Lupinus saxosus

Lupinus saxosus is a species of lupine known by the common name rock lupine. It is native to eastern Washington, eastern Oregon, and the northeast corner of California,[1]where it grows in sagebrush and other habitat. It may also be native to Idaho and Nevada.[2]

Lupinus saxosus

Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Fabales
Family: Fabaceae
Subfamily: Faboideae
Genus: Lupinus
Species:
L. saxosus
Binomial name
Lupinus saxosus
Howell
Synonyms

Lupinus polyphyllus var. saxosus (Howell)

Description

This is a perennial herb growing erect 20 to 30 centimeters (7.9 to 11.8 in) tall. Each palmate leaf is made up of 7 to 13 hairy leaflets 1 to 4 centimeters (0.39 to 1.57 in) long. Stiff long hairs are found on the undersides and edges of the leaves, with no hair on top. The inflorescence is a dense raceme of many flowers sometimes arranged in whorls. The flower is between 1 and 2 centimeters (0.39 and 0.79 in) long and blue in color with a yellowish or violet patch on its banner. The fruit is a shaggy-haired legume pod up to 4 centimeters (1.6 in) in length. The flowering time is early spring.[1] The 8 to 12 leaflets have acute or rounded tips. It is shorter than most lupine species.[3] The bloom period is between the months of May and June. You shouldn’t eat any part of the lupine.[4] It is most commonly found between the elevations of 4,000 to 6,000 feet (1,200 to 1,800 m).[5] 52.3% of the time it was found, it was found in May, and 19.8% of the time, it was found in June. [6]

Habitat

This lupine is often found in shallow rocky soils that are dry to bedrock by midsummer.

References
  1. "Lupinus saxosus | Stony-ground Lupine | Wildflowers of the Pacific Northwest". www.pnwflowers.com. Retrieved 2023-08-14.
  2. "Lupinus saxosus Howell | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 2023-08-14.
  3. "Meadow Lupine, Rock Lupine, Stony-ground Lupine: Lupinus polyphyllus var. saxosus (Synonyms: Lupinus saxosus, Lupinus saxosus var. saxosus, Lupins saxosus var. subsericeus, Lupinus subsericeus)". science.halleyhosting.com. Retrieved 2023-08-14.
  4. "Lupinus saxosus Calflora". www.calflora.org. Retrieved 2023-08-14.
  5. "Lupinus saxosus | rock lupine". wildflowersearch.org. Retrieved 2023-08-14.
  6. "Lupinus saxosus Howell". www.gbif.org. Retrieved 2023-08-14.
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