《中国植物志》|| 防己科 MENISPERMACEAE ||粉防己亚属 Subgen. Botryodiscia (Diels) Lo ||粉防己 Stephania tetrandra S. Moore

13. 粉防己（通称） 图版11：7-9
Stephania tetrandra S. Moore in Journ. Bot. 13: 225. 1875, Diels in Engler, Pflanzenreich IV. 94: 282. 1910; 中国高等植物图鉴1: 784, 图1568. 1372; Lo in Acta Phytotax. Sin. 16: 40, fig. 7 (7-9). 1978; 广东植物志1: 42, 图43. 1987.
草质藤本，高约1-3米；主根肉质，柱状；小枝有直线纹。叶纸质，阔三角形，有时三角状近圆形，长通常4-7厘米，宽5-8.5厘米或过之，顶端有凸尖，基部微凹或近截平，两面或仅下面被贴伏短柔毛；掌状脉9-10条，较纤细，网脉甚密，很明显；叶柄长3-7厘米。花序头状，于腋生、长而下垂的枝条上作总状式排列，苞片小或很小；雄花：萼片4或有时5，通常倒卵状椭圆形，连爪长约0.8毫米，有缘毛；花瓣5，肉质，长0.6毫米，边缘内折；聚药雄蕊长约0.8毫米；雌花：萼片和花瓣与雄花的相似。核果成熟时近球形，红色；果核径约5.5毫米，背部鸡冠状隆起，两侧各有约15条小横肋状雕纹。花期夏季，果期秋季。
产于浙江、安徽、福建、台湾、湖南、江西、广西、广东和海南。生于村边、旷野、路边等处的灌丛中。模式标本采自江西九江。
本种肉质主根入药，称粉防己，味苦辛，性寒，功能祛风除湿、利尿通淋。含多种生物碱，其中粉防己碱（特船君）(tetrandrine) 治风湿关节炎和高血压症均有效。

《Flora of China》|| Menispermaceae || Stephania ||粉防己 Stephania tetrandra

11. Stephania tetrandra S. Moore, J. Bot. 13: 225. 1875.

粉防己 fen fang ji

Herbaceous vines, 1-3 m high. Main root fleshy, cylindrical. Branchlets longitudinally striate. Petiole 3-7 cm; leaf blade narrowly peltate, broadly triangular, sometimes triangular-rotund, 4-7 × 5-8.5 cm, papery, both surfaces pubescent or only abaxially, base slightly emarginate or truncate, apex with a mucronate acumen, palmately 9- or 10-veined, more slender, reticulation very dense, conspicuous. Inflorescences capitate; bracts small or very small. Male flowers: sepals 4 or sometimes 5, usually obovate-elliptic, including claw ca. 0.8 mm; petals 5, fleshy, ca. 0.6 mm, margin involute; synandrium ca. 0.8 mm, anthers 4. Female flowers: sepals and petals as in male flowers. Drupes red, subglobose when mature; endocarp ca. 5.5 mm in diam., abaxially bearing 4 rows of ornamentation, 2 inner rows columnar and very prominent; condyle usually not perforate. Fl. summer, fr. autumn.

● Shrublands at village margins, open fields, roadsides. Anhui, Fujian, Guangdong, Guangxi, Hainan, Hubei, Hunan, Jiangxi, Taiwan, Zhejiang.