Allium acuminatum |
Allium parvum |
|
---|---|---|
Hooker's onion, taper-tip onion |
dwarf onion, small 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. |
1–5+, not clustered on stout primary rhizome, rhizomes absent, renewal bulbs formed within coats of parent bulb, ovoid to ± globose, 1–2 × 0.7–2 cm; outer coats enclosing 1 or more bulbs, gray to grayish brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white or pinkish, cells obscure, ± 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. |
usually deciduous with scape, withering from tip at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, ± falcate, 8–15 cm × 2–8 mm, margins entire. |
Scape | persistent, solitary, erect, solid, terete, 10–35 cm × 1–3 mm. |
usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, erect, solid, flattened, frequently ± winged distally, or, in smaller specimens, ± terete, 3–12 cm × 0.5–2 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, 5–30-flowered, hemispheric to conic, bulbils unknown; spathe bracts persistent, 2, 12–14-veined, ovate, ± equal, apex acute to 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. |
narrowly campanulate, 6–9 mm; tepals erect, ± spreading toward tips, white or tinged with pink, with broad, dark, reddish purple or brown midvein, oblong to elliptic, unequal, outer longer, wider than inner, becoming papery and investing capsule, not carinate in fruit, margins entire, apex obtuse to ± acute; stamens included; anthers purple or yellow; pollen yellow; ovary obscurely crested; processes 3, central, low, rounded, margins entire; style linear, ± equaling tepals; stigma capitate, scarcely thickened, unlobed or obscurely 3-lobed; pedicel 3–12 mm. |
Seed | coat dull or shining; cells minutely roughened. |
coat dull; cells smooth. |
2n | = 14. |
= 14. |
Allium acuminatum |
Allium parvum |
|
Phenology | Flowering Apr–Jul. | Flowering late Apr–Jun. |
Habitat | Dry slopes and plains | Rocky, clay slopes and talus |
Elevation | 100–1500 m (300–4900 ft) | 1200–2800 m (3900–9200 ft) |
Distribution |
AZ; CA; CO; ID; NV; OR; UT; WA; WY; BC
|
CA; ID; NV; OR; UT
|
Source | FNA vol. 26, p. 261. | FNA vol. 26. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. acuminatum var. cuspidatum, A. cuspidatum | A. modocense, A. pleianthum var. particolor, A. tribracteatum var. andersonii, A. tribracteatum var. parvum |
Name authority | Hooker: Fl. Bor.-Amer. 2: 184, plate 196. (1838) | Kellogg: Proc. Calif. Acad. Sci. 3: 54, fig. 13. (1863) |
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