Allium columbianum |
Allium macropetalum |
|
---|---|---|
Columbia onion, Columbian onion |
Arizona onion, largeflower onion |
|
Bulbs | 1–5+, not clustered on stout, primary rhizome, ovoid, 1–1.5 × 0.8–1.4 cm; outer bulb coats brownish or grayish, enclosing 1 or more bulbs, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white to pink, cells obscure, ± quadrate. |
1–5, without basal bulbels, ovoid, 1.5–2.5 × 1–2 cm; outer coats enclosing 1 or more bulbs, brown, reticulate, cells usually coarse-meshed, open, fibrous; inner coats whitish, cells vertically elongate and regular or obscure. |
Leaves | usually persistent, green at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, broadly channeled, ± falcate, 10–35 cm × (2–)5–8 mm, margins entire. |
persistent, green at anthesis, 2, sheathing; blade solid, channeled, semiterete, 8–20 cm × 1–3 mm, margins entire. |
Scape | persistent, solitary, erect, solid, terete, enlarged proximal to inflorescence, (10–)20–30(–40) cm × 1.5–4 mm. |
persistent, solitary, erect, terete or ± 4-angled, 5–20 cm × 1–4 mm. |
Umbel | persistent, erect, compact, 25–50-flowered, hemispheric to globose, bulbils unknown; spathe bracts persistent, 3, 5–7-veined, ovate, ± equal, apex acute. |
persistent, erect, compact to loose, 10–20-flowered, hemispheric to globose, bulbils unknown; spathe bracts persistent, 2–3, 3–5-veined, ovate to lanceolate, ± equal, apex acute to short-acuminate. |
Flowers | ± stellate, (6–)7–8(–10) mm; tepals spreading, light pink to purple with prominent green midribs, narrowly lanceolate, ± equal, becoming papery in fruit, margins entire, apex acuminate; stamens equaling or longer than tepals; anthers blue-gray; pollen light blue to gray; ovary crested; processes 6, 2 per lobe, low, rounded, margins entire; style exserted, linear; stigma capitate, scarcely thickened, unlobed; pedicel 10–20 mm. |
campanulate, 8–12 mm; tepals spreading, pink with deeper pink or reddish midveins, lanceolate, ± equal, becoming papery in fruit, not investing capsule, margins entire, apex obtuse to acuminate, midrib scarcely thickened; stamens included; anthers yellow or purple; pollen yellow; ovary usually conspicuously crested; processes 6, central, usually connate in pairs across septa, ± erect, flattened, triangular, to 2 mm, margins entire, mostly well developed in fruit; style linear, equaling stamens; stigma capitate, unlobed or obscurely lobed; pedicel 5–20 mm. |
Seed | coat shining; cells smooth. |
coat shining; cells smooth, without central papillae. |
2n | = 14. |
= 14. |
Allium columbianum |
Allium macropetalum |
|
Phenology | Flowering May–Jul. | Flowering late Mar–Jun. |
Habitat | Winter-wet, shallow soils on rock outcrops, or wet meadows | Desert plains and hills |
Elevation | 300–1100 m (1000–3600 ft) | 300–2500 m (1000–8200 ft) |
Distribution |
ID; MT; WA
|
AZ; CO; NM; TX; UT
|
Source | FNA vol. 26. | FNA vol. 26. |
Parent taxa | ||
Sibling taxa | ||
Synonyms | A. douglasii var. columbianum | A. deserticola, A. reticulatum var. deserticola |
Name authority | (Ownbey & Mingrone) P. M. Peterson: Syst. Bot. 13: 211. (1988) | Rydberg: Bull. Torrey Bot. Club 31: 401. (1904) |
Web links |