白花凤仙花Impatiens wilsonii Hook. f.

科名：凤仙花科 Balsaminaceae

属名：凤仙花属 Impatiens

《中国植物志》第47(2)卷049页
  23. 白花凤仙花（中国高等植物图鉴）图版8: 1-7
  Impatiens wilsonii Hook. f. in Nouv. Arch. Mus. Paris, ser. 4, 10: 245. 1908; 中国高等植物图鉴2: 737. 图3204. 1972; Y. L. Chen in Acta Phytotax. Sin. 16 (2): 38. 1978, in clavi.
  直立草本，高30-50厘米。茎粗状，节膨大。叶互生，常密生于茎上部，矩圆状倒卵形，或倒披针形，长8-15厘米，宽2.5-6厘米，先端急尖或渐尖，基部长楔形，边缘有疏圆齿，齿间有小刚毛，侧脉6-8对，背面沿叶脉疏被短柔毛；叶柄短或几无柄，有疏腺体。总花梗生于顶叶腋，长4-6厘米，花4-10朵，排成总状花序；花大，白色；侧生萼片4，外面2个卵形，内面2个马刀形；旗瓣椭圆形，先端微凹，有小突尖，背面中肋有狭龙骨突；翼瓣无柄，2裂，基部裂片矩圆形，上部裂片大，斧形，背部有短耳；唇瓣囊状，基部圆形，有内弯的短距；花药钝；子房纺锤形。
  特产四川峨眉山。生于沟边或林下阴湿处，海拔800-1000米。

《Flora of China》 Vol. 12 (2007)
Impatiens wilsonii  J. D. Hooker
白花凤仙花   bai hua feng xian hua
Plants erect, 30-50 cm. Stem robust, nodes turgid. Leaves alternate, often crowded at upper part of stem, shortly petiolate or subsessile; petiole with sparse glands; leaf blade oblong-obovate or oblanceolate, 8-15 × 2.5-6 cm, setose between teeth, adaxially sparsely pilose on veins, lateral veins 6-8 pairs, base long cuneate, margin remotely crenate, apex acute or acuminate. Inflorescences in terminal leaf axils, racemose, 4-10-flowered; peduncles 4-6 cm. Flowers white, large. Lateral sepals 4, outer 2: ovate; inner 2: falcate. Lower sepal saccate, constricted into a curved, short spur. Upper petal elliptic, apex emarginate, mucronulate, abaxial midvein carinate; lateral united petals not clawed, 2-lobed; basal lobes oblong; distal lobes dolabriform, large; abaxial auricle short. Anthers obtuse. Ovary fusiform. Capsule unknown. Fl. Aug-Sep.
● Forest understories, along canals, shaded moist places; 800-1000 m. Sichuan (Emei Shan).