Allium geyeri |
Allium robinsonii |
|
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Geyer's onion |
Robinson's onion |
|
Bulbs | 2–10+; ovoid or slightly elongate; outer coats enclosing 1 or more bulbs, reticulate; cells rather coarse-meshed; open, fibrous. |
1–3+; renewal bulbs formed within coats of parent bulb; increase bulbs absent or 1–2; more or less equaling parent bulbs, never appearing as basal cluster; ovoid; outer coats membranous, lacking cellular reticulation or cells arranged in only 2–3 rows adjacent to roots; more or less quadrate; without fibers. |
Leaves | persistent, usually green at anthesis, usually 3–5; blades solid; more or less straight; flat, channeled; (6)12– 30 cm × 1–3(5) mm. |
usually deciduous with scape, 2; blades solid; flat, strongly falcate, 5–18 cm × 1–3(4) mm. |
Scapes | persistent; solitary; erect; terete or somewhat 2-angled, 10–50 cm × 1–3 mm. |
usually forming abscission layer and deciduous with leaves after seeds mature; solitary; erect; solid, flattened, slightly 2-edged, 3–7 cm × 1–3 mm. |
Umbels | persistent; erect; compact, 10–25-flowered, hemispheric to globose, not producing bulbils, or 0–5-flowered, largely replaced by ovoid, acuminate bulbils; pedicels becoming rigid and stiffly spreading in fruit, 8–13 mm; spathe bracts 2–3. |
deciduous with scape; erect; compact, 5–12-flowered, hemispheric; pedicels 3–12 mm; spathe bracts 2. |
Flowers | (4)6–8(10) mm; tepals erect or spreading; ovate to lanceolate; more or less equal, pink to white; margins often obscurely toothed; apex obtuse to acuminate; stamens included; ovary when present, inconspicuously crested with 3–6 low processes; stigma unlobed or obscurely lobed. |
7–9 mm; tepals erect, oblong; more or less equal, white to pale pink with red midribs; margins entire; apex obtuse; stamens included; ovary more or less distinctly crested with 3 or 6 low processes; stigma unlobed. |
2n | =14. |
|
Allium geyeri |
Allium robinsonii |
|
Distribution | ||
Discussion | 2 varieties. |
Sand and gravel deposits and sandy slopes. Flowering Apr–May. 50–800 m. Col. WA. Native. |
Source | Flora of Oregon, volume 1, page 139 Nick Otting, Richard Brainerd, Barbara Wilson |
Flora of Oregon, volume 1, page 142 Nick Otting, Richard Brainerd, Barbara Wilson |
Sibling taxa | ||
Subordinate taxa | ||
Web links |
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