Polygonum achoreum explained

Polygonum achoreum, common names Blake's knotweed, leathery knotweed or striate knotweed,^[1] is a North American species of plants in the buckwheat family. It is widespread across much of Canada and the northern United States.^[2]

Polygonum achoreum is an herb up to 70cm (30inches) tall with yellow-green flowers in flat-topped clusters.^{[3] [4]}

External links

• photo of herbarium specimen at Missouri Botanical Garden, collected in Missouri in 1993

Notes and References

1. Brako, L., A.Y. Rossman & D.F. Farr. 1995. Scientific and Common Names of 7,000 Vascular Plants in the United States 1–294.
2. http://bonap.net/MapGallery/State/Polygonum%20achoreum.png Biota of North America Program 2014 state-level distribution map
3. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=242417024 Flora of North America, Polygonum achoreum S. F. Blake, 1917.
4. https://www.biodiversitylibrary.org/page/569493#page/236/mode/1up Blake, Sydney Fay. 1917. Rhodora 19(226): 232–234