Plants 8-18 cm tall. Stems 4-10 cm, 1-1.5 cm in diam. Leaves ovate or oblong, along with bracts and bractlets glabrous. Flowers clustered at stem apex. Bract borne at pedicel base, long ovate or oblong, 1.4-2 cm X 6-8 mm, apex acute; bractlets borne at base or lower part of pedicel; oblong or spatulate, 1.5-2 cm X 4-8(-10) mm, apex obtuse or dentate. Pedicel 1-2(-2.5) cm. Calyx tubular-campanulate, funnelform upward, 1.5-1.8 cm in diam. Corolla usually red, rose-red, or rarely white, fragrant, 5-7 cm, glabrous abaxially, villous adaxially; tube slightly constricted, upward enlarged; upper lip 2-lobed, lobes semirounded, entire or dentate; lower lip smaller, 3-lobed, lobes oblong-lanceolate. Filaments 2-3 cm, base densely villous; anthers ovoid, 3-4 mm, connective broad, apex elongated and conical. Ovary ovoid. Style 3-5 cm; stigma discoid or 2-lobed. Capsule ovoid-globose. Seeds ellipsoid. Fl. Apr-Aug, fr. Aug-Oct.
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