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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

Synonymy: = FNA17, K1, K3, K4, S, Va; = Mecardonia acuminata (Walter) Small ssp. acuminata – Fl6, WH3; = Pagesia acuminata (Walter) Pennell ssp. typica – Pennell (1935); < Bacopa acuminata (Walter) B.L.Rob. – F; < Mecardonia acuminata (Walter) Small – Ar, C, G, GrPl, GW2, Il, NcTx, RAB, Tat, Tn, Tx

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: OBL (name change)
  • Great Plains: FACW (taxonomic split from wetland indicator species)
  • Midwest: OBL (taxonomic split from wetland indicator species)

Heliophily: 7

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image of plant© Bruce A. Sorrie | Original Image ⭷
image of plant© Alan Weakley source | Original Image ⭷


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