Allium tricoccum |
Allium brevistylum |
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ramp, small white leek, wild leek |
short-style onion |
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Bulbs | 2–6, usually borne on short rhizome, ovoid-conic, 1.5–6 × 1.5–3 cm; outer coats enclosing 1 or more bulbs, brownish to grayish, reticulate, cells finely fibrous; inner coat white, obscurely cellular, cells irregularly arranged. |
2–4, terminating thick, iris-like rhizome, elongate, 2–3 × 0.6–1 cm; outer coats enclosing single bulb, grayish or brownish, membranous, minutely striate, cells in parallel vertical rows, narrow, elongate, not fibrous-reticulate, fibers persistent, parallel, few, coarse; inner coats whitish, cells narrowly vertically elongate. |
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Leaves | ephemeral, usually absent at anthesis, 2–3, basal; blade solid, flat, elliptic to elliptic-lanceolate, (15–)20–30(–40) cm × 15–90 mm, tapering to long, slender petiole, margins entire. |
persistent, green at anthesis, 2–5, basally sheathing, sheaths not extending much above soil level; blade solid, flat, 10–40 cm × 2–8 mm, margins entire. |
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Scape | persistent, solitary, flexuous distally, terete, 10–40 cm × 2–4 mm. |
persistent, solitary, erect, solid, flattened and narrowly winged distally, 20–60 cm × 1.5–4 mm. |
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Umbel | persistent, erect, loose, (6–)30–50-flowered, obconic to ± hemispheric, bulbils unknown; spathe bracts persistent, 2, ± 3-veined, lanceolate to lance-ovate, ± equal, apex acute, beakless. |
persistent, erect, loose, 7–20-flowered, subhemispheric, bulbils unknown; spathe bracts persistent, 2, 3–5-veined, ovate, ± equal, apex acute. |
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Flowers | campanulate, 4–7 mm; tepals erect, white to cream or yellowish, oblong to ovate, ± equal, not withering in fruit, margins entire, apex obtuse; stamens ± equaling tepals; anthers white to light yellow; pollen white; ovary crestless; style included, linear, shorter than stamens; stigma capitate, scarcely thickened, unlobed; pedicel 10–20 mm. |
narrowly urceolate, 10–13 mm; tepals erect, pink, lanceolate, ± equal, withering in fruit, margins entire, apex acuminate, midribs somewhat thickened; stamens included, ca. 1/2 as long as tepals; anthers yellow; pollen light yellow; ovary crestless; style linear, equaling stamens; stigma capitate, distinctly 3-lobed; pedicel 8–35 mm, elongating and becoming stout and curved in fruit. |
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Seed | coat shining; cells smooth. |
coat dull or shining; cells each with minute, central papilla, or obscurely and minutely roughened. |
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2n | = 14. |
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Allium tricoccum |
Allium brevistylum |
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Phenology | Flowering Jun–Aug. | |||||
Habitat | Swampy meadows and along streams, rarely on wooded slopes | |||||
Elevation | 2200–3400 m (7200–11200 ft) | |||||
Distribution |
e North America
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CO; ID; MT; NM; UT; WY
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Discussion | Varieties 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Allium brevistylum is found only in the Rocky Mountains. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 26, p. 234. | FNA vol. 26, p. 246. | ||||
Parent taxa | Liliaceae > Allium | Liliaceae > Allium | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Solander: in W. Aiton, Hort. Kew 1: 428. (1789) | S. Watson: Botany (Fortieth Parallel), 350. (1871) | ||||
Web links |