Persicaria longiseta (de Bruijn) Kitagawa. Longbristle Smartweed, Bristly Lady’s-thumb, Creeping Smartweed. Phen: May-Oct. Hab: Disturbed areas, lawns, ditches. Dist: Native of Asia.
Origin/Endemic status: E. and se. Asia
Syn: = Ar, FNA5, Il, K3, K4, Mi, Mo3, NE, NY, Pa, Tn, Va; = Persicaria cespitosa var. longiseta – Fl4; = Polygonum cespitosum var. longisetum – C, F, G, GW2, K1, RAB, W, WH3, WV, Horton (1972), Mitchell & Dean (1978)
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