长梗勾儿茶 chang geng gou er cha

Shrubs scandent, glabrous. Branchlets red-brown, smooth. Stipules ovate-triangular, ca. 2 mm, caducous; petiole remarkably long, 1.2-2.7 cm, glabrous; leaf blade abaxially grayish white, adaxially green, oblong or ovate-oblong, 4.5-6.5 × 2.5-4 cm, papery, lateral veins 10-12 pairs, slightly prominent on both surfaces, base rounded, apex shortly acuminate, rarely acute. Inflorescences to 6 cm, glabrous. Flowers white, 3-3.5 mm in diam., usually 3-12-fascicled in terminal or axillary, cymose racemes; peduncles 5-10 mm, rarely to 1.5 cm. Pedicel 4-6 mm. Sepals ovate-triangular, ca. 2 mm, apex slightly obtuse. Petals spatulate, apex obtuse. Stamens longer than petals. Fruit not seen. Fl. summer, fr. unknown.

● Forests; middle elevations. SE Yunnan (Xichou).

This species is characterized by its long petioles and up to 1.5 cm long peduncles.