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Document Type

Research

Abstract

Chromosome numbers and pollen measurements are given for sixty-four collections representing eight species in the grass genus Aristida from central and southwestern United States. Meiotic chromosome counts of N=22, 33, and 44, in A. purpurea are reported for the first time. Counts of N=11 and 22 in A. fendleriana, A. glauca, and A. wrightii, are new for these species, as are counts of N=11 for A. longiseta and A. roemeriana. The relationship of pollen size and ploidy level is examined in five taxa, and the occurrence of intraspecific polyploidy in the genus is noted.

Publication Date

1969

Journal Title

Proceedings of the Iowa Academy of Science

Volume

76

Issue

1

First Page

74

Last Page

81

Copyright

© Copyright 1969 by the Iowa Academy of Science, Inc.

Language

EN

File Format

application/pdf

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