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CHROMOSOME COUNTS IN MEXICAN ERIGERON
Diederik C. D. De Jong and Guy L. Nesom
Vol. 43, No. 3 (JULY-SEPTEMBER 1996), pp. 384-392
Published by: California Botanical Society
Stable URL: http://www.jstor.org/stable/41425149
Page Count: 9
You can always find the topics here!Topics: Species, Chromosomes, Ploidies, Diploidy, Tetraploidy, Plants, Biological taxonomies, Plant morphology, Botany, Species populations
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Chromosome numbers are reported for 75 populations of 19 species of Erigeron from Mexico and 4 populations of 1 species from Arizona. First reports for the species are given for E. fraternus, E. polycephalus, E. strigulosus, and E. wislizeni, and new ploidy levels are reported for E. coronarius van durangensis, E. janivultus, E. forreri, E. pubescens, and E. versicolor. Erigeron gilensis and E. mimegletes are treated as synonyms of E. versicolor, a species previously considered to be endemic to southcentral Mexico. Comments on morphological variability in E. versicolor, E. longipes, E. pubescens, and several other species are provided.
Madroño © 1996 California Botanical Society