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Herbs, perennial, scapose, from fibrous-coated corms. Leaves 1-5, basal; blade narrowly lanceolate, usually keeled and channeled, margins entire. Scape solitary, usually weak, curved to twining, cylindrical, smooth to scabrous. Inflorescences umbellate or racemose, usually dense, 2-20-flowered, bracteate; bracts 2-4, ± papery, not enclosing flower buds. Flowers: perianth 6-tepaled, distinctly connate proximally into tube, tube cylindrical, ovoid, or campanulate, occasionally globose or urceolate, soft, limb lobes similar; perianth appendages arising from intersection of perianth tube and limb lobes, leaning toward or away from anthers, forming corona; anthers basifixed, held close to style; stamens 3 (6 in Dichelostemma capitatum), epitepalous; filaments entirely adnate to perianth tube; staminodia absent (except in D. volubile) ; pistil 3-carpellate; ovary superior, sessile or stipitate, 3-locular, ovules several; style 1; stigma weakly 3-lobed; pedicel erect or flexuous, articulate beneath perianth, usually shorter than flowers. Fruits capsular, 3-angled, usually ovoid, firm, dehiscence loculicidal. Seeds black, sharply angled, coat with crust. x = 9 (8 in D. ida-maia).

Species 5: w North America including n Mexico (Baja California, Sonora).^[1]

Photos

Map

Taxonomy

Bibliography

• Hoover, R. F. 1940b. The genus Dichelostemma. Amer. Midl. Naturalist 24: 463-476.
• Keator, G. 1967. Ecological and Taxonomic Studies on the Genus Dichelostemma. Ph.D. thesis. University of California, Berkeley.
• Keator, G. 1991. Studies in the genus Dichelostemma. Four Seasons 9: 24-39.
• Lenz, L. W. 1976. The nature of the floral appendages in four species of Dichelostemma. Aliso 8: 379-381.

Footnotes

1. J. Chris Pires "Dichelostemma". in Flora of North America Vol. 26 Page 53, 55, 321, 328, 329, 331, 332. Oxford University Press. Online at EFloras.org.

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