Allium geyeri |
Allium atrorubens |
|||||||||
---|---|---|---|---|---|---|---|---|---|---|
Geyer's onion |
dark red onion, red onion |
|||||||||
Bulbs | 2–10+, not rhizomatous, ovoid or more elongate, 1–2.5 × 0.8–2 cm; outer coats enclosing 1 or more bulbs, gray or brown, reticulate, cells rather coarse-meshed, open, fibrous; inner coats whitish, cells vertically elongate and regular or obscure. |
1–3, not clustered on primary rhizome, with 0–2 stalked basal bulbels, ovoid to globose, 1–1.6 × 0.8–1.4 cm; outer coats enclosing 1 or more bulbs, brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats pink or white, cells obscure, quadrate. |
||||||||
Leaves | persistent, usually green at anthesis, usually 3–5, sheathing less than 1/4 scape; blade solid, ± straight, flat, channeled, (6–)12–30 cm × 1–3(–5) mm, margins entire or denticulate. |
persistent, 1, basally sheathing, sheath not extending much above soil level; blade solid, terete, 8–22 cm × 1–2.5 mm. |
||||||||
Scape | persistent, solitary, erect, terete or somewhat 2-angled, 10–50 cm × 1–3 mm. |
persistent, solitary, erect, solid, terete, 5–17 cm × 1–3 mm. |
||||||||
Umbel | persistent, erect, compact, 10–25-flowered, hemispheric to globose, not producing bulbils, or 0–5-flowered, largely replaced by ovoid, acuminate bulbils; spathe bracts persistent, 2–3, mostly 1-veined, ovate to lanceolate, ± equal, apex acuminate, beakless. |
persistent, erect, ± compact, 5–50-flowered, hemispheric to globose, bulbils unknown; spathe bracts persistent, (2–)3, 3–6-veined, ovate to lanceolate, ± equal, apex acuminate. |
||||||||
Flowers | urceolate-campanulate, (4–)6–8(–10) mm; tepals erect or spreading, pink to white, ovate to lanceolate, ± equal, not withering in fruit and permanently investing fruit, or withering if fruit not produced, midribs papillose, becoming callous-keeled, margins often obscurely toothed, apex obtuse to acuminate; stamens included; anthers yellow; pollen yellow; ovary when present, inconspicuously crested; processes 6, central, low, distinct or connate in pairs across septa, ± erect, rounded, margins entire, becoming variously developed or obsolete in fruit; style linear, ± equaling stamens; stigma capitate, unlobed or obscurely lobed; pedicel becoming rigid and stiffly spreading in fruit, 8–13 mm. |
campanulate, 8–12 mm; tepals erect, pale pink to deep reddish purple, rarely white, lanceolate to ovate, ± equal or inner longer and narrower than outer, becoming rigid and ± keeled in fruit, margins entire, apex acute to acuminate; stamens included; anthers purple; pollen white or light yellow; ovary crested; processes 6, prominent, ± triangular, margins entire to notched or shallowly toothed; style linear, equaling stamens; stigma obscurely capitate, scarcely thickened, unlobed; pedicel 10–22 mm. |
||||||||
Seed | coat shining; cells each with minute, central papilla. |
coat dull or shining; cells minutely roughened. |
||||||||
Allium geyeri |
Allium atrorubens |
|||||||||
Distribution |
w North America
|
Intermountain w United States
|
||||||||
Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
||||||||
Key |
|
|
||||||||
Source | FNA vol. 26, p. 237. | FNA vol. 26, p. 248. | ||||||||
Parent taxa | Liliaceae > Allium | Liliaceae > Allium | ||||||||
Sibling taxa | ||||||||||
Subordinate taxa | ||||||||||
Name authority | S. Watson: Proc. Amer. Acad. Arts 14: 227. (1879) | S. Watson: Botany (Fortieth Parallel), 352, plate 38, figs. 4, 5. (1871) | ||||||||
Web links |
|