Allium nevii |
Allium dictuon |
|
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Nevius' garlic, Nevius' onion |
Blue Mountain onion |
|
Bulbs | 1–5+, not clustered on stout, primary rhizome, ovoid, 1–2 × 1–2 cm; outer coats enclosing 1 or more bulbs, light brown, membranous, ± reticulate, cells quadrate to polygonal, vertically oblong, without fibers; inner coats white or pink, cells obscure, quadrate. |
usually solitary, forming rhizomes; rhizomes 1–2, terminated by 1–3 new bulbs, short, slender; parent bulb disappearing by anthesis except for still-functional roots and bulb coats, not basally clustered, oblique-ovoid, 1–1.5 × 0.9–1.5 cm; outer coats not enclosing bulbs, pale brown, prominently cellular-reticulate, membranous, cells polygonal to oblong, walls thick, obscurely sinuous, without fibers; inner coats white, cells ± transversely elongate, intricately contorted. |
Leaves | usually persistent, withering from tip at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat or ± channeled, falcate, 12–25 cm × 2–3 mm, margins entire. |
persistent, withering from tip by anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, subterete to ± channeled, 10–28 cm × 1–2 mm, margins entire. |
Scape | persistent, 1–3, erect, solid, terete or somewhat flattened, 2-edged, not expanded proximal to inflorescence, 15–30 cm × 1–3 mm. |
persistent, solitary, erect, solid, terete, 20–40 cm × 1–3 mm. |
Umbel | persistent, erect, compact, 10–30-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 5–6-veined, ovate, ± equal, apex acute. |
persistent, erect, loose, 10–25-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 3-veined, lanceolate to lance-ovate, ± equal, apex acuminate. |
Flowers | campanulate to substellate, 6–8 mm; tepals spreading, rose-colored, lanceolate, ± equal, becoming papery in fruit, margins entire, apex acuminate; stamens ± equaling tepals, or exserted; anthers blue-gray; pollen light blue or gray; ovary distinctly crested; processes 6, 2 per lobe, low, rounded, margins entire; style exserted, linear; stigma capitate, unlobed; pedicel 8–12 mm. |
campanulate, 11–16 mm; tepals erect, pink to rose-purple, lanceolate, unequal, outer tepal longer and wider than inner, becoming rigid and keeled in fruit, margins finely denticulate (inner tepal more prominently so), apex acute to narrowly obtuse, becoming involute and appearing long-acuminate, flaring toward tips; stamens included; anthers yellow; pollen yellow; ovary crested; processes 3, central, 2-lobed, rounded, minute, margins entire; style linear, equaling stamens; stigma capitate, scarcely thickened, obscurely 3-lobed; pedicel 10–25 mm. |
Seed | coat dull; cells smooth. |
coat shining; cells minutely roughened. |
2n | = 14. |
= 14. |
Allium nevii |
Allium dictuon |
|
Phenology | Flowering May–Jul. | Flowering Jun–Jul. |
Habitat | Heavy, rocky soils, wet meadows, or along streams | Rocky, sandy, basaltic soil |
Elevation | 30–1900 m (100–6200 ft) | 1500 m (4900 ft) |
Distribution |
OR; WA
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WA
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Discussion | Of conservation concern. Allium dictuon is known only from the vicinity of Weller’s Butte, Blue Mountains. It differs from A. acuminatum by its rhizomatous habit, in which it resembles A. bolanderi, and in the cellular pattern on the inner bulb coats. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 26, p. 267. | FNA vol. 26, p. 261. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. douglasii var. nevii | |
Name authority | S. Watson: Proc. Amer. Acad. Arts 14: 231. (1879) | H. St. John: Proc. Biol. Soc. Wash. 50: 3, fig. 1. (1937) |
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