Allium columbianum |
Allium macrum |
|
---|---|---|
Columbia onion, Columbian onion |
rock 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. |
1–3, not clustered on stout, primary rhizome, globose to ovate, 0.6–2 × 0.5–1.5 cm; outer coats enclosing 1 or more bulbs, brownish, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white, lacking cellular reticulation. |
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. |
usually persistent, withering from tip at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat or channeled, ± falcate, 12–38 cm × 2–3 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, solid, ± terete, not expanded proximal to inflorescence, 9–32 cm × 0.5–4 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, loose, 10–20-flowered, globose, bulbils unknown; spathe bracts persistent, 2, 3–7-veined, lanceolate to lance-ovate, ± equal, apex abruptly acute. |
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, 5–7 mm; tepals spreading, white or pinkish with prominent red midveins, narrowly lanceolate, ± equal, becoming papery in fruit, margins entire, apex acuminate; stamens equaling tepals or exserted; anthers yellow; pollen yellow; ovary crested; processes 3, thick, obtuse, margins entire; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 5–20 mm. |
Seed | coat shining; cells smooth. |
coat dull; cells ± smooth. |
2n | = 14. |
= 14. |
Allium columbianum |
Allium macrum |
|
Phenology | Flowering May–Jul. | Flowering Apr–May. |
Habitat | Winter-wet, shallow soils on rock outcrops, or wet meadows | Barren, gravelly soils |
Elevation | 300–1100 m (1000–3600 ft) | 100–1400 m (300–4600 ft) |
Distribution |
ID; MT; WA
|
OR; WA
|
Source | FNA vol. 26. | FNA vol. 26, p. 267. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. douglasii var. columbianum | A. equicaeleste |
Name authority | (Ownbey & Mingrone) P. M. Peterson: Syst. Bot. 13: 211. (1988) | S. Watson: Proc. Amer. Acad. Arts 14: 233. (1879) |
Web links |