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Sphinctospermum

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Sphinctospermum

Apparently Secure  (NatureServe)[1]
Scientific classification Edit this classification
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
Synonyms[2]
  • Cracca constricta (S.Watson) Tidestr.
  • Tephrosia constricta S.Watson

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

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  1. ^ a b c NatureServe. "Sphinctospermum constrictum". NatureServe Explorer. Arlington, Virginia.
  2. ^ a b "Sphinctospermum constrictum (S.Watson) Rose". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 20 September 2023.
  3. ^ 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.
  4. ^ NRCS. "Sphinctospermum constrictum". PLANTS Database. United States Department of Agriculture (USDA).
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Further reading

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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