Allium perdulce |
Allium campanulatum |
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plains onion |
dusky onion, rosy Sierra onion, Sierra onion |
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Bulbs | 2–20+, without basal bulbels, 1–2.5 × 1.2–2.8 cm; outer coats enclosing 1 or more bulbs, dark brown, reticulate, cells coarse-meshed, open, fibrous; inner coats whitish, cells regular, vertically elongate, walls not sinuous. |
1–3, producing cluster of stalked basal bulbels distal to roots or filiform rhizomes to 10 cm and terminated by bulbels, ovoid, 1–2 × 0.6–1.4 cm; outer coats enclosing 1 or more bulbs, brown to gray, membranous, cellular-reticulate, cells ± quadrate, walls very sinuous, without fibers; inner coats pink to white, cells obscure, vertically elongate. |
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Leaves | persistent, green at anthesis, 3–5, sheathing; blade solid, flat, channeled, 8–30 cm × 1–2(–3) mm, margins entire. |
persistent, withering from tip by anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, distinctly concave-convex, 8–40 cm × 1–5 mm, margins entire. |
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Scape | persistent, solitary, erect, ± terete, 10–20 cm × 1–3 mm. |
persistent, solitary or clustered, 1–3, erect, solid, terete, 10–30 cm × 1–5 mm. |
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Umbel | persistent, erect, loose, 5–25-flowered, hemispheric-globose, bulbils unknown; spathe bracts persistent, 2–3, 3–7-veined, ovate, ± equal, apex acuminate. |
persistent, erect, loose, 10–50-flowered, ± globose, bulbils unknown; spathe bracts persistent, 2–3, 3–5-veined, ovate to lanceolate, ± equal, apex acuminate. |
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Flowers | urceolate, 7–10 mm; tepals erect, white or pale pink with deep pink midribs to deep rose, lanceolate, ± equal, becoming callous-keeled and permanently investing capsule, margins entire, apex obtuse or acute; stamens included; anthers yellow or purple; pollen yellow; ovary crestless; style linear, ± equaling stamens; stigma capitate, unlobed or obscurely lobed; pedicel 3–17 mm, ± 2 times perianth at anthesis, elongating in fruit. |
stellate, 5–8 mm; tepals spreading, rose to purple (rarely white) with darker purple crescent adaxially basally, lanceolate to ovate, ± equal, carinate in fruit, becoming erect, ± shiny, rigid, margins entire, apex acuminate, strongly involute at tip; stamens included; anthers purple; pollen yellow; ovary crested; processes 6, prominent, low, central, triangular, margins minutely denticulate; style linear, ± equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 10–20 mm, becoming flexuous and mostly strongly deflexed in fruit. |
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Seed | coat dull or shining; cells minutely roughened. |
coat shining; cells each with minute, central papilla. |
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2n | = 14, 28. |
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Allium perdulce |
Allium campanulatum |
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Phenology | Flowering late May–Aug. | |||||
Habitat | Generally sandy soils on open or shaded slopes | |||||
Elevation | 600–2600 m (2000–8500 ft) | |||||
Distribution |
c North America
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CA; NV; OR
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 241. | FNA vol. 26, p. 256. | ||||
Parent taxa | ||||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | A. austinae, A. bidwelliae, A. campanulatum var. bidwelliae | |||||
Name authority | S. V. Fraser: Trans. Kansas Acad. Sci. 42: 124. (1940) | S. Watson: Proc. Amer. Acad. Arts 14: 231. (1879) | ||||
Web links |