伞花木属 san hua mu shu

Trees, dioecious. Leaves paripinnate, alternate, estipulate; leaflets serrate. Thyrses terminal and axillary near apex; bracts and bracteoles very small. Flowers unisexual, actinomorphic. Sepals 5, thinly membranous, imbricate. Petals 5, spoon-shaped, shortly clawed, scale absent. Disk annular, margin crenately lobed. Stamens (male flowers) 8, sometimes 7, exserted; filaments slender, conduplicate in buds; anthers ovoid, small. Ovary (female flowers) obcordiform, 3(or 4)-lobed and 3(or 4)-loculed; ovules 2 per locule, in pairs; style inserted between ovary lobes, erect, filiform. Capsules deeply lobed into 3 schizocarps, usually only 1 or sometimes 2 developed, broadly ovoid or broadly ellipsoid, loculicidal when mature; pericarp leathery. Seeds only 1 per fertile schizocarp, subglobose; testa rigid, arillode absent; hilum small; embryo convolute.

● One species: China.

Lower Taxon

• Eurycorymbus cavaleriei (H. Léveillé) Rehder & Handel-Mazzetti