Taxonomy of Thermopsis (Fabaceae) in North America Author(s): Chia Jui Chen, Meghan G. Mendenhall and Billie L. Turner Source: Annals of the Missouri Botanical Garden, Vol. 81, No. 4 (1994), pp. 714-742 Published by: Missouri Botanical Garden Press Stable URL: http://www.jstor.org/stable/2399917 Accessed: 18-06-2015 19:07 UTC Your use of the JSTOR archive indicates your acceptance of the Terms & Conditions of Use, available at http://www.jstor.org/page/ info/about/policies/terms.jsp JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact
[email protected]. Missouri Botanical Garden Press is collaborating with JSTOR to digitize, preserve and extend access to Annals of the Missouri Botanical Garden. http://www.jstor.org This content downloaded from 128.83.205.78 on Thu, 18 Jun 2015 19:07:36 UTC All use subject to JSTOR Terms and Conditions TAXONOMYOF THERMOPSIS Chia JuiChen,2 Meghan G. Mendenhall,3 (FABACEAE) IN NORTH and Billie L. Turner4 AMERICA' ABSTRACT Comprehensive reevaluation of both herbarium specimens and fieldobservations of the North American Thermopsis leads to our recognition of 10 species. Three species occur in the southern Appalachians: T. villosa, T. mollis, and T fraxinifolia. The Rocky Mountains and intermountainregions are populated by the relativelyvariable and widespread species T. divaricarpa, T. montana, and T rhombifolia. The Pacific coastal mountains of California are dominated by the variable T californica (with three infraspecifictaxa), which gives way to T gracilis in northern California and western Oregon.