| 词条 | Polygonum engelmannii |
| 释义 |
|status = |status_system = |regnum = Plantae |unranked_divisio = Angiosperms |unranked_classis = Eudicots |unranked_ordo = Core eudicots |ordo = Caryophyllales |familia = Polygonaceae |genus = Polygonum |species = P. engelmannii |binomial = Polygonum engelmannii |binomial_authority =Greene 1885 |synonyms_ref=[1] |synonyms=*Polygonum douglasii subsp. engelmannii (Greene) Kartesz & Gandhi }}Polygonum engelmannii, common name Engelmann's knotweed, is a North American species of plants in the buckwheat family. It is native to western Canada and the western United States, usually at high elevations in the mountains. It has been found in Alberta, British Columbia, Idaho, Montana, Wyoming, Nevada, Utah, and Colorado.[2]Polygonum engelmannii is an branching herb up to 30 cm (1 foot) tall. It has clusters of green or purple flowers.[3][4] References1. ^Tropicos, Polygonum engelmannii Greene {{Taxonbar|from=Q18082144}}{{Polygonaceae-stub}}2. ^Biota of North America Program 2014 county distribution map 3. ^Flora of North America, Polygonum engelmannii Greene, 1885. (as engelmanni). Engelmann's knotweed 4. ^[https://www.biodiversitylibrary.org/page/3154466#page/192/mode/1up Greene, Edward Lee. 1885. Bulletin of the California Academy of Sciences 1(3): 126] 6 : Polygonum|Flora of Western Canada|Flora of the Western United States|Flora of the Rocky Mountains|Plants described in 1885|Taxa named by Edward Lee Greene |
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