Sphinctospermum
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Sphinctospermum is a genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Faboideae. It is a monotypic genus, containing the single species Sphinctospermum constrictum. It is native to North America, where it occurs in western and central Mexico and in Arizona in the southwestern United States.[1][2][3] The plant is known by the common name hourglass peaseed.[4]
This species occurs in grasslands and dry forests. It grows in sandy soils and is more common in wet years.[2]
References
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External links
- Sphictospermum. The Plant List.
Further reading
Lavin, M. 1990. The genus Sphinctospermum (Leguminosae): Taxonomy and tribal relationships as inferred from a cladistic analysis of traditional data. Systematic Botany Vol. 15, No. 4 pp. 544–559