Plants lemon-scented; stems creeping or floating, smooth below, villous distally; lvs ovate, obtuse, broadly rounded to subcordate at base, 1–2.5 cm, crenate, palmately 5–9-veined; fls solitary from some upper nodes on pedicels 5–15 mm; cal subtended by a pair of minute bractlets 1–2 mm; sep glandular-punctate, the upper one broadly ovate-cordate, ca 8 mm; cor blue, campanulate, 1 cm, pubescent within, the 5 lobes a little shorter than the tube, the 2 upper united half-length; ovary surrounded by a circle of short bristles; stigma one, shallowly bilobed. Wet shores and shallow water; se. Va. to Fla. and Tex.; disjunct in Ky. All summer. (Hydrotida c.)
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