Allium acuminatum |
Allium monticola |
|
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Hooker's onion, taper-tip onion |
San Bernardino Mountain onion |
|
Bulbs | 1–12+, not basally clustered, not forming rhizomes, ovoid to ± globose, 0.8–1.6 × 0.9–1.6 cm; outer coats enclosing 1 or more renewal bulbs, ± yellow-brown, prominently cellular-reticulate, membranous, cells square or polygonal, walls thick, obscurely sinuous, without fibers; inner coats white, cells obscure, ± quadrate. |
1–3+, generally with 1–2 stalked, basal bulbels, not clustered on stout, primary rhizome, ovoid, 1–2.2 × 1.2–2 cm; outer bulb coats enclosing 1 or more bulbs, gray-brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white to pinkish, cells obscurely quadrate. |
Leaves | persistent, withering from tip by anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, subterete or ± channeled, 7–30 cm × 1–3 mm, margins entire. |
persistent, withering just at tip by anthesis, 1, basally sheathing, sheath not extending much above soil surface; blade solid, terete, 9–35 cm × 2–4 mm. |
Scape | persistent, solitary, erect, solid, terete, 10–35 cm × 1–3 mm. |
persistent, solitary, erect, solid, terete, 6–25 cm × 2–4 mm. |
Umbel | persistent, erect, loose, 10–40-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 3–7-veined, lanceolate to ovate, ± equal, apex acuminate. |
persistent, erect, compact, 8–25-flowered, conic, bulbils unknown; spathe bracts persistent, 2–3, 5–7-veined, broadly ovate, ± equal, apex acuminate. |
Flowers | campanulate, 8–15 mm; tepals erect, pink to rose-purple, or white, lanceolate to lance-ovate, unequal, becoming rigid and keeled in fruit, margins finely denticulate (inner tepal more prominently so), apex acuminate, outer tepal longer and wider than inner, spreading to recurved at tip, inner tepal with strongly recurved tips; stamens included; anthers yellow; pollen yellow; ovary crested; processes 3, central, 2-lobed, rounded, minute, margins entire; style linear, equaling stamens; stigma capitate, scarcely thickened, obscurely 3-lobed; pedicel 6–25 mm. |
urceolate, 12–19 mm; tepals erect, rose-purple distally, often white proximally, lance-linear to lance-ovate, ± equal, becoming rigid in fruit, margins entire, apex long-acuminate, flaring at tip; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, ± prominent, ± triangular to ± linear, margins entire; style linear, ± equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 5–12 mm. |
Seed | coat dull or shining; cells minutely roughened. |
coat dull; cells minutely roughened. |
2n | = 14. |
= 14. |
Allium acuminatum |
Allium monticola |
|
Phenology | Flowering Apr–Jul. | Flowering late May–Jul. |
Habitat | Dry slopes and plains | Loose rock and talus slopes, alpine ridges and talus |
Elevation | 100–1500 m (300–4900 ft) | 1400–3200 m (4600–10500 ft) |
Distribution |
AZ; CA; CO; ID; NV; OR; UT; WA; WY; BC
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CA
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Discussion | Allium monticola is known only from the southern California mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 26, p. 261. | FNA vol. 26, p. 250. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. acuminatum var. cuspidatum, A. cuspidatum | A. monticola var. keckii, A. parishii var. keckii, A. peirsonii |
Name authority | Hooker: Fl. Bor.-Amer. 2: 184, plate 196. (1838) | Davidson: Bull. S. Calif. Acad. Sci. 20: 51. (1921) |
Web links |