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