Allium nevii |
Allium triquetrum |
|
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Nevius' onion |
three-corner leek |
|
Bulbs | 1–5+; ovoid; outer coats enclosing 1 or more bulbs, membranous; more or less reticulate; cells quadrate to polygonal, vertically oblong; without fibers. |
5–20+; increase bulbs absent or more or less equaling parent bulbs, never appearing as basal cluster; ovoid; outer coats enclosing renewal bulbs; more or less translucent, obscurely cellular-reticulate; thin, membranous; meshes delicate; cells vertically elongate, contorted; without fibers. |
Leaves | usually persistent, withering from tip at anthesis, 2; blades solid; flat or more or less channeled, falcate, 12–25 cm × 2–3 mm. |
persistent, green at anthesis, 2–3; blades solid; flat, not falcate; more or less keeled, 15–50 cm × 3–15 mm; margins entire. |
Scapes | persistent, 1–3; erect; solid; terete or somewhat flattened, 2-edged, not expanded proximal to inflorescence, 15–30 cm × 1–3 mm. |
persistent, clustered; erect; solid, sharply 3-angled, 10–40 cm × 1–10 mm. |
Umbels | persistent; erect; compact, 10–30-flowered, hemispheric; pedicels 8–12 mm; spathe bracts 2. |
persistent; lax; loose, 3–15-flowered; more or less 1-sided; pedicels 15–25 mm; spathe bracts 1–2. |
Flowers | 6–8 mm; tepals spreading, lanceolate; more or less equal; rose-colored; margins entire; apex acuminate; stamens more or less equaling tepals, or exserted; ovary distinctly crested with 6 low processes; stigma unlobed. |
becoming pendent, 10–18 mm; tepals erect to spreading, lanceolate; more or less equal, white with prominent green midrib; margins entire; apex acute; stamens included; ovary crestless; stigma scarcely thickened, unlobed. |
2n | =14. |
=18. |
Allium nevii |
Allium triquetrum |
|
Distribution | ||
Discussion | Wet meadows and along streams, in rocky clay soils, seasonally moist scablands. Flowering Apr–Jun. 0–1200 m. Col, ECas. WA. Native. |
Road ditches, lawns, and other disturbed moist sites. Flowering Apr–Jul. 400–2800 m. BR, BW, Col, ECas, Lava, Owy. CA; Europe. Exotic. Allium triquetrum is cultivated for its attractive flowers. It readily escapes in south coastal Oregon and California and has potential to become invasive. |
Source | Flora of Oregon, volume 1, page 141 Nick Otting, Richard Brainerd, Barbara Wilson |
Flora of Oregon, volume 1, page 144 Nick Otting, Richard Brainerd, Barbara Wilson |
Sibling taxa | ||
Synonyms | Allium douglasii var. nevii | |
Web links |