Allium geyeri |
Allium abramsii |
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Geyer's onion |
Abrams' allium, Abrams' onion |
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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 stout, primary rhizome, ovoid to globose, 1–1.5 × 1–1.5 cm; outer coats enclosing 1 or more bulbs, gray to dark brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white, cells obscure, quadrate. |
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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, withering from tip by anthesis, 1, basally sheathing, sheath not extending much above soil surface; blade solid, terete, 12–30 cm × 1–3.5 mm. |
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Scape | persistent, solitary, erect, terete or somewhat 2-angled, 10–50 cm × 1–3 mm. |
persistent, solitary, erect, solid, terete, 6–15 cm × 1–3 mm. |
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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, 10–45-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2–3, 3–5-veined, lanceolate, ± equal, apex acuminate. |
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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 to urceolate, 8–15 mm; tepals erect, rose-purple, linear to lanceolate, unequal, becoming rigid and ± keeled in fruit, apex acute, ± spreading-reflexed at tip, inner tepals slightly shorter and wider than outer, outer margins denticulate on distal 1/4, inner margins denticulate to erose and crisped throughout; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, prominent, ± triangular, margins entire; style linear, equaling stamens; stigma capitate, 3-lobed, lobes slender, recurved; pedicel 4–12 mm. |
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Seed | coat shining; cells each with minute, central papilla. |
coat dull or shining; cells minutely roughened. |
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2n | = 14. |
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Allium geyeri |
Allium abramsii |
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Phenology | Flowering May–Jul. | |||||
Habitat | Granite sands in open coniferous forest | |||||
Elevation | 1400–2000 m (4600–6600 ft) | |||||
Distribution |
w North America
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CA |
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Allium abramsii is known only from the central Sierra Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 237. | FNA vol. 26. | ||||
Parent taxa | Liliaceae > Allium | Liliaceae > Allium | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | A. fimbriatum var. abramsii | |||||
Name authority | S. Watson: Proc. Amer. Acad. Arts 14: 227. (1879) | (Ownbey & Aase ex Traub) McNeal: Aliso 13: 417. (1992) | ||||
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