- Scientific Name: Hydrangea moellendorffii Hance
- Ref: J. Bot. 12:177. 1874
- Synonyms: Cardiandra alternifolia subsp. moellendorffii (Hance) H.Hara & H.Ohba; C. laxiflora H.L.Li; C. moellendorffii (Hance) Migo; C. moellendorffii var. laxiflora (H.L.Li) C.F.Wei; C. sinensis Hemsl.; C. sinensis var. moellendorffii (Hance) S.S.Ying
- Chinese Common Name: 草绣球 cǎo∙xiùqiú, 人心药 rénxīn∙yào
- Japanese Common Name: オオクサアジサイ [大草紫陽花] ōkusaajisai
- Family: Hydrangeaceae
- Genus: Hydrangea
- Distribution: Dense to sparse forests in valleys or on mountain slopes; 700-1500 m. Anhui, Fujian, Guangdong, Guangxi, Guizhou, Hubei, Hunan, Jiangxi, Zhejiang [Japan (Ryukyu Islands)].
- Photo: 08/14/2010, Qingliang Peak, Zhejiang
Subshrubs 0.3-1 m tall. Stems brownish when dry, slightly striate. Leaves sparsely scattered along stem, alternate, sessile or petiolate; petiole 1-3(-7) cm; leaf blade elliptic to obovate-oblong, 6-22 × 3-10 cm, papery, abaxially sparsely pubescent to subglabrous, adaxially sparsely strigillose, secondary veins 7-9 on both sides of midvein, abaxially slightly prominent, base cuneate to narrowly so, margin roughly dentate-serrate, apex acuminate to shortly so. Inflorescence terminal, a corymbose cyme; bracts and bracteoles narrowly lanceolate to linear, persistent. Sterile flowers with sepals 2 or 3, white or pinkish, broadly ovate to suborbicular, 0.5-1.5 cm, base subtruncate. Fertile flowers with calyx tube cupular, 1.5-2 mm; teeth broadly ovate, apex rounded to obtuse. Petals pinkish or white, broadly elliptic to suborbicular, 2.5-3 mm. Stamens 15-25, slightly shorter than petals. Styles 3, ca. 1 mm in fruit. Capsule subglobose, 3-3.5 × 2.5-3 mm. Seeds brown, oblong to ellipsoid, 1-1.4 mm; wings opaque or translucent, darker to lighter than color of seed body. Fl. Jul-Aug, fr. Sep-Oct. (Flora of China)