Cytotaxonomy of Chrysopsis and Heterotheca (Compositae-Astereae): a new interpretation of phylogeny

Publisher Website
Google Scholar
Abstract
The chromosome numbers for 137 populations of 24 spp. are reported. First reports of n = 5 are given for Chrysopsis decumbens, C. floridana, C. hyssopifolia, C. lanuginosa, C. latisquamea and C. scabrella and 2n = 18 for C. cruiseana. The occurrence of the diploid 2n = 8 for C. mariana is also reported for the 1st time. The base number of Heterotheca is x = 9, while the base numbers of Chrysopis are x = 4 and 5 and x2 = 9. A realignment of sections included in the 2 distinct genera is proposed.

This publication has 3 references indexed in Scilit: