Glyceria obtusa (Muhlenberg) Trinius. Coastal Mannagrass. Phen: Jun-Sep. Hab: Blackwater swamp forests, streamhead pocosins, wet meadows, freshwater marshes, in a wide variety of peaty, acidic soils. Dist: NS south to SC, on or near the Coastal Plain; disjunct to w. VA in Shenandoah Valley sinkhole ponds.
Origin/Endemic status: Native
Syn: = C, F, FNA24, G, GW1, HC, K1, K3, K4, NE, NY, Pa, RAB, Va, W, Tucker (1996); = Panicularia obtusa – S