Calochortus westonii

Calochortus westonii, common name Shirley Meadow star-tulip, is a rare endemic plant known only from the Greenhorn Mountains range of the southern Sierra Nevada, within Kern and Tulare Counties, California.

Calochortus westonii
Scientific classification edit
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Liliales
Family: Liliaceae
Genus: Calochortus
C. westonii
Binomial name
Calochortus westonii

Calochortus coeruleus var. westonii (Eastw.) Ownbey

It grows in open locations in meadows and woodlands at elevations of 1,500–2,000 m (4,900–6,600 ft).[2]


Calochortus westonii is bulb-forming herb attaining a height of up to 15 cm (5.9 in). Leaves are basal, persistent, and linear, up to 20 cm (7.9 in) long.

Sepals are green, up to 10 mm (0.39 in) long. Petals are lanceolate, up to 12 mm (0.47 in) long, with long flexible hairs along the margins.[3][4][5][6]


  1. ^ Tropicos
  2. ^ Flora of North America v 26 p 125.
  3. ^ Ownbey, Marion S. 1940. A monograph of the genus Calochortus. Annals of the Missouri Botanical Garden 27: 371–560.
  4. ^ Ownbey, Marion 1969. Calochortus. University of Washington Publications in Botany 17: 765–779.
  5. ^ Eastwood, Alice. 1931. New species of plants from western North America. Proceedings of the California Academy of Sciences, Series 4, 20(5):135-160.
  6. ^ Hickman, J. C. 1993. The Jepson Manual: Higher Plants of California 1–1400. University of California Press, Berkeley.