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Allium douglasii

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Species of flowering plant

Douglas' Onion
Allium douglasii in Lincoln County, Washington, US
Conservation status

Apparently Secure  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Amaryllidaceae
Subfamily: Allioideae
Genus: Allium
Species: A. douglasii
Binomial name
Allium douglasii
Hook.
Synonyms

Allium hendersonii B.L.Rob. & Seaton

Allium douglasii, the Douglas' onion, is a perennial herbaceous flowering plant in the Amaryllidaceae family. It is native to northeastern Oregon, eastern Washington, and northern Idaho.

Description

Allium douglasii is a perennial herbaceous flowering plant that produces egg-shaped bulbs up to 3 cm (1+1⁄4 in) long. Scapes are round in cross-section, up to 40 cm (16 in) tall. Flowers are up to 10 mm (3⁄8 in) across; tepals pink or purple with green midribs; anthers blue; pollen white or light gray. Two grooved leaves usually remain during the flowering stage.

Distribution and habitat

Allium douglasii is endemic to sections of the Northwestern United States (northeastern Oregon, Idaho, eastern Washington). It typically grows in shallow soils at elevations of 400–1,300 m (1,300–4,300 ft) above sea level.

Conservation

As of December 2024, the conservation group NatureServe listed Allium douglasii as Apparently Secure (G4) worldwide. This status was last reviewed on 7 August 1984. At the state level, this species is listed as No Status Rank (not assessed) in Idaho and Oregon, and as Secure (G5) in Washington.

Taxonomy

Allium douglasii was first named and described by William Jackson Hooker in 1838 in the Flora Boreali-Americana publication

Etymology

The specific epithet, douglasii, is named in honour of scottish botanist David Douglas. In English, this species is commonly known as Douglas' Onion.

References

  1. ^ NatureServe (6 December 2024). "Allium douglasii | NatureServe Explorer". NatureServe Explorer. Arlington, Virginia. Retrieved 22 December 2024.
  2. "Allium douglasii Hook. | Plants of the World Online | Kew Science". Plants of the World Online. Royal Botanic Gardens, Kew. Retrieved 22 December 2024.
  3. ^ Flora of North America Editorial Committee (ed.). "Allium douglasii". Flora of North America North of Mexico (FNA). New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  4. Hooker, William Jackson. 1839. Flora Boreali-Americana 2: 184, pl. 197
  5. Robinson, Benjamin Lincoln, & Seaton, Henry Eliason. 1893. Botanical Gazette 18(6): 237–238.
  6. 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.
  7. Taylor, Ronald J. (1994) . Sagebrush Country: A Wildflower Sanctuary (rev. ed.). Missoula, MT: Mountain Press Pub. Co. p. 76. ISBN 0-87842-280-3. OCLC 25708726.
  8. "Allium douglasii". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
  9. "USDA Plants Database". plants.usda.gov. Retrieved 2024-12-22.

External links

Taxon identifiers
Allium douglasii
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