Allium rhizomatum |
Allium validum |
|
---|---|---|
spreading wild onion |
Pacific Mountain onion, Pacific onion, Pacific swamp onion, swamp onion, wild onion |
|
Bulbs | solitary, not basally clustered, replaced annually by new bulbs borne terminally on rhizome; rhizomes 1–3, conspicuous, slender, 2–3 cm, scaly; parent bulbs persisting, often not collected, oblique-ovoid, 1–2.5 × 1 cm; outer coats enclosing parent bulbs, grayish, lacking cellular reticulation, membranous, without fibers; inner coats white or hyaline, 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 | persistent, green at anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, not falcate, 20–35 cm × 2–3 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 | solitary, erect, solid, terete, 20–30 cm × 1–3 mm. |
persistent, solitary, erect, solid, flattened and narrowly winged distally, 30–70 cm × 2–7 mm. |
Umbel | persistent, erect, loose, 5–15(–22)-flowered, globose to hemispheric, bulbils unknown; spathe bracts persistent, 2, 3-veined, ovate to lance-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, 6–9 mm; tepals erect, pink with purplish or pinkish midveins, oblong to lanceolate, slightly carinate basally, ± equal, becoming papery in fruit, margins entire, apex acute to acuminate; stamens included; anthers yellow or pink; pollen yellow or white; ovary crestless, 3-grooved with thickened ridge on either side of groove; style linear, shorter than stamens; stigma capitate, scarcely thickened, unlobed; pedicel 10–20(–50) 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 | = 28. |
= 28, 56. |
Allium rhizomatum |
Allium validum |
|
Phenology | Flowering Jul–Sep. | Flowering Jun–Aug. |
Habitat | Dry, usually grassy areas | Swampy meadows in mountains |
Elevation | 1200–2200 m (3900–7200 ft) | 1500–2900 m (4900–9500 ft) |
Distribution |
AZ; NM; TX; Mexico
|
CA; ID; NV; OR; WA; BC
|
Discussion | Allium rhizomatum has often been included within the Mexican species A. glandulosum. This reduction is unwarranted. The perianth of A. rhizomatum is pale, with the color mainly confined to the midribs. Additionally, the species can be distinguished by its 3-lobed, apically 3-grooved ovary and lack of sepal glands. Allium glandulosum has a red perianth, an apically rounded ovary, and sepal glands. The nectar produced from these glands does not show in herbarium specimens. (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 | ||
Name authority | Wooton & Standley: Contr. U.S. Natl. Herb. 16: 114. (1913) | S. Watson: Botany (Fortieth Parallel), 350. (1871) |
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