Syrmatium prostratum

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Syrmatium prostratum
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Genus: Syrmatium
Species: S. prostratum
Binomial name
Syrmatium prostratum
  • Hosackia palmeri Vasey & Rose
  • Lotus nuttallianus Greene
  • Lotus prostratus L.
  • Acmispon prostratus (Torr. & A.Gray) Brouillet

Syrmatium prostratum, synonyms Lotus nuttallianus and Acmispon prostratus, is a species of legume native to California and northwestern Mexico.[1][2] It is known by the common names beach lotus, Nuttall's lotus, and wire bird's-foot trefoil. It is native to Baja California and just into San Diego County, California, where it is a resident of coastal habitats, such as beaches and bluffs.

It is a rare plant of the highly developed coastline in and around the city of San Diego, where threatened populations are known at Mission Bay,[3] the Silver Strand and Imperial Beach.[4]

This is an annual herb lined with leaves made up of oval leaflets one half to one centimeter long. The inflorescence bears 3 to 8 red and yellow flowers each about a centimeter in length. The fruit is a slender, curved legume pod containing usually 2 small beanlike seeds.


  1. ^ a b c "Syrmatium prostratum Greene", Plants of the World Online, Royal Botanic Gardens, Kew, retrieved 2018-02-05 
  2. ^ a b Brouillet, Luc (2012), Jepson Flora Project, ed., "Acmispon prostratus", Jepson eFlora, Regents of the University of California, retrieved 2018-02-06 
  3. ^ City of San Diego Planning Department Archived 2011-06-14 at the Wayback Machine.
  4. ^ California Native Plant Society Rare Plant Profile

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