| 词条 | Polygonum achoreum |
| 释义 |
| image = Polygonum achoreum (4985271408).jpg | genus = Polygonum | species = achoreum | authority = S.F. Blake 1917 | synonyms_ref = [1] | synonyms = *Polygonum erectum subsp. achoreum (S.F. Blake) Á. Löve & D. Löve }}Polygonum achoreum, common names Blake's knotweed,[2] leathery knotweed[2] or striate knotweed,[3] is a North American species of plants in the buckwheat family. It is widespread across much of Canada and the northern United States.[4]Polygonum achoreum is an herb up to {{convert|70|cm|in|abbr=on}} tall with yellow-green flowers in flat-topped clusters.[5][6] References1. ^The Plant List, Polygonum achoreum S.F. Blake 2. ^{{PLANTS|id=POAC3|taxon=Polygonum achoreum|accessdate=12 October 2015}} 3. ^Brako, L., A.Y. Rossman & D.F. Farr. 1995. Scientific and Common Names of 7,000 Vascular Plants in the United States 1–294. 4. ^Biota of North America Program 2014 state-level distribution map 5. ^1 Flora of North America, Polygonum achoreum S. F. Blake, 1917. 6. ^[https://www.biodiversitylibrary.org/page/569493#page/236/mode/1up Blake, Sydney Fay. 1917. Rhodora 19(226): 232–234] descriptions in English and Latin, commentary in English External links
4 : Polygonum|Flora of Canada|Flora of the United States|Plants described in 1917 |
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