钻地风属zuandifengshu.PDF

Flora of China 8: 408–410. 200 1. 24. SCHIZOPHRAGMA Siebold Zuccarini, Fl. Jap. 1: 58. 1837–1838. 钻地风属 zuan di feng shu Wei Zhaofen (卫兆芬 Wei Chao-fen); Bruce Bartholomew Shrubs often scandent, deciduous. Stems prostrate or climbing, with aerial roots. Winter bud scales in 2–4 pairs, dark brown, pubescent. Leaves opposite; leaf blade simple, margin entire, slightly serrulate, or roughly serrate. Inflorescence terminal, corymbose or forming a thyrse. Flowers both fertile and sterile or fertile only. Sterile flowers usually with 1 expanded sepal, petaloid, margin entire. Fertile flowers small. Calyx tube adnate to ovary; teeth persistent. Petals free, valvate in bud, falling early. Stamens 10, free; filaments filiform; anthers ovoid, apex obtuse. Ovary subinferior, obconical to turbinate, 4- or 5-loculed; placentation axile; ovules numerous. Style 1, short; stigma capitate, 4- or 5-fissured. Fruit a loculicidal capsule, obconical to turbinate, striate, apex projected or truncate. Seeds very numerous, fusiform, with long, narrow wings at both ends. About ten species: China, Japan, Korea; nine species (endemic) in China. 1a. Flowers fertile only 9. S. crassum 1b. Flowers both fertile and sterile. 2a. Leaf blade abaxially densely granulate glandular. 3a. Secondary leaf veins usually unbranched; leaf blade elliptic, base cuneate to subobtuse 8. S. elliptifolium 3b. Secondary leaf veins usually 1–4-branched; leaf blade narrowly or broadly ovate, base rounded or subcordate. 4a. Leaf blade narrowly ovate, abaxially glabrous or sometimes barbate at vein axils .. 6. S. hypoglaucum 4b. Leaf blade broadly ovate, abaxially densely brownish pubescent along veins 7. S. fauriei 2b. Leaf blade abaxially not granulate glandular. 5a. Leaf blade