Allium douglasii
{{Short description|Species of flowering plant}}
{{Speciesbox
| name = Douglas' Onion
| status = G4
| status_system = TNC
| status_ref = {{Cite NatureServe|date=6 December 2024|id=2.156634|title=Allium douglasii | NatureServe Explorer|access-date=22 December 2024}}
| taxon = Allium douglasii
| image = Allium douglasii 8030585.jpg
| image_caption = Allium douglasii in Lincoln County, Washington, US
| authority = Hook.
| synonyms = Allium hendersonii B.L.Rob. & Seaton
| synonyms_ref = {{Cite POWO|id=527957-1|title=Allium douglasii Hook. | Plants of the World Online | Kew Science|access-date=22 December 2024}}
}}
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 {{convert|3|cm|in|frac=4|abbr=on}} long. Scapes are round in cross-section, up to {{convert|40|cm|in|0|abbr=on}} tall. Flowers are up to {{convert|10|mm|frac=16|abbr=on}} across; tepals pink or purple with green midribs; anthers blue; pollen white or light gray.[https://www.biodiversitylibrary.org/page/415463#page/187/mode/1up Hooker, William Jackson. 1839. Flora Boreali-Americana 2: 184, pl. 197][https://www.biodiversitylibrary.org/page/29400411#page/297/mode/1up Robinson, Benjamin Lincoln, & Seaton, Henry Eliason. 1893. Botanical Gazette 18(6): 237–238.]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. Two grooved leaves usually remain during the flowering stage.{{Cite book|last=Taylor|first=Ronald J.|url=https://www.worldcat.org/oclc/25708726|title=Sagebrush Country: A Wildflower Sanctuary|publisher=Mountain Press Pub. Co|year=1994|isbn=0-87842-280-3|edition=rev.|location=Missoula, MT|pages=76|language=en|oclc=25708726|orig-year=1992}}
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 {{cvt|400–1300|m|ft}} above sea level.{{EFloras|1|242101354|Allium douglasii}}{{BONAP|ref|genus=Allium|species=douglasii}}
Conservation
{{As of|2024|December}}, 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.{{Cite web |title=USDA Plants Database |url=https://plants.usda.gov/plant-profile/ALDO |access-date=2024-12-22 |website=plants.usda.gov}}
References
{{Reflist}}
External links
- {{PFAF|Allium douglasii}}
{{Taxonbar|from=Q5669349}}
Category:Flora of Washington (state)