Description from Flora of China
Shrubs stellate hairy. Branchlets opposite; buds enclosed by imbricate scales. Leaves opposite, exstipulate, subdeciduous. Inflorescences racemose, paniculate, corymbose, or cymose, rarely a solitary flower. Calyx tube adnate to ovary, campanulate, 5-lobed. Petals 5, induplicate, valvate, or imbricate. Stamens 10(-15), 2-seriate; filaments subulate, flat, or dilated and apex 2-dentate; anthers shortly stalked, subglobose. Ovary inferior, rarely subinferior, 3-5-loculed; ovules numerous, in many series on fleshy placenta. Styles 3(-5), free; stigma terminal or decurrent. Fruit a capsule, subglobose, 3(-5)-valved, dehiscing loculicidally or between styles. Seeds numerous, oblong, compressed; testa membranous, reticulate, apex winged; embryo borne in middle of fleshy endosperm.
Several species are cultivated as ornamentals.
About 60 species: warm temperate regions of the N hemisphere; 50 species (41 endemic, two introduced) in China.
(Authors: Huang Shumei (Hwang Shu-mei); Hideaki Ohba; Shinobu Akiyama)