Allium fibrillum |
Allium membranaceum |
|
---|---|---|
Blue Mountain onion, Cuddy Mountain onion, fringe onion |
papery onion |
|
Bulbs | 1–5+, without cluster of basal bulbels, not clustered on stout primary rhizome, ± globose, 0.5–1.2 × 0.5–1 cm; outer coats enclosing 1 or more bulbs, brownish, membranous, reticulate; cells very fine, often obscure, narrow, ± transversely elongate, intricately contorted, without fibers; inner coats white to pink, cells obscure, transversely elongate, intricately contorted. |
1–3, producing bulbels in basal cluster around roots, ovoid, 1–1.6 × 0.9–1.4 cm; outer coats enclosing 1 or more bulbs, brown, membranous, obscurely cellular-reticulate, cells quadrate, walls very sinuous, without fibers; inner coats white or pink, cells obscure, quadrate. |
Leaves | usually persistent, withering from tip by anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, ± falcate, linear, channeled, 7–24 cm × 0.5–3 mm, margins entire. |
persistent, green at anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, 15–40 cm × 3–5 mm, margins entire. |
Scape | persistent, solitary, erect, solid, terete or slightly flattened to very narrowly winged, 3–15 cm × 0.5–2 mm. |
persistent, solitary, erect, solid, terete, 15–40 cm × 1–3 mm. |
Umbel | persistent, erect, compact, 10–20-flowered, hemispheric to globose, bulbils unknown; spathe bracts persistent, 2, 4–6-veined, ovate, ± equal, apex acuminate. |
persistent, erect, loose, 15–35-flowered, ± globose, bulbils unknown; spathe bracts persistent, 2, 4–6-veined, lanceolate, ± equal, apex acuminate, setaceous. |
Flowers | campanulate, 5–8 mm; tepals erect, white with prominent greenish or pink midribs, lanceolate, ± equal, becoming papery in fruit, margins entire, apex obtuse to acuminate, ± involute at tip; stamens included; anthers yellow; pollen yellow; ovary crestless or obscurely crested; processes 3, low, rounded, margins entire; style linear, equaling stamens; stigma capitate, unlobed; pedicel 3–10 mm. |
stellate, 7–12 mm; tepals spreading, pink or less commonly white, ovate to elliptic, ± equal, becoming papery in fruit, not carinate, margins entire, apex acute to acuminate, not involute; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, prominent, central, triangular, short, margins minutely denticulate; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 10–20 mm. |
Seed | coat dull or shining; cells smooth. |
coat dull; cells each with minute, central papilla. |
2n | = 14. |
= 14. |
Allium fibrillum |
Allium membranaceum |
|
Phenology | Flowering May–Jul. | Flowering May–Jun. |
Habitat | Moist, shallow soils | Wooded, shady slopes |
Elevation | 300–2600 m (1000–8500 ft) | 200–1400 m (700–4600 ft) |
Distribution |
ID; MT; OR; WA
|
CA |
Discussion | Allium fibrillum closely resembles A. madidum but does not have a cluster of basal bulbels. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Allium membranaceum is found in the foothills of the northern and central Sierra Nevada. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 266. | FNA vol. 26, p. 256. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. collinum | |
Name authority | M. E. Jones ex Abrams: in L. Abrams and R. S. Ferris, Ill. Fl. Pacific States 1: 393. (1923) | Ownbey ex Traub: Pl. Life 28: 63. (1972) |
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