Allium constrictum |
Allium validum |
|
---|---|---|
Grand Coulee onion |
Pacific Mountain onion, Pacific onion, Pacific swamp onion, swamp onion, wild onion |
|
Bulbs | 1–5+, not clustered on stout, primary rhizome, ovoid, 1–1.5 × 0.8–1.4 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, cells obscure, quadrate. |
2–20+, clustered on thick, iris-like rhizome, elongate, 2–5 × 1–2.5 cm; outer coats enclosing 1 or more bulbs, brownish, membranous, minutely striate, cells in regular vertical rows, elongate, not fibrous-reticulate, fibers persistent, parallel, few, coarse; inner coats reddish purple or whitish, minutely striate, cells in regular vertical rows, elongate. |
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 × 1–3(–5) mm, margins entire. |
persistent, green at anthesis, 3–6, sheathing basally, sheaths not extending much above soil surface; blade solid, flat, 20–70(–80) cm × 4–15 mm, margins entire. |
Scape | persistent, solitary, erect, solid, terete, enlarged apically but distinctly constricted just proximal to inflorescence, 15–20 cm × 1.5–4 mm. |
persistent, solitary, erect, solid, flattened and narrowly winged distally, 30–70 cm × 2–7 mm. |
Umbel | persistent, erect, compact, 15–30-flowered, hemispheric to globose, bulbils unknown; spathe bracts persistent, 3, 5–7-veined, ovate, ± equal, apex acute. |
persistent, erect, compact, 15–30-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 3–5-veined, broadly ovate, ± equal, apex acute. |
Flowers | ± stellate, 7–8 mm; tepals spreading, light pink to rose with prominent green or reddish midribs, narrowly lanceolate, ± equal, becoming papery in fruit, margins entire, apex acuminate; stamens exserted; anthers blue-gray; pollen light blue to gray; ovary crested; processes 6, 2 per lobe, low, rounded, margins entire; style exserted, linear; stigma capitate, unlobed; pedicel 10–20 mm. |
± campanulate, 8–10 mm; tepals erect to ± spreading, pink, narrowly lanceolate, ± equal, withering in fruit, margins entire, apex acuminate, midribs scarcely thickened; stamens exerted; anthers yellow or purple; pollen yellow; ovary crestless; style exserted, linear, longer than stamens; stigma capitate, unlobed; pedicel 10–15 mm, elongating and becoming stout in fruit. |
Seed | coat shining; cells smooth. |
coat dull; cells smooth or minutely roughened. |
2n | = 14. |
= 28, 56. |
Allium constrictum |
Allium validum |
|
Phenology | Flowering May–Jul. | Flowering Jun–Aug. |
Habitat | Shallow, lithosolic soils, often dry and sandy | Swampy meadows in mountains |
Elevation | 300–500 m (1000–1600 ft) | 1500–2900 m (4900–9500 ft) |
Distribution |
WA
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CA; ID; NV; OR; WA; BC
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Discussion | Of conservation concern. Allium constrictum is known only from Douglas, Grant, and Lincoln counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Allium validum is a Cascade-Sierran species extending east to northeastern Nevada, eastern Oregon, and western Idaho. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26. | FNA vol. 26, p. 245. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. douglasii var. constrictum | |
Name authority | (Ownbey & Mingrone) P. M. Peterson: Syst. Bot. 13: 211. (1988) | S. Watson: Botany (Fortieth Parallel), 350. (1871) |
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