Allium madidum |
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swamp onion |
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Bulbs | 1–3; larger bulbs each usually with cluster of 10–30 easily detached bulbils to one side of base, globose to ovoid; outer coats enclosing 1 or more bulbs, membranous; without fibers. |
Leaves | persistent, green at anthesis, 2; blades solid; flat or channeled, 10–25 cm × 1–4 mm. |
Scapes | persistent; solitary; erect; solid; more or less terete, sometimes ridged, 10–20 cm × 1–2 mm. |
Umbels | persistent; erect; compact, 10–20(40)-flowered, hemispheric; pedicels 5–12 mm; spathe bracts 2. |
Flowers | 6–10 mm; tepals erect or more or less spreading, white with prominent green or pink midveins, lanceolate; more or less equal; margins entire; apex obtuse to acuminate, becoming involute at tip; stamens included; ovary crestless or obscurely crested with 3 minute processes; stigma unlobed or slightly lobed. |
2n | =28, 42. |
Allium madidum |
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Distribution | |
Discussion | Open mixed conifer forests, gravelly seeps, seasonally wet meadows and scablands. Flowering May–Jul. 1000–2200 m. BW. ID. Native. |
Source | Flora of Oregon, volume 1, page 140 Nick Otting, Richard Brainerd, Barbara Wilson |
Sibling taxa | |
Web links |