Potamogeton perfoliatus Linnaeus. Perfoliate Pondweed, Clasping-leaf pondweed, Redhead Grass. Phen: Jun-Oct. Hab: Fresh to oligohaline tidal aquatic beds, also ponds and other nontidal waters. Dist: NL (Newfoundland), NL (Labrador) west to MI, south to ne. NC, and n. OH; disjunct in w. FL, c. peninsular FL, s. AL, and se. LA (where perhaps historical); Guatemala.
Origin/Endemic status: Native
Synonymy: = AqW, C, FNA22, G, K1, K3, K4, Meso6, Mi, NE, NY, S, S13, Va, WH3, Wiegleb & Kaplan (1998); > Potamogeton bupleuroides Fernald – Tat; < Potamogeton perfoliatus L. – Pa; > Potamogeton perfoliatus L. var. bupleuroides (Fernald) Farw. – F, GW1, RAB; > Potamogeton perfoliatus L. var. perfoliatus – F
Wetland Indicator Status:
- Atlantic and Gulf Coastal Plain: OBL
- Eastern Mountains and Piedmont: OBL
- Midwest: OBL
- Northcentral & Northeast: OBL
Heliophily: 9
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