Crawfurdia pterygocalyx Hemsley in F. B. Forbes & Hemsley, J. Linn. Soc., Bot. 26: 123. 1890.

Stem slender, internodes 5-10 cm. Petiole flattened, 2-4 × 1-1.5 mm; leaf blade lanceolate to ovate-lanceolate, 3-7 × 0.5-1.5 cm, base narrowed, margin scabrous, veins 1-3. Inflorescences axillary or terminal, 1-flowered or in cymes; bractlets sometimes present, lanceolate. Pedicel 0.3-5 cm, slender. Calyx membranous; tube ca. 1 cm, wings 1-2 mm wide; lobes lanceolate, 4-7 × ca. 1 mm. Corolla blue, tube 1.1-1.5 cm; lobes oblong, ca. 8 × 3 mm, apex rounded. Stamens inserted at middle of corolla tube; filaments filiform, ca. 5 mm; anthers ovoid, ca. 2 mm. Style cylindric, ca. 2 mm; stigma lobes suborbicular. Fruiting pedicel ca. 5 mm; capsules ellipsoid, ca. 1.5 cm. Seeds brown, ellipsoid, ca. 1 × 0.7 mm; wings discoid, irregular. Fl. and fr. Aug-Sep.

Forests, forest margins; 1100-2800 m. Hebei, Heilongjiang, Henan, Hubei, Jilin, Nei Mongol, Qinghai, Shaanxi, Shanxi, Sichuan, SE Xizang, Yunnan [Japan, Korea, Russia].