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Ecogeographic races of Lesquerella engelmannii (cruciferae): Distribution, chromosome numbers, and taxonomy

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Abstract

Morphological, karyological, and ecological data indicate thatLesquerella engelmannii (Gray) Wats, should be considered withL. ovalifolia Rydb. as comprising a single polymorphic species having diploid, tetraploid, hexaploid, and octaploid populations and exhibiting broad variation, with geographic trends, in vegetative morphology. Three subspecies are distinguished.

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  1. Department of Botany, University of California, 95616, Davis, CA

    Curtis Clark

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  1. Curtis Clark
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This research was carried out in partial fulfillment of the requirements for the Master of Science degree from the University of Oklahoma. Support was provided by a grant from the Oklahoma Biological Survey and by a National Science Foundation Graduate Fellowship. I thank Karen W. Bowers, James R. Estes, George J. Goodman, Phillip M. Hall, Ethen Perkins, Paul G. Risser, Gary D. Schnell, Ronald Segal, Robbin W. Thorp, John and Eve Williams, Joseph T. Yacovino, and my wife Barbara for their assistance.

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Clark, C. Ecogeographic races of Lesquerella engelmannii (cruciferae): Distribution, chromosome numbers, and taxonomy. Brittonia 27, 263–278 (1975). https://doi.org/10.2307/2805897

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