Herbs perennial, 30--40 cm tall. Stems usually branched basally, pubescent or glabrescent. Leaves in whorls of 4, proximal ones sometimes opposite; petiole 4--5 cm, slender, bases often dilated, connate; leaf blade oblong-lanceolate, 9--10 X 2.5--3 cm, membranous, glabrous or glabrescent, pinnatisect; segments 8--11 pairs oblong-lanceolate, margin double dentate or lobed. Flowers axillary; bracts leaflike. Pedicel 1--2 mm. Calyx ca. 1.5 cm, 1/3 cleft anteriorly; lobes 2, oblong-lanceolate, 7--8 mm. Corolla yellow; tube erect, 1.7--2 cm; galea erect basally, ca. 1 cm; beak bent downward, 5--6 mm, slender; lower lip 1.3--1.8 cm; lobes 3, rounded, middle lobe smallest. 2 filaments sparsely villous and 2 glabrous or all pubescent. Fl. Jul--Aug, fr. Aug--Sep.
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