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A biosystematic study of the Panicum amarum-P. Amarulum complex (Gramineae)

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Abstract

Panicum amarum andP. amarulum exhibit north-south clinal variation and are virtually indistinguishable in the southern part of their range. Cytological evidence indicates thatP. amarum (2n = 54) is probably an autohexaploid derivative ofP. amarulum (2n = 36). The minor morphological differences, the apparent close genetic relationship, and the close ecological and chemical affinities between these two taxa indicate thatP. amarum andP. amarulum should have varietal rather than specific rank.

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Authors and Affiliations

  1. Biology Department, Louisburg College, 27549, Louisburg, NC

    Patricia G. Palmer

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  1. Patricia G. Palmer
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Additional information

Based on a Ph.D. thesis submitted to the Department of Botany, North Carolina State University, Raleigh. I thank D. H. Timothy, J. W. Hardin, and S. D. Koch for their help. This work was supported by grant GY-6918 and by a faculty fellowship, both from the National Science Foundation. Wilma Hu provided valuable assistance.

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Palmer, P.G. A biosystematic study of the Panicum amarum-P. Amarulum complex (Gramineae). Brittonia 27, 142–150 (1975). https://doi.org/10.2307/2805475

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  • DOI: https://doi.org/10.2307/2805475

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