Sphinctospermum

Life-forms

Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Eudicots
Cladus: Core eudicots
Cladus: Rosids
Cladus: Eurosids I
Ordo: Fabales

Familia: Fabaceae
Subfamilia: Faboideae
Tribus: Robinieae
Genus: Sphinctospermum
Species: S. constrictum
Name

Sphinctospermum Rose, 1906
Distribution
Native distribution areas:

Continental: Northern America
Regional: Southwestern USA
Arizona
Regional: Mexico
Mexico Central, Mexico Northwest, Mexico Southwest

References: Brummitt, R.K. 2001. TDWG – World Geographical Scheme for Recording Plant Distributions, 2nd Edition
References
Primary references

Rose, J.N., 1906. Contr. U.S. Natl. Herb. 10: 107

Links

Govaerts, R. et al. 2021. Sphinctospermum in Kew Science Plants of the World online. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2021 Jun 22. Reference page.
International Plant Names Index. 2021. Sphinctospermum. Published online. Accessed: Jun 22 2021.
Tropicos.org 2021. Sphinctospermum. Missouri Botanical Garden. Published on the internet. Accessed: 2021 Jun 22.
Hassler, M. 2021. Sphinctospermum. World Plants: Synonymic Checklists of the Vascular Plants of the World In: Roskovh, Y., Abucay, L., Orrell, T., Nicolson, D., Bailly, N., Kirk, P., Bourgoin, T., DeWalt, R.E., Decock, W., De Wever, A., Nieukerken, E. van, Zarucchi, J. & Penev, L., eds. 2021. Species 2000 & ITIS Catalogue of Life. Published on the internet. Accessed: 2021 Jun 22. Reference page.
Hassler, M. 2021. World Plants. Synonymic Checklist and Distribution of the World Flora. . Sphinctospermum. Accessed: 22 Jun 2021.

Vernacular names

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 Mexico and Arizona in the southwestern United States.[1][2] The plant is known by the common name hourglass peaseed.[3]

This species occurs in grasslands and dry forests. It grows in sandy soils and is more common in wet years.[1]
References

Sphinctospermum constrictum. NatureServe Explorer.
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.

Sphinctospermum constrictum. USDA NRCS Plants Database.

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