Allium constrictum |
Allium speculae |
|
---|---|---|
Grand Coulee onion |
little river canyon 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. |
1–5+, not rhizomatous, ovoid, 1–5 × 1–2 cm; outer coats usually enclosing single bulb, grayish or brownish, reticulate, cells very fine-meshed, open; inner coats whitish, cells vertically elongate, regular. |
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+, sheathing; blade solid, flat, channeled, 10–30 cm × 1–2 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 (sometimes 2 in cultivated plants), erect, terete, 20–30 cm × 1–3 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, 10–15-flowered, hemispheric-globose, bulbels unknown; spathe bracts persistent, 3, usually 1-veined, lanceolate, ± equal, apex long-acuminate. |
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, 5–6 mm; tepals widely spreading, pinkish, elliptic, ± equal, remaining thin and withering over ovary, margins entire, apex obtuse, involute at tip; stamens included; anthers light yellow; pollen white to light yellow; ovary crested; processes 6, central, horizontally spreading, flattened, triangular, margins entire; style linear, equaling stamens; stigma capitate, obscurely 3-lobed; pedicel 9–20 mm. |
Seed | coat shining; cells smooth. |
coat shining; cells each with minute, central papilla. |
2n | = 14. |
= 14. |
Allium constrictum |
Allium speculae |
|
Phenology | Flowering May–Jul. | Flowering Jun. |
Habitat | Shallow, lithosolic soils, often dry and sandy | On gneiss “flat-rocks” and sandy soil of Piedmont |
Elevation | 300–500 m (1000–1600 ft) | 300 m (1000 ft) |
Distribution |
WA
|
AL; GA |
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.) |
Of conservation concern. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26. | FNA vol. 26, p. 242. |
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) | Ownbey & Aase: Rhodora 61: 70. (1959) |
Web links |