Allium triquetrum |
Allium diabolense |
|
---|---|---|
three-corner leek, three-cornered leek, white flower onion |
Diablo onion, serpentine onion |
|
Bulbs | 5–20+, not clustered on stout primary rhizome, rhizomes absent, increase bulbs absent or ± equaling parent bulbs, never appearing as basal cluster, ovoid, 1–2 × 1–2 cm; outer coats enclosing renewal bulbs, ± translucent, yellow-brown, obscurely cellular-reticulate, thin, membranous, meshes delicate, cells vertically elongate, contorted, without fibers; inner coats white, cells obscure, quadrate, or not visible. |
1–3, not clustered on stout, primary rhizomes, ovoid to ± globose, 1–1.6 × 0.9–1.6 cm; outer coats enclosing 1 or more bulbs, reddish brown, membranous, lacking cellular reticulation or cells arranged in 2–3 rows proximal to roots, ± quadrate, without fibers; inner coats pale brown to white, cells obscure, quadrate. |
Leaves | persistent, green at anthesis, 2–3, basally sheathing, sheaths not extending much above soil surface; blade solid, flat, not falcate, ± carinate, 15–50 cm × 3–15 mm, margins entire. |
persistent, withering from apex by anthesis, 1, basally sheathing, sheath not extending much above soil surface; blade solid, terete, 10–30(–40) cm × 1–3 mm. |
Scape | persistent, clustered, 1–4, erect, solid, sharply 3-angled, 10–40 cm × 1–10 mm. |
persistent, solitary, erect, solid, terete, 7–20(–30) cm × 1–3 mm. |
Umbel | persistent, lax, loose, 3–15-flowered, ± 1-sided, bulbils unknown; spathe bracts persistent, 1–2, 3-veined, narrowly lanceolate, ± equal, apex acute. |
persistent, erect, compact to ± loose, 10–50-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2–3, 8–10-veined, lanceolate, ± equal, apex acuminate to long-acuminate. |
Flowers | becoming pendent, campanulate, 10–18 mm; tepals erect to spreading, white with prominent green midrib, lanceolate, ± equal, becoming membranous in fruit, margins entire, apex acute; stamens included; anthers yellow; pollen yellow; ovary crestless; style linear, ± equaling stamens; stigma capitate, scarcely thickened, unlobed; pedicel 15–25 mm. |
campanulate, 6–10 mm; tepals erect, white or tinged pink with dark red midveins, lanceolate to ovate, ± equal, becoming papery in fruit, margins entire, apex obtuse to acute or apiculate, not conspicuously recurved at tip; stamens included; anthers yellow; pollen yellow; ovary crested; processes 6, prominent, ± triangular, margins erose to ± laciniate; style linear, equaling stamens; stigma capitate, 3-lobed, lobes slender, recurved; pedicel 7–20 mm. |
Seed(s) | coat dull; cells minutely roughened. |
coat dull; cells minutely roughened. |
2n | = 18. |
= 14. |
Allium triquetrum |
Allium diabolense |
|
Phenology | Flowering Mar–Apr. | Flowering mid Apr–Jun. |
Habitat | Disturbed sites | Serpentine clay soils |
Elevation | 0–100 m (0–300 ft) | 500–1500 m (1600–4900 ft) |
Distribution |
CA; sw Europe [Introduced in North America]
|
CA |
Discussion | Allium triquetrum is a garden escape, introduced from southwestern Europe, and is potentially a noxious weed. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Allium diabolense is known only from the southern Coast Ranges and western Transverse Ranges. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 26, p. 257. | FNA vol. 26. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Synonyms | A. fimbriatum var. diabolense | |
Name authority | Linnaeus: Sp. Pl. 1: 300. (1753) | (Ownbey & Aase ex Traub) McNeal: Aliso 13: 425. (1992) |
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