Allium tuberosum |
Allium platycaule |
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broadstem onion, flatstem onion |
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Bulbs | 1–5+; ovoid; renewal bulbs formed within coats of parent bulb; more or less equaling parent bulbs; outer coats enclosing 1 or more bulbs, membranous, lacking cellular reticulation or cells arranged in only 2–3 rows adjacent to roots; more or less quadrate; without fibers. |
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Leaves | usually deciduous with scape, withering from tip at anthesis, 2; blades solid; flat, falcate, 10–30 cm × (6)8–18 mm. |
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Scapes | usually forming abscission layer and deciduous with leaves after seeds mature; solitary; erect; solid, strongly flattened, winged distally, 7–25 cm × 2–7 mm. |
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Umbels | persistent; erect; loose, 30–90-flowered, globose; pedicels 10–25 mm; spathe bracts 2–5. |
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Flowers | 8–15 mm; tepals spreading, narrowly lanceolate; more or less equal, bright pink to rose; margins entire; apex long-acuminate; stamens exserted; anthers yellow; ovary crestless; stigma scarcely thickened, unlobed. |
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2n | =14. |
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Allium tuberosum |
Allium platycaule |
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Distribution | ||
Discussion | Rocky, sandy slopes. Flowering May–Jul. 1300–2500 m. BR, ECas. CA, NV. Native. |
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Source | Flora of Oregon, volume 1, page 142 Nick Otting, Richard Brainerd, Barbara Wilson |
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Sibling taxa | ||
Web links |