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General DescriptionHerbs perennial, 8-25 cm tall, rhizomatous. Stems robust, erect, angles and nodes villous. Petiole narrowly winged, basally amplexicaul; leaf blade lanceolate-oblong to lanceolate, 5-11 cm long, 1.8-3 cm wide, base cuneate-decurrent, margin remotely undulate-crenate, inconspicuously crenate-dentate, to subentire, apex obtuse, adaxially glabrous or very sparsely pilose, abaxially villous on veins or sparsely pilose near apex. Floral leaves white-yellow, white, or greenish purple, reduced apically, ovate to broadly ovate, 3.5-5 cm long, 1.8-2.7 cm wide, base rounded, amplexicaul, margin entire. Calyx campanulate to subfunnelform, 7-9 mm, slightly swollen in front, with inconspicuous accessory veins; teeth narrowly triangular, 1/2 or more as long as calyx, regular, apically acuminate, ciliate. Corolla white, whitish green, or whitish yellow with purple lines, narrowly funnelform, 1.8-2.5 cm, sparsely villous; tube slightly swollen to saccate near base, villous annulate inside, curved; upper lip straight, 2-lobed, with subcircular lobes; lower lip projected, with middle lobe narrowly flabellate, ca. 6.5 mm, apex emarginate; lateral lobes semicircular, deltate to oblong, ca. 3 mm. Nutlets slightly swollen at middle, areole almost 1/2 as long as adaxial side of nutlet.