Hydrangea mangshanensis C. F. Wei

Shrubs 1-2 m tall. First year's branchlets purplish brown, densely crisped pubescent. Second year's branchlets gray-white, glabrous; bark not peeled off. Petiole 1-2 cm, adaxially densely crisped pubescent along both sides of channel; leaf blade abaxially greenish, adaxially deep green, elliptic to suboblong, 7-11 × 2.5-4 cm, membranous, abaxially glabrous, adaxially pubescent and long hairy, hairs denser and crisped along veins, secondary veins ca. 6 on both sides of midvein, abaxially slightly elevated, base broadly cuneate, margin distally serrate, apex shortly to long acuminate. Inflorescences corymbose cymes, 4-7 cm wide, densely crisped pubescent, apex truncate to slightly arcuate; branches 3, thin. Sterile flowers with sepals 3 or 4, rhomboid-elliptic to triangular-ovate, 1.5-2 mm in fruit, margin entire. Fertile flowers with calyx tube cupular, ca. 0.7 × 1.5 mm; teeth triangular, ca. 0.5 mm. Petals elliptic-rhomboid, 2-2.5 × ca. 1 mm, membranous, base shortly clawed, apex slender acuminate. Stamens 10, subequal, 1.5-2.5 mm; anthers oblong, less than 1 mm. Ovary nearly 1/2 superior. Styles 3 or 4, slightly spreading, ca. 1 mm in fruit; stigmas hemispheric in fruit, enlarged. Capsule subglobose, 2.5-3 mm in diam., projected apical part 1.2-1.5 mm, subequaling calyx tube. Seeds brownish, subglobose to obovoid, slightly compressed, ca. 0.5 × 0.5 mm, wingless; seed coat net veined. Fl. May-Jun, fr. Oct-Nov.

N Guangdong, SE Hunan.

* Dense to sparse forests in valleys, on mountain slopes, or on trailsides; 300-1500 m.