Allium anceps |
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Kellogg's onion, twin leaf onion, two-edge onion |
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Bulbs | 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 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 | 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, 15–35-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 10–13-veined, ovate, ± equal, apex acute. |
Flowers | 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 | coats dull; cells smooth. |
2n | = 14. |
Allium anceps |
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Phenology | Flowering Apr–May. |
Habitat | Heavy, generally barren, clay soils |
Elevation | 1200–1600 m (3900–5200 ft) |
Distribution |
CA; ID; NV; OR
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Source | FNA vol. 26, p. 270. |
Parent taxa | Liliaceae > Allium |
Sibling taxa | |
Name authority | Kellogg: Proc. Calif. Acad. Sci. 2: 109. (1863) |
Web links |