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Chromosome studies: Mexican Compositae
Author(s) -
Strother John L.,
Panero Jose L.
Publication year - 2001
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.2307/2657115
Subject(s) - phyletic gradualism , biology , heliantheae , taxon , chromosome number , chromosome , evolutionary biology , zoology , asteraceae , karyotype , botany , phylogenetics , genetics , gene
Chromosome observations reported here from 70 collections representing 65 species from 40 genera of Compositae (mostly Heliantheae) provide taxonomically useful information. First counts for 28 species, including the first count for Psacaliopsis , may prove to be especially interesting in relation to phyletic and taxonomic alignments of the taxa. Of special interest among first reports is 2 n = 5 II for Stevia lita ; other stevias have x = 11, 12, or 17. Thirteen of our counts differ from prior reports and may also be of particular interest in phyletic and taxonomic contexts.