| Sphinctospermum | |
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| Conservation status | |
 Apparently Secure (NatureServe) | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Tribe: | Robinieae |
| Genus: | Sphinctospermum Rose |
| Species: | S. constrictum |
| Binomial name | |
| Sphinctospermum constrictum (S.Watson) Rose | |
| Synonyms | |
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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. The plant is known by the common name hourglass peaseed.
This species occurs in grasslands and dry forests. It grows in sandy soils and is more common in wet years.
References
- ^ NatureServe. "Sphinctospermum constrictum". NatureServe Explorer. Arlington, Virginia.
- ^ "Sphinctospermum constrictum (S.Watson) Rose". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 20 September 2023.
- Lavin, Matt; Doyle, Jeff J. (1991). "Tribal Relationships of Sphinctospermum (Leguminosae): Integration of Traditional and Chloroplast DNA Data". Systematic Botany. 16 (1): 162–172. doi:10.2307/2418980. ISSN 0363-6445. JSTOR 2418980.
- NRCS. "Sphinctospermum constrictum". PLANTS Database. United States Department of Agriculture (USDA).
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
| Taxon identifiers | |
|---|---|
| Sphinctospermum | |
| Sphinctospermum constrictum |
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