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.[2][1][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.[1]

References

  1. ^ a b c Sphinctospermum constrictum. NatureServe Explorer.
  2. ^ a b Sphinctospermum constrictum (S.Watson) Rose. Plants of the World Online. Retrieved 20 September 2023.
  3. ^ Lavin M. & J. J. Doyle. 1991. Tribal relationships of Sphinctospermum (Leguminosae): Integration of traditional and chloroplast DNA data. Systematic Botany Vol. 16, No. 1 pp. 162–172.
  4. ^ Sphinctospermum constrictum. USDA NRCS Plants Database.

External links

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