Polygonaceae

Denseflower knotweed

Persicaria glabra (Willd.) M.Gómez

Family: Polygonaceae
Genus: Persicaria

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Denseflower knotweed: Family: Polygonaceae , Persicaria glabra (Willd.) M.Gómez, syn. Polygonum glabrum Willd. 1-1.5m tall herb found in marshy areas along canals and water logged ar — Photo: Lalithamba, CC BY 2.0, from Wikimedia Commons

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Common names

By language (6)

Bangla: পানি মরিচ
Chinese: 光蓼, 紅辣蓼
English: Denseflower knotweed, Common marsh buckwheat
Malayalam: കൂവനഞ്ച്
Persian: پرسیکاریا گلابرا
Tamil: ஆற்று அரளி

Synonyms

Persicaria densiflora Moldenke
Persicaria portoricensis Small
Polygonum densiflorum Meisn.
Polygonum glabrum Willd.
Polygonum portoricense Bert. ex Endl.

Photos

Photo: Lalithamba, CC BY 2.0, from Wikimedia Commons
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons
Photo: Anatas, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons
Photo: Cara P, CC BY-SA 4.0, from Pl@ntNet via GBIF
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons
Photo: Judy Gallagher, CC BY 2.0, from Wikimedia Commons
Photo: Judy Gallagher, CC BY 2.0, from Wikimedia Commons
Photo: Vinayaraj, CC BY-SA 4.0, from Wikimedia Commons
Photo: Dinesh Valke from Thane, India, CC BY-SA 2.0, from Wikimedia Commons

More in Persicaria

Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.