Open AccessNew chromosome counts in the genus Cousinia and the related genus Schmalhausenia (Asteraceae, Cardueae)
Author(s) -
SUSANNA ALFONSO,
GARCIAJACAS NÚRIA,
VILATERSANA ROSER,
GARNATJE TERESA,
VALLÈS JOAN,
GHAFFARI SEYED MAHMOOD
Publication year - 2003
Publication title -
botanical journal of the linnean society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.872
H-Index - 68
eISSN - 1095-8339
pISSN - 0024-4074
DOI - 10.1111/j.1095-8339.2003.00231.x
Subject(s) - biology , genus , asteraceae , pollen , zoology , chromosome , evolutionary biology , botany , genetics , gene
Twenty chromosome counts are reported in the genus Cousinia and the monotypic genus Schmalhausenia , which are part of the Arctium group, from Armenia, Iran, Kazakhstan and Uzbekistan. Twelve are new and eight provide confirmation of scarce or disputable previous data. The correlation between karyological data, pollen type and molecular phylogeny is very close, and on this basis two main groups can be defined. One is the arctioid group, which comprises the genera Arctium and Schmalhausenia , and a small part of the genus Cousinia , with x = 18. The other is the genus Cousinia s.s. , with a dysploid series ranging from x = 13–11. Some considerations on the chromosomal evolution in the group are made. © 2003 The Linnean Society of London, Botanical Journal of the Linnean Socety , 2003, 143 , 411–418.