Allium fibrillum |
Allium passeyi |
|
---|---|---|
Blue Mountain onion, Cuddy Mountain onion, fringe onion |
passey's 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. |
2–3+, not rhizomatous, ovoid, 1–2 × 1.2–2 cm; outer coats enclosing 1 or more bulbs, light brown, reticulate, fibrous; inner coats whitish to light brown, cells vertically elongate and regular or obscure. |
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, sheathing; blade solid, flat, ± falcate, 10–20 cm × 3–6 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, terete or ± winged-angled, mostly 10–20 cm × 1–2.5 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, compact, 8–27-flowered, hemispheric-globose, bulbils unknown; spathe bracts persistent, 2–4, mostly 1-veined, ovate, ± equal, apex acuminate to caudate. |
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. |
campanulate, 7–9 mm; tepals erect, light pink, narrowly lanceolate to lance-ovate, becoming callous-keeled, persistent and permanently investing capsule, margins entire, apex acuminate, inner shorter and narrower than outer, outer strongly keeled and gibbous at base; stamens included; anthers yellow; pollen yellow; ovary obscurely crested; processes 6, central, ± erect, rounded, minute, to 1 mm, margins entire; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 10–18 mm. |
Seed | coat dull or shining; cells smooth. |
coat shining; cells smooth, each with minute, central papilla. |
2n | = 14. |
|
Allium fibrillum |
Allium passeyi |
|
Phenology | Flowering May–Jul. | Flowering Jun. |
Habitat | Moist, shallow soils | Shallow, stony, lithosolic soil over dolomitic limestone, hilltops |
Elevation | 300–2600 m (1000–8500 ft) | 1400–1600 m (4600–5200 ft) |
Distribution |
ID; MT; OR; WA
|
UT |
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.) |
Of conservation concern. Allium passeyi is known only from Box Elder County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 266. | FNA vol. 26, p. 242. |
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) | N. H. Holmgren & A. H. Holmgren: Brittonia 26: 309, figs. 1, 4. (1974) |
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