Allium nevadense |
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Nevada onion |
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Bulbs | 1–3, not clustered on stout, primary rhizome, with 0–2 stalked, basal bulbels, ovoid, 1–2 × 0.8–1.5 cm; outer coats enclosing 1 or more bulbs, brown, membranous, usually prominently cellular-reticulate, cells ± transversely elongate, intricately contorted, without fibers; inner coats white or pinkish, cells elongate, intricately contorted. |
Leaves | persistent, 1, basally sheathing, sheath not extending much above soil surface; blade solid, terete, 10–20 cm × 1–3 mm. |
Scape | persistent, solitary, erect, ± solid, terete, 5–15 cm × 1–2.5 mm. |
Umbel | persistent, erect, compact, 5–25-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2–3, 3–7-veined, ovate to lanceolate, ± equal, apex acuminate. |
Flowers | stellate, 7–12 mm; tepals spreading, white or pinkish white with dark pink midveins, lanceolate to ovate, ± equal, becoming papery in fruit, margins entire, apex acute to acuminate; stamens included; anthers purple; pollen yellow; ovary crested; processes 6, prominent, ± triangular, margins entire to notched or shallowly toothed; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 8–16 mm. |
Seed | coat dull; cells minutely roughened. |
2n | = 14, 28. |
Allium nevadense |
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Phenology | Flowering Apr–Jun. |
Habitat | Sandy, rocky, or occasionally clay soils on desert plains and hillsides |
Elevation | 1400–1700 m (4600–5600 ft) |
Distribution |
AZ; CA; CO; ID; NV; OR; UT
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Source | FNA vol. 26, p. 248. |
Parent taxa | Liliaceae > Allium |
Sibling taxa | |
Synonyms | A. nevadense var. macropetalum |
Name authority | S. Watson: Botany (Fortieth Parallel), 351, plate 38, figs. 1–3. (1871) |
Web links |