Biosystematics of the Lupinus mexicanus complex
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"Lupinus mexicanus was the first taxon in the genus Lupinus named for Mexico; therefore, the establishment of its identity and description became of substantial importance to the taxonomy of the complex it represented, as well as to the systematics of the genus in Mexico. Work was formally initiated on the Lupinus mexicanus complex after Dunn (1972) probed into the perplexing question of the taxon, L. mexicanus, and proposed the illustration in Edward’s Botanical Register (#457; 1820) serve as the type. The present monograph represents an effort to reveal the limits of the complex beginning with the previously ignored taxon, L. mexicanus. It also attempts to resolve the systematic and nomenclatural problems which resulted from such an investigation. Pursuit of a complete understanding of the Lupinus mexicanus complex involved reviewing taxonomic literature and correlating and comparing it with as many herbarium specimens as could be obtained relating to the complex. Distribution, ecology, and plant associations of the populations under study were noted. Morphological studies were performed. In addition to these traditional approaches to taxonomy, alkaloid thin-layer chromatography and breeding studies, including pollen viability, were also incorporated. Thus, a biosystematic approach was utilized in evaluating the Lupinus mexicanus complex of Mexico."--Introduction.
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M.A.