Lotus crassifolius

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Lotus crassifolius
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Tribe: Loteae
Genus: Lotus
Species: L. crassifolius
Binomial name
Lotus crassifolius
(Benth.) Greene

Hosackia crassifolia Benth.
(current reclassification)[1][2]

Lotus crassifolius, now reclassified as Hosackia crassifolia,[1] is a species of trefoil, a legume, known by the common names big deervetch and broad-leafed lotus.[2]


The plant is native to western North America, in California, Oregon, and Washington (U.S. states); and into Baja California (Méxican state).

The California populations are found in diverse habitats, including chaparral, California oak woodland, California mixed evergreen forest, and conifer forest.[1][2]


Lotus crassifolius/Hosackia crassifolia is a long-lived, somewhat bushy plant which bears long straight stems with evenly spaced oval-shaped leaves.[1]

It produces thick bunches of yellow, pink-and-yellow, or scarlet-and-yellow pea flowers.[1] The bloom period is May to August.[2]

The brownish pea pods contain speckled red or brown peas.



  1. ^ a b c d e Jepson eFlora: Hosackia crassifolia . accessed 12 June 2016.
  2. ^ a b c d Calflora: Hosackia crassifolia . accessed 12 June 2016.
  3. ^ Calflora: Hosackia crassifolia var. crassifolia
  4. ^ Calflora: Hosackia crassifolia var. otayensis
  5. ^ California Native Plant Society, Inventory of Rare and Endangered Plants (online edition, v8-02): report for Hosackia crassifolia var. otayensis . accessed 12 June 2016.

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