Herbs annual, to more than 60 cm tall, drying black. Stems single, ± woody when old, many branched apically; branches in whorls of 3 or 4, slender, with lines of hairs. Leaves in whorls of 3--6; petiole short; leaf blade ovate-oblong to lanceolate-oblong, 2.5--4.5 X ca. 1.5 cm, abaxially pubescent along midvein, pinnatipartite to pinnatisect; segments linear, serrate. Inflorescences with flowers in whorls in ± interrupted racemes; bracts leaflike, shorter than flowers, densely white villous. Pedicel short. Calyx ca. 4 mm, sparsely villous; lobes 5, unequal, serrate. Corolla rose, 1.8--2.1 cm; tube nearly as long as galea, strongly curved in calyx; galea falcate, ca. as long as tube, crested; lower lip 0.9--1.2 X 0.9--1.2 cm, middle lobe rounded. 2 filaments pubescent, 2 glabrous. Fl. Jun--Aug, fr. Sep--Oct.
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