无距凤仙花Impatiens margaritifera 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104页
  83．无距凤仙花（植物分类学报）图版28: 1-7
  Impatiens margaritifera Hook. f. in Nouv. Arch. Mus. Nat. Hist. Paris ser. 4. 10: 249. pl. 2. 1908; Hand. -Mazz., Symb. Sin. 7: 650. 1933; Y. L. Chen in Acta Phytotax. Sin. 16 (2): 45. 1978, in clavi; 云南种子植物名录上册: 303. 1984; 西藏植物志3: 185. fig. 77. 1986; 横断山区维管植物上册: 1144. 1993.
  一年生草本，高达40-50厘米。茎直立，无毛，分枝或不分枝。叶互生，卵形，薄膜质，长3-10厘米，宽1.5-3.5厘米，顶端渐尖，基部楔形，具2个大腺体，边缘有粗圆齿，齿间有小刚毛，侧脉5-7对；叶柄长1-5厘米。总花梗细长，腋生，花较小，通常6-8个排成总状花序；花梗短，基部有线形或线状长圆形苞片；苞片长2-4毫米，急尖，脱落。花白色，长达2厘米；侧生萼片2，小，卵状圆形，顶端具小突尖；旗瓣椭圆状倒卵形或近圆形，背面中肋具细尖头；翼瓣狭，具宽柄，基部裂片卵状长圆形，上部裂片较长，狭斧形，背面有宽小耳；唇瓣舟状，基部肿胀，无距；花药钝。蒴果线形，长达1.8厘米，种子少数，倒卵形。花期7-9月。

《Flora of China》 Vol. 12 (2007)
Impatiens margaritifera  J. D. Hooker
无距凤仙花   wu ju feng xian hua
Plants annual, 40-50 cm tall, glabrous. Stem erect, branched or simple. Leaves alternate or opposite in lower and middle parts of stem; petiole 1-5 cm; leaf blade ovate, 3-10 × 1.5-3.5 cm, membranous, with 2 large basal glands, setose between teeth, lateral veins 5-7 pairs, base cuneate, margin coarsely crenate, apex acuminate. Inflorescences axillary, racemose, (3-)6-8-flowered. Pedicels short, bracteate at base; bracts caducous or persistent, linear or linear-oblong, 2-4 mm, apex acute. Flowers white, small, ca. 2 cm. Lateral sepals 2, ovate-orbicular, small, mucronulate. Lower sepal navicular, spur absent. Upper petal elliptic-obovate or suborbicular, apex mucronulate; lateral united petals broadly clawed, 2-lobed; basal lobes ovate-oblong or suborbicular; distal lobes narrowly dolabriform or oblong-dolabriform, longer; auricle broad. Anthers obtuse. Capsule linear, to 1.8 cm. Seeds few, obovoid. Fl. Jul-Sep.
● Understories of Abies forests, forest margins, grasslands, riverbanks, streamsides, moist places; 2600-4000 m. SW Sichuan, Xizang, NW Yunnan.