东京桐属 dong jing tong shu

Authors: Bingtao Li & Michael G. Gilbert

Loerzingia Airy Shaw.

Trees, dioecious; indumentum of stellate hairs. Leaves alternate; petiole long, with 2 apical glands; leaf blade simple; basal veins 3, lateral veins prominent. Inflorescences terminal, branched thyrses, female inflorescences narrow and shorter than male. Male flowers: calyx campanulate, shallowly 5-fid; petals 5, alternating with sepals, valvate; disk 5-parted; stamens 7, in 2 series; outer 5 filaments free, inner 2 usually connate to below middle; rudimentary ovary absent. Female flowers: sepals triangular; petals as in male; disk cupular, 5-fid; ovary hairy, 3-locular; ovules 1 per locule; styles 3, partly connate. Fruit a drupe, subglobose, indehiscent; epicarp crustaceous; endocarp woody. Seeds ellipsoid; seed coat hard-crustaceous; endosperm spongy.

Two species: China, Indonesia (Sumatra), Vietnam; one species in China.

Lower Taxon

• Deutzianthus tonkinensis Gagnepain