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The Cardamine pratensis (Brassicaceae) Group in the Iberian Peninsula: Taxonomy, Polyploidy and Distribution

Judita Lihová, Andreas Tribsch and Karol Marhold
Taxon
Vol. 52, No. 4 (Nov., 2003), pp. 783-802
DOI: 10.2307/3647352
Stable URL: http://www.jstor.org/stable/3647352
Page Count: 20
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
The Cardamine pratensis (Brassicaceae) Group in the Iberian Peninsula: Taxonomy, Polyploidy and Distribution
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Abstract

The Cardamine pratensis group is a taxonomically critical species complex with pronounced karyological and morphological variation. In the present study, representatives from the Iberian Peninsula have been investigated using karyological, morphometric and molecular (amplified fragment length polymorphism) analyses. As a result of this combined approach, three species are recognized in the area studied: C. pratensis s.str., C. crassifolia, and a herein newly described species, C. castellana. For C. pratensis s.str., consistent with the pattern known from other European regions, wide variation in chromosome numbers is revealed, consisting of diploid to heptaploid populations in northern and central parts of the Peninsula. Little morphological and genetic differentiation accompanies these cytotypes. Re-evaluation of populations up to now ascribed to C. crassifolia reveal two separate taxa: (1) populations from the Eastern Pyrenees, representing typical C. crassifolia, and (2) those from central Iberian mountains treated as C. castellana. These two diploid taxa differ in several quantitative morphological characters, as well as in morphology of rhizome and basal parts of stem, and they are also distinct in AFLP markers, indicating strong genetic differentiation.

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