Allium acuminatum |
Allium drummondii |
|
---|---|---|
Hooker's onion, taper-tip onion |
Drummond onion, Drummond's 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, without basal bulbels, ovoid, 1–1.8 × 0.7–1.5 cm; outer coats enclosing 1 or more bulbs, brown, reticulate, cells fine-meshed, mostly closed in proximal 1/2 of bulb, fibrous; inner coats whitish or brownish, cells intricately contorted, walls usually not sinuous. |
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, green at anthesis, 2–5, sheathing; blade solid, flat, channeled, 10–30 cm × 1–3(–5) mm, margins entire. |
Scape | persistent, solitary, erect, solid, terete, 10–35 cm × 1–3 mm. |
persistent, solitary, erect, terete, 10–30 cm × 1–3 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 to ± loose, usually 10–25-flowered, hemispheric-globose, rarely replaced by bulbils; spathe bracts persistent, 2–3, 1-veined, 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. |
campanulate to ± stellate, 6–9 mm; tepals spreading, white, pink, or red, rarely greenish yellow, ovate to lanceolate, ± equal, becoming papery and rigid in fruit, margins entire, apex obtuse or acute, midribs somewhat thickened; stamens included; anthers yellow; pollen light yellow; ovary crestless; style linear, equaling stamens; stigma capitate, unlobed or obscurely lobed; pedicel 5–20 mm. |
Seed | coat dull or shining; cells minutely roughened. |
coat shining; cells each usually with minute, central papilla. |
2n | = 14. |
= 14, 28. |
Allium acuminatum |
Allium drummondii |
|
Phenology | Flowering Apr–Jul. | Flowering Mar–Jun. |
Habitat | Dry slopes and plains | Plains, hills, and prairies, particularly in limestone soils |
Elevation | 100–1500 m (300–4900 ft) | 0–1600 m (0–5200 ft) |
Distribution |
AZ; CA; CO; ID; NV; OR; UT; WA; WY; BC
|
AR; KS; NE; NM; OK; TX; Mexico
|
Source | FNA vol. 26, p. 261. | FNA vol. 26, p. 239. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. acuminatum var. cuspidatum, A. cuspidatum | A. helleri, A. nuttallii, A. reticulatum var. nuttallii |
Name authority | Hooker: Fl. Bor.-Amer. 2: 184, plate 196. (1838) | Regel: Trudy Imp. S.-Peterburgsk. Bot. Sada 3: 112. (1875) |
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