Allium nevii |
Allium cernuum |
|
---|---|---|
Nevius' onion |
nodding onion |
|
Bulbs | 1–5+; ovoid; outer coats enclosing 1 or more bulbs, membranous; more or less reticulate; cells quadrate to polygonal, vertically oblong; without fibers. |
2–5+, clustered, often short-rhizomatous at base, oblong, elongate; outer coats enclosing 1 or more bulbs, membranous, minutely striate, cellular-reticulate; cells in regular vertical rows, narrowly elongate; fibers persistent; parallel; few. |
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, 3–5; blades solid; flat, channeled to broadly V-shaped in cross section, 10–25 cm × 1–6 mm. |
Scapes | persistent, 1–3; erect; solid; terete or somewhat flattened, 2-edged, not expanded proximal to inflorescence, 15–30 cm × 1–3 mm. |
persistent, sometimes 2 or more produced successively from single bulb, usually clustered, nodding; solid; terete or ridged, particularly distally, sometimes flattened and narrowly winged, abruptly recurved near apex, 10–50 cm × 1–3 mm. |
Umbels | persistent; erect; compact, 10–30-flowered, hemispheric; pedicels 8–12 mm; spathe bracts 2. |
persistent, nodding; loose, 8–35-flowered, hemispheric; pedicels 6–25 mm, becoming stouter in fruit, elongating and bending abruptly upward from near point of attachment; spathe bracts 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. |
4–6 mm; tepals more or less erect, elliptic-ovate; more or less equal, pink or white; margins more or less entire; apex more or less obtuse; at least outer tepals strongly incurved; midribs not thickened; stamens exserted; ovary conspicuously crested with 6 triangular processes; stigma scarcely thickened, unlobed. |
2n | =14. |
=14. |
Allium nevii |
Allium cernuum |
|
Distribution | ||
Discussion | Wet meadows and along streams, in rocky clay soils, seasonally moist scablands. Flowering Apr–Jun. 0–1200 m. Col, ECas. WA. Native. |
Flowering May–Jul. 0–1400 m. BW, Casc, CR, ECas, Est, WV. ID, WA; north to British Columbia, east to MA, southeast to AZ and Mexico. Native. Allium cernuum is the most widespread native North American onion. |
Source | Flora of Oregon, volume 1, page 141 Nick Otting, Richard Brainerd, Barbara Wilson |
Flora of Oregon, volume 1, page 138 Nick Otting, Richard Brainerd, Barbara Wilson |
Sibling taxa | ||
Synonyms | Allium douglasii var. nevii | |
Web links |