Perennial, 4–12 dm, usually simple, short-hairy ± throughout, or rarely largely glabrate; lvs oblong to oblong-ovate or lanceolate, 5–10 cm, dentate, the lower obtuse or rounded, the upper smaller and often acute; raceme 1–3 dm, usually secund, crowded; bracts lanceolate to ovate, 1–2 cm; pedicels 2–5 mm, bibracteolate near the base or sometimes at the middle; fls 1.5–2 cm, blue, fenestrate, the lower lip glabrous within; sep lance-linear, 6–10 mm; auricles small; 2n=14. Wet soil; s. N.J. to s. O. and s. Ill., s. to Fla. and Tex. Aug.–Oct.
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