditionally named H . rotundifolia , should have evolved polytopically. Keys, a distribution map and illustrations are provided for all accepted subspecific taxa. Heldreichia bupleurifolia var. subtriloba and H . kotschyi are lectotypified.