Persicaria meisneriana (Chamisso & Schlechtendal) M. Gómez var. beyrichiana (Chamisso & Schlechtendal) C.C. Freeman. Mexican Tearthumb. Hab: Wet savannas, blackwater river floodplains, ditches; sometimes considered only introduced in southeastern North America, but probably native. Dist: E. SC south to FL, west to LA; Mexico and Central America south to n. South America; Brazil; se. Africa.
Origin/Endemic status: Native
Syn: = Fl4, FNA5, K3, K4; = Polygonum meisnerianum var. beyrichianum – GW2, K1, WH3; < Polygonum meisnerianum – Tx, Horton (1972)
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