Allium madidum

Mountain swamp onion
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Amaryllidaceae
Subfamily: Allioideae
Genus: Allium
Species:
A. madidum
Binomial name
Allium madidum

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] Flowers bloom May to July.[6]

References

  1. ^ a b 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" (PDF). Archived from the original (PDF) on 2014-03-14. Retrieved 2014-03-14.
  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.
  6. ^ "Lady Bird Johnson Wildflower Center - The University of Texas at Austin". www.wildflower.org.