Allium madidum |
Allium triquetrum |
|
---|---|---|
mountain swamp onion, swamp onion |
three-corner leek, three-cornered leek, white flower onion |
|
Bulbs | 1–3, larger bulbs each usually with cluster of 10–30 easily detached bulbels to one side of base, not clustered on stout, primary rhizome, globose to ovoid, 1–1.6 × 0.8–1.5 cm; outer coats enclosing 1 or more bulbs, brownish, membranous, without fibers; inner coats white to pink; inner and outer coats frequently without obvious reticulations, these, when present, contorted. |
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. |
Leaves | persistent, green at anthesis, 2, basally sheathing, sheaths not extending much above soil surface; blade solid, flat or channeled, 10–25 cm × 1–4 mm, margins entire. |
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. |
Scape | persistent, solitary, erect, solid, ± terete, sometimes ridged, 10–20 cm × 1–2 mm. |
persistent, clustered, 1–4, erect, solid, sharply 3-angled, 10–40 cm × 1–10 mm. |
Umbel | persistent, erect, compact, 10–20-flowered, hemispheric, bulbils unknown; spathe bracts persistent, 2, 5–7-veined, ovate, ± equal, apex acuminate. |
persistent, lax, loose, 3–15-flowered, ± 1-sided, bulbils unknown; spathe bracts persistent, 1–2, 3-veined, narrowly lanceolate, ± equal, apex acute. |
Flowers | campanulate, 6–10 mm; tepals erect or ± spreading, white with prominent green or pink midveins, lanceolate, ± equal, becoming papery in fruit, margins entire, apex obtuse to acuminate, becoming involute at tip; stamens included; anthers white or yellow; pollen yellow; ovary crestless or obscurely crested; processes 3, low, central, rounded, minute; style linear, equaling stamens; stigma capitate, unlobed or slightly lobed; pedicel 5–12 mm. |
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. |
Seed(s) | coat dull; cells ± smooth. |
coat dull; cells minutely roughened. |
2n | = 28, 42. |
= 18. |
Allium madidum |
Allium triquetrum |
|
Phenology | Flowering May–Jul. | Flowering Mar–Apr. |
Habitat | Seasonally wet meadows | Disturbed sites |
Elevation | 1100–2000 m (3600–6600 ft) | 0–100 m (0–300 ft) |
Distribution |
ID; OR
|
CA; sw Europe [Introduced in North America]
|
Discussion | Allium madidum is found in the Blue Mountains, Oregon and in Idaho near Payette Lake and New Meadows. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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.) |
Source | FNA vol. 26, p. 255. | FNA vol. 26, p. 257. |
Parent taxa | Liliaceae > Allium | Liliaceae > Allium |
Sibling taxa | ||
Name authority | S. Watson: Proc. Amer. Acad. Arts 14: 228. (1879) | Linnaeus: Sp. Pl. 1: 300. (1753) |
Web links |