Gyrocheilos retrotrichus W. T. Wang

Petiole to 18 cm, densely spreading or retrorsely pubescent, hairs 0.8-2 mm; leaf blade broadly ovate to reniform, 7-15.5 X 5.5-15.5 cm, adaxially with mixed hairs 0.2-1.2 and 1-2 mm, abaxially puberulent with longer hairs along veins, margin double dentate, apex acute to obtuse. Peduncle 8.5-34 cm, spreading pubescent, hairs 0.2-2 mm; bracts 6-8 X 2-3.5 mm, margin entire to crenate. Pedicel glabrous. Calyx 3-4 mm, 2-lipped or 4- or 5-lobed; tube 1-2 mm; lobes equal to unequal, narrowly ovate to obovate, 1-3 mm wide, outside glabrous or some lobes with 1-3 short hairs near apex. Corolla rose-pink, ca. 1.3 cm; tube ca. 7.5 mm; adaxial lip semi-orbicular, ca. 3 mm; abaxial lip ca. 5.5 mm. Stamens adnate to corolla ca. 4 mm above base; filaments ca. 3 mm; anthers ca. 2.5 mm; staminodes adnate to corolla ca. 5 mm above base, 0.5-1.5 mm. Pistil ca. 1.4 cm, glabrous; ovary ca. 6 mm. Capsule 2.5-3 cm. Fl. Mar-Jul, fr. May-Sep.

Guangdong, N Guangxi, SE Guizhou.

* Valley forests, shaded rocks in valleys; 400-1000 m.

Gyrocheilos retrotrichus là một loài thực vật có hoa trong họ Tai voi. Loài này được W.T.Wang mô tả khoa học đầu tiên năm 1981.

折毛圆唇苣苔（学名：Gyrocheilos retrotrichus）为苦苣苔科圆唇苣苔属下的一个种。