Allium brandegeei |
Allium anceps |
|
---|---|---|
Brandegee's onion |
Kellogg's onion, twin leaf onion, two-edge onion |
|
Bulbs | 1–5, not clustered on stout, primary rhizome, ovoid to globose, 0.7–1.5 × 0.6–1.4 cm; outer coats enclosing 1 or more bulbs, brown to grayish brown, membranous, usually distinctly cellular-reticulate, cells isodiametric or ± narrowly hexagonal, transversely elongate, without fibers; inner coats red to purple or white, cells obscure, quadrate to ± transversely elongate. |
1–5, not clustered on stout primary rhizome, ovoid, 1.5–2 × 1.2–2 cm; outer coats enclosing 1 or more bulbs, brown to yellow-brown, membranous, ± prominently cellular-reticulate, cells in regular vertical rows, narrowly rectangular, transversely elongate, without fibers; inner coats white, cells obscure, transversely elongate. |
Leaves | usually persistent, green at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat or channeled, ± falcate, 8–27 cm × 1–3 mm, margins entire. |
usually deciduous with scape, withering from tip at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, falcate, 7–26 cm × 4–6 mm, margins entire. |
Scape | persistent, solitary, erect, solid, terete, 3–10(–20) cm × 1–3 mm. |
usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, erect, solid, flattened, narrowly winged, 10–15 cm × 1–3 mm. |
Umbel | persistent, erect, compact, 8–25-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 7–10-veined, ovate, ± equal, apex acuminate. |
persistent, erect, ± compact, 15–35-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 10–13-veined, ovate, ± equal, apex acute. |
Flowers | campanulate, 5–8 mm; tepals erect, white with prominent green to purplish midvein, lanceolate to elliptic, ± equal, becoming involute at tip and rigid in fruit, margins entire, apex obtuse to acuminate; stamens included; anthers yellow; pollen yellow or white; ovary crestless or obscurely crested; processes 3, low, rounded, central, margins entire; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 5–15 mm. |
stellate, 8–12 mm; tepals spreading, light pink with diffuse greenish midveins, linear-lanceolate, ± equal, papery, withering in fruit, margins entire, apex acute; stamens ± equaling tepals; anthers yellow; pollen yellow; ovary crested; processes 6, central, rounded, minute, margins entire; style linear, 0.5 times stamens; stigma capitate, scarcely thickened, unlobed; pedicel 15–30 mm. |
Seed | coat shining; cells smooth. |
coats dull; cells smooth. |
2n | = 14. |
= 14. |
Allium brandegeei |
Allium anceps |
|
Phenology | Flowering late Apr–Jul. | Flowering Apr–May. |
Habitat | Sandy, rocky soil | Heavy, generally barren, clay soils |
Elevation | 1200–3300 m (3900–10800 ft) | 1200–1600 m (3900–5200 ft) |
Distribution |
CO; ID; MT; NV; OR; UT; WY
|
CA; ID; NV; OR
|
Source | FNA vol. 26, p. 266. | FNA vol. 26, p. 270. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. diehlii, A. minimum, A. tribracteatum var. diehlii | |
Name authority | S. Watson: Proc. Amer. Acad. Arts 17: 380. (1882) | Kellogg: Proc. Calif. Acad. Sci. 2: 109. (1863) |
Web links |