Didissandra lancifolia Franchet, Nouv. Arch. Mus. Hist. Nat., ser. 2, 10: 63. 1887-1888; Ancylostemon lancifolius (Franchet) B. L. Burtt; A. purpureus B. L. Burtt & R. Davidson.

Petiole to 8 cm; leaf blade narrowly lanceolate to ovate-elliptic, 3.5-14 X 2-3.7 cm, adaxially pale brown villous and puberulent to glabrescent, abaxially brown villous, base cuneate to truncate, margin sinuous to irregularly serrulate or dentate; lateral veins distinct. Peduncle 5-22 cm, brown villous. Pedicel glandular puberulent and rust-brown villous. Corolla 0.8-1.2 cm; tube 6-8 mm; adaxial lip distinctly longer than abaxial; adaxial lip lobes oblong, 1-1.2 X 1.5-2 mm; abaxial lip lobes suborbicular, 1.7-2 X 1-2 mm. Stamens 4-5 mm; filaments glabrous. Pistil 5-6 mm; ovary 3-4 mm. Fl. Jul-Sep, fr. Sep.

* Shady, damp rocks in forests; 1100-1300 m. W Sichuan.