Sagittaria weatherbiana Fernald. clade: Graminea Group, Secundifolia Complex. Weatherby’s Arrowhead. Phen: Apr-Jun. Hab: Fresh to brackish marshes, tidal cypress-gum swamps, streambanks, pineland pools. Dist: Se. VA south to Panhandle FL.

Origin/Endemic status: Endemic

Taxonomy Comments: Isozyme studies by Hauber & Legé (1999) provide evidence that this taxon should be given species status; its genetic identity with var. graminea is low, and comparable to the difference between S. graminea (in the narrow sense) and S. platyphylla.

Synonymy: = F, K4, Va; = Sagittaria graminea Michx. ssp. weatherbiana (Fernald) R.R.Haynes & Hellq. – FNA22, Keener (2005); = Sagittaria graminea Michx. var. weatherbiana (Fernald) Bogin – C, G, GW1, K1, RAB, WH3, Bogin (1955), Wooten (1973)

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