Biology:Allium robinsonii
| Columbia River onion | |
|---|---|
| |
| Allium robinsonii in Grant County, Washington | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Amaryllidaceae |
| Subfamily: | Allioideae |
| Genus: | Allium |
| Species: | A. robinsonii
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| Binomial name | |
| Allium robinsonii L.F. Hend.
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Allium robinsonii, the Columbia River onion or Robinson's onion, is a rare plant species native to the United States States of Washington (state) and Oregon, although some studies suggest that the Oregon populations may now be extinct. The species has been reported from five counties in Washington (Ferry, Yakima, Grant, Franklin and Benton) and five in Oregon (Umatilla, Morrow, Gilliam, Sherman and Wasco). It is found in sand and gravel deposits along the lower Columbia River and some of its tributaries, usually at elevations less than 200 m.[2][3][4] The species is also cultivated as an ornamental in other regions, including in Europe.[5]
Allium robinsonii produces 1–3 egg-shaped bulbs up to 2 cm long, but no underground rhizomes. The flowering stalks are relatively short for the genus, rarely more than 8 cm tall. The flowers are bell-shaped, up to 9 mm across; tepals are white to pale pink with red midrib; anthers purple; pollen yellow or gray; ovary crested. The plant is named in honor of B. L. Robinson of the Gray Herbarium of Harvard University.[2][6][7][8][9] The leaves are flat and succulent, remaining during flowering.[10]
References
- ↑ "NatureServe Explorer - Allium robinsonii". NatureServe. 2022-06-22. https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.139364.
- ↑ 2.0 2.1 Flora of North America v 26 p 276, Allium robinsonii
- ↑ BONAP (Biota of North America Project) floristic synthesis, Allium robinsonii
- ↑ Wildflowers, Turner Photographics, Mike Turner, 2013
- ↑ "Gardening Europe, Allium robinsonii". http://it.gardening.eu/arc/piante/Piante-perenni/Allium-robinsonii-Henderson/2321/.
- ↑ Henderson, Louis Forniquet. 1930. Rhodora 32(374): 22.
- ↑ photo of herbarium specimen at Missouri Botanical Garden, isotype of Allium robinsonii
- ↑ 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.
- ↑ Onions East of the Cascade Mountains, Paul Schlichter, Robinson's onion, 2007
- ↑ Taylor, Ronald J. (1994) (in en). Sagebrush Country: A Wildflower Sanctuary (rev. ed.). Missoula, MT: Mountain Press Pub. Co. pp. 76. ISBN 0-87842-280-3. OCLC 25708726. https://www.worldcat.org/oclc/25708726.
External links
Wikidata ☰ Q15522156 entry
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