Polygonum sawatchense is a North American species of plants in the buckwheat family. It in the western United States and western Canada, from the Pacific Coast to the western Great Plains, so from British Columbia south to California and east as far as New Mexico, Colorado, Saskatchewan, and the Dakotas.[2][3]
| Polygonum sawatchense | |
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Order: | Caryophyllales |
| Family: | Polygonaceae |
| Genus: | Polygonum |
| Species: | P. sawatchense
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| Binomial name | |
| Polygonum sawatchense Small 1893
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| Synonyms[1] | |
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Polygonum sawatchense is a branching, hairless herb up to 50 cm (20 in) tall. Leaves are narrow, up to 45 mm (1.8 in) long. Flowers are green, red, or white, in elongated arrays.[4][5][6]
Species is named for the Sawatch Range in Colorado, where Brandegee collected the type specimen.>[5]
- Polygonum sawatchense subsp. oblivium Costea & Tardif - British Columbia, Washington, Oregon, California, Idaho, Nevada
- Polygonum sawatchense subsp. sawatchense - from Alberta + Saskatchewan south to Arizona + New Mexico
References
edit- ^ The Plant List, Polygonum douglasii subsp. johnstonii (Munz) J.C.Hickman
- ^ Biota of North America Program 2014 county distribution map, Polygonum sawatchense
- ^ a b Costea, Mihai & Tardif, Francois J. 2003. Sida 20(4): 1631-1640 includes descriptions of both subspecies plus line drawings and photos taken with scanning electron microscope
- ^ a b Flora of North America, Polygonum sawatchense Small, 1893.
- ^ a b Small, John Kunkel 1893. Bulletin of the Torrey Botanical Club 20(5): 213–214 description in English
- ^ Small, John Kunkel 1893. Bulletin of the Torrey Botanical Club 20(5): plate CLVI (156) full-page line drawing of Polygonum sawatchense
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