Allium madidum

Mountain Swamp Onion
Scientific classification
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Amaryllidaceae
Subfamily: Allioideae
Tribe: Allieae
Genus: Allium
Species: A. madidum
Binomial name
Allium madidum
S.Wats.

Allium madidum, common name Mountain Swamp Onion, is a plant species native to the west-central Idaho (Valley, Adams, and Washington Counties), southern Washington (Walla Walla County) and eastern Oregon. It grows in wet meadows at elevations of 1100–2000 m.[1][2][3]

Allium madidum produces 1-3 bulbs with as many as 30 smaller bulbels attached. The full-size bulbs are round to egg-shaped, up to 1.6 cm long. Flowers are bell-shaped, up to 10 mm across; tepals white with green or pink midveins; pollen yellow.[1][4][5]

References

  1. 1 2 Flora of North America v 26 p 255, Allium madidum
  2. BONAP (Biota of North America Project), floristic synthesis Allium madidum
  3. Vascular Plant List, Walla Walla County, Don Knoke, 2004, Washington Native Plant Society
  4. Sereno Watson. 1879. Proceedings of the American Academy of Arts and Sciences 14: 228.
  5. Hitchcock, C. H., A.J. Cronquist, F. M. Ownbey & J. W. Thompson. 1969. Vascular Cryptogams, Gymnosperms, and Monocotyledons. 1: 1–914. In C. L. Hitchcock Vascular Plants of the Pacific Northwest. University of Washington Press, Seattle.
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