Mecardonia acuminata (Walter) Small var. acuminata . Mecardonia, Common Axil-flower. Phen: Jul-Sep; Aug-Oct. Hab: Marshes, ditches, wet pine savannas, bottomland forests, wet disturbed areas. Dist: DE and MD south to n. peninsular FL, west to e. TX, north in the interior to KY, TN, and MO.
ID notes: The long, ascending pedicels are distinctive for the species. The plant blackens on drying.
Origin/Endemic status: Native
Syn: = FNA17, K1, K3, K4, S, Va; = Mecardonia acuminata ssp. acuminata – Fl6, WH3; = Pagesia acuminata ssp. typica – Pennell (1935); < Bacopa acuminata – F; < Mecardonia acuminata – Ar, C, G, GrPl, GW2, Il, Mo3, NcTx, RAB, Tn, Tx
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