Strophostyles leiosperma, known as slickseed fuzzybean, or smoothseed / small-flower wildbean[3][4] is a species of herbaceous, vining legume native to the central to western U.S. It occurs west to Colorado and New Mexico, east to Louisiana, south to Mexico, and north to Minnesota.[5][6] It is most easily distinguished from the other two Strophostyles species by the abundance of small silky hairs on its leaves and pods, and small pea-shaped flowers with a much reduced keel that is largely hidden by the wing petals.
| Strophostyles leiosperma | |
|---|---|
| |
| Typical flower & pod, Gray Summit, Missouri | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Strophostyles |
| Species: | S. leiosperma
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| Binomial name | |
| Strophostyles leiosperma | |
| Synonyms[2] | |
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List
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This species is an annual to short-lived perennial. All parts tend to be smaller for S. leiosperma in general than its congeners, and it is a more diminutive plant overall. The leaflets are typically thin and rarely lobed (never deeply lobed). Unlike its congeners, its seeds rarely have a waxy, hairy covering, and it tends to occur in drier sites.[5] Likewise, the specific epithet leiosperma means "smooth seed."[7] It is also the most likely of these species to be capable of self-fertilization.[5]
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S. leiosperma flower & unripe pod
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References
edit- ^ NatureServe (2024). "Strophostyles leiosperma". Arlington, Virginia. Retrieved 27 August 2024.
- ^ "Strophostyles leiosperma (Torr. & A.Gray) Piper". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 27 August 2024.
- ^ "ITIS Standard Report Page: Strophostyles leiosperma". www.itis.gov. Retrieved 2018-09-22.
- ^ "Taxonomy - GRIN-Global Web v 1.10.3.6". npgsweb.ars-grin.gov. Retrieved 2018-09-22.
- ^ a b c Riley-Hulting, Erin T.; Delgado-Salinas, Alfonso; Lavin, Matt (2004). "Phylogenetic Systematics of Strophostyles (Fabaceae): A North American Temperate Genus within a Neotropical Diversification". Systematic Botany. 29 (3): 627–653. doi:10.1600/0363644041744464. JSTOR 25063997.
- ^ "Plants Profile for Strophostyles leiosperma (slickseed fuzzybean)". plants.usda.gov. Retrieved 2018-09-22.
- ^ "A Grammatical Dictionary of Botanical Latin". www.mobot.org. Retrieved 2018-09-22.
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