Allium crenulatum |
Allium kunthii |
|
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Olympic onion, scalloped onion |
Kunth's onion |
|
Bulbs | 1–6+, replaced annually with new bulbs borne terminally on rhizomes; rhizomes 1–2, secondary, short; parent bulb disappearing by anthesis except for still-functional roots and shriveled bulb coat, oblique-ovoid, 1–2 × 0.8–1.8 cm; outer coats not or only partially enclosing bulbs, brown to gray-brown, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows distal to roots, ± quadrate, without fibers; inner coats white, cells very obscurely quadrate or not visible. |
1–4+, rhizomes, if present, secondary, inconspicuous, 2 cm or less including renewal bulb, ± thick, terminated by new bulb, parent bulbs disappearing by anthesis except for still-functional roots and bulb coat, not basally clustered, ovoid, 1–2 × 0.8–1.5 cm; outer coats enclosing renewal bulbs or not, grayish or brownish, with or without obscure, delicate, cellular markings, sometimes striate, membranous, cells elongate, in regular vertical rows, without fibers; inner bulb coats whitish or pinkish, cells obscure, ± quadrate or rectangular and vertically elongate. |
Leaves | usually deciduous with scape, withering from tip at anthesis, (1–)2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, falcate, 10–33 cm × 1.5–10 mm, margins sometimes minutely denticulate. |
persistent, green at anthesis, 2–5, basally sheathing, sheaths not extended much above soil surface; blade solid, flat, channeled, 10–21 cm × 1–3 mm, margins and veins sometimes denticulate. |
Scape | usually forming abcission layer and deciduous with leaves after seeds mature, frequently breaking at this level after pressing, solitary, ± erect, solid, flattened, winged distally, wings frequently crenulate proximal to umbel, 5–15 cm × 1–5 mm. |
persistent, solitary, occasionally 2 or more produced successively from single bulb, erect, solid, terete, 15–30 cm × 1–3 mm. |
Umbel | persistent, erect, compact, 10–25-flowered, conic to hemispheric, bulbils unknown; spathe bracts persistent, 2, 8–10-veined, lanceolate, ± equal, apex acute. |
persistent, erect, loose, 5–20-flowered, conic, bulbils unknown; spathe bracts persistent, 2, 3–5-veined, lanceolate, apex acuminate. |
Flowers | campanulate, 6–12 mm; tepals erect, pinkish with deeper pink midveins, lanceolate, ± equal, becoming papery in fruit, margins entire, apex acute; stamens included; anthers yellow or purple; pollen yellow; ovary obscurely crested; processes 3, central, 2-lobed, minute, margins entire; style linear, equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 6–16 mm. |
stellate to campanulate, 4–8 mm; tepals ± spreading, white or pale pink (particularly on midribs), lanceolate, ± equal, becoming papery and withering in fruit, margins entire, apex acute to acuminate; stamens included; anthers yellow or purple; pollen yellow; ovary crestless; style linear, equaling stamens; stigma capitate, unlobed; pedicel unequal, 10–20 mm. |
Seed | coat shining; cells smooth. |
coat dull; cells ± smooth. |
2n | = 14. |
= 14. |
Allium crenulatum |
Allium kunthii |
|
Phenology | Flowering late May–Jul. | Flowering Jul–Sep. |
Habitat | Talus slopes and clay soils, including serpentine, on bald summits and ridges | Dry, rocky hills and mountains, usually in limestone soils |
Elevation | 600–2500 m (2000–8200 ft) | 700–3000 m (2300–9800 ft) |
Distribution |
OR; WA; BC
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AZ; NM; TX; Mexico
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Discussion | Allium crenulatum is known only from west of the Cascade Mountains from Vancouver Island to southwestern Oregon, in Jefferson Park, Oregon, and in the Wenatchee Mountains, central Washington. The disjunct populations of Allium crenulatum in western Oregon are markedly different among themselves and from the more typical representatives to the north. It has thus far proven impossible to draw meaningful taxonomic distinctions among these populations, hence we have followed historical precedent and have placed them all in a single, highly variable species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Allium longifolium (Kunth) Sprengel (1825), based on Schoenoprasum longifolium Kunth (1816), may be the same as A. kunthii; the type material is inadequate for definite determination. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 274. | FNA vol. 26, p. 257. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. cascadense, A. vancouverense, A. watsonii | A. scaposum, Schoenoprasum lineare |
Name authority | Wiegand: Bull. Torrey Bot. Club 26: 135, plate 355, fig. 1. (1899) | G. Don: Mem. Wern. Nat. Hist. Soc. 6: 82. (1827) |
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