| Acmispon haydonii | |
|---|---|
| Conservation status | |
 Vulnerable (NatureServe) | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Fabales |
| Family: | Fabaceae |
| Subfamily: | Faboideae |
| Genus: | Acmispon |
| Species: | A. haydonii |
| Binomial name | |
| Acmispon haydonii (Orcutt) Brouillet | |
| Synonyms | |
| |
Acmispon haydonii, synonyms Lotus haydonii and Syrmatium haydonii, is a species of legume native to California It is known by the common names pygmy lotus, rock bird's-foot trefoil and Haydon's lotus.
It is native to the dry mountain slopes and deserts of southern California, mainly the deserts of eastern San Diego County, where it grows in scrub and woodland habitat. It is a small bushy perennial herb spreading with mostly naked, slender stems. The sparse leaves are made up of usually three tiny leaflets and are deciduous. The inflorescence is generally made up of one or two yellow to reddish pealike flowers each under a centimeter long. The fruit is a curved legume pod also under a centimeter long.
Taxonomy
The species was first described in 1889 by Charles Russell Orcutt as Hosackia haydonii. It was subsequently transferred to Lotus by Greene in 1890, to Syrmatium by August Brand in 1898 and independently by Amos Arthur Heller in 1913, and to Acmispon by Luc Brouillet in 2008.
References
- "NatureServe Explorer - Acmispon haydonii". NatureServe Explorer Acmispon haydonii. NatureServe. 2022-05-30. Retrieved 30 May 2022.
- ^ "Acmispon haydonii (Orcutt) Brouillet", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2021-02-15
- ^ Brouillet, Luc (2012), Jepson Flora Project (ed.), "Acmispon haydonii", Jepson eFlora, Regents of the University of California, retrieved 2018-02-06
- "Plant Name Details for Hosackia haydonii Orcutt", The International Plant Names Index, retrieved 2018-02-07
External links
| Taxon identifiers | |
|---|---|
| Acmispon haydonii | |
| Hosackia haydonii | |
| Syrmatium haydonii | |
| Lotus haydonii | |
 | This Loteae-related article is a stub. You can help Misplaced Pages by expanding it. |