*Persicaria extremiorientalis (Voroschilov) Tzvelev. Section: Persicaria. Common name: East Asian Smartweed. Phenology: Aug-Nov. Habitat: Disturbed areas, roadsides, roadsides. Distribution: Native of Japan, China, Korea, and Sakhalin. Reported for Horry County, SC (Bradley et al. [in prep.]).
Origin/Endemic status: E. and se. Asia
Taxonomy Comments: See Atha, Nee, & Naczi (2010) for additional information. "The species belongs to Persicaria section Persicaria, and is distinguished from all other North American species by the combination of stems usually hispid or sparsely pilose with long, soft hairs; ocrea outer surfaces strigose and the apices setose; leaf blades eglandular and the abaxial surfaces golden-strigose; racemes dense, often nodding, the bracts short-ciliate; achenes small, brown, lenticular or biconcave (rarely trigonous) and basally tumescent" (Atha, Nee, & Naczi 2010).
Synonymy ⓘ: = K4, NY, Atha, Nee, & Naczi (2010); Polygonum extremiorientale Vorosch.; = n/a — C, FNA5, Pa, RAB, Tat. Basionym: Polygonum extremiorientale Vorosch. 1984
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© Gary P. Fleming | Original Image ⭷
© Gary P. Fleming | Original Image ⭷
© Gary P. Fleming | Original Image ⭷
© Gary P. Fleming | Original Image ⭷
© Gary P. Fleming | Original Image ⭷Feedback
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Horticultural Information
No horticultural data found for this taxon.