Callitriche heterophylla Pursh var. heterophylla . Common Water-starwort. Phen: Mar-Nov. Hab: Pools, slow-moving streams, ditches. Dist: Greenland west to AK, south to c. peninsular FL, TX, CA, and Mexico.
Origin/Endemic status: Native
Syn: = Mo3, NE, Va, Lansdown (2009); = Callitriche heterophylla ssp. heterophylla – K1, K3, K4, NY; > Callitriche anceps – F, Fassett (1951); < Callitriche heterophylla – Ar, C, Fl6, FNA17, G, GrPl, GW2, Il, Mi, NcTx, Pa, RAB, S, Tn, Tx, W, WH3, Crow & Hellquist (2000a); > Callitriche heterophylla – F; > Callitriche heterophylla var. heterophylla – Fassett (1951)
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