Olacaceae(Floraofchina)铁青树科.pdf

Flora of China 5: 200-204. 2003. OLACACEAE 铁青树科 tie qing shu ke Qiu Huaxing (邱华兴 Chiu Hua-hsing, Kiu Hua-xing)1; Michael G. Gilbert2 Shrubs, scandent shrubs, trees, or lianas, sometimes hemiparasitic, often glabrous. Lateral shoots sometimes with bud scales at base. Stipules absent. Leaves alternate, rarely opposite; petiole well developed; leaf blade simple, margin entire; veins usually pinnate, sometimes palmate and 3ñ5-veined. Inflorescences axillary, rarely also terminal, cymose, fasciculate, racemelike, spikelike, or umbellate, mostly small; bracts small and inconspicuous. Flowers usually bisexual, actinomorphic, 3ñ7-merous, sometimes heterostylous. Calyx small at anthesis, cupular, discoid, or lobed, sometimes accrescent to partly or wholly covering fruit, sometimes fused to fruit (in Schoepfia). Petals free or basally connate, valvate. Disk cuplike or annular, rarely free glands, sometimes accrescent and covering fruit apex (in Schoepfia). Stamens 3ñ15, rarely in part staminodes, epipetalous; anthers basi- or medi-fixed, usually 2- loculed, longitudinally dehiscent. Ovary usually superior, rarely semisuperior but sometimes apparently inferior through fusion with calyx, 2ñ5-loculed or semiloculed with apex of ovary 1-loculed; ovules solitary in each locule or semilocule, pendent from apex of free central placenta, usually anatropous, integuments 1 or 2. Style terminal, simple; stigma 2ñ5-lobed. Fruit a drupe, sometimes with an accrescent calyx. Seed solitary; testa thin; endosperm abundant; embryo small; cotyledons 2ñ4. Between 23 and 27 genera and 180ñ250 species: tropical and warm-temperate regions worldwide; five genera (one endemic) and ten species (three endemic) in China. Ling Yeou-ruenn.