栏目

菱叶凤仙花Impatiens rhombifolia Y. Q. Lu et Y. L. Chen

菱叶凤仙花Impatiens rhombifolia Y. Q. Lu et Y. L. Chen

科名:凤仙花科 Balsaminaceae

属名:凤仙花属 Impatiens

《中国植物志》第47(2)卷127页
  107. 菱叶凤仙花(云南植物研究)图版37: 1-7
  Impatiens rhombifolia Y. Q. Lu et Y. L. Chen, in Acta Bot. Yunn. 12 (1): 27. fig. 5. 1990.
  一年生草本,高20-30厘米,光滑无毛,具匍匐生根茎。茎不分枝。叶互生,具短柄;叶片菱形或近菱形,长2-5厘米,宽1.2-1.6厘米,顶端渐尖或锐尖,基部楔形,具有柄小腺,边缘具锯齿,侧脉5-6对,两面无毛。总花梗长2-3厘米,光滑,在上部叶腋内单生,常2花。花梗细,长1厘米,基生一苞片;苞片钻形,长约3毫米,宽1-1.5毫米。花黄色,常为毛茛黄,宽达1.5厘米,侧生萼片2枚,小,卵圆,顶端锐尖,黄绿色;旗瓣大,圆形,宽1.5厘米,长1.3厘米,顶端微两裂,裂片间有小微尖头,基部凹陷;翼瓣长1.8厘米,基部裂片圆。长6-7毫米,具枣红色斑点,上部裂片斧状,顶端下背部常有刻缺,背耳狭,反折;唇瓣长2厘米,檐部舟形,口部平展而钝,距细长,花时开展变直,花丝细。花药微尖。子房长纺锤形,直,锐尖。蒴果线形,长2厘米,少种子。种子小,卵球形,褐色,长约2毫米,宽1.5毫米。
  产四川(峨眉山)。生于路旁草地,海拔800-1000米。
  本种不同于峨眉山其他风仙花在于侧生萼小,翼瓣两裂片近相等,花期时距变直,而蕾期距卷曲。形态上接近 I. procumbens Franch., 但叶为菱形。

《Flora of China》 Vol. 12 (2007)
Impatiens rhombifolia  Y. Q. Lu & Y. L. Chen
菱叶凤仙花   ling ye feng xian hua
Plants annual, 20-30 cm tall, glabrous. Stem prostrate, simple. Leaves alternate, petiolate; leaf blade rhombic or subrhombic, 2-5 × 1.2-1.6 cm, glabrous, lateral veins 5 or 6 pairs, base cuneate, with stipitate glands, margin serrate, apex acuminate or acute. Inflorescences in upper leaf axils, often 2-flowered; peduncles 2-3 cm. Pedicels ca. 1 cm, slender, bracteate at base; bracts subulate, ca. 3 mm. Flowers yellow, ca. 1.5 cm wide. Lateral sepals 2, yellow-green, ovate-orbicular, small, apex acute. Lower sepal navicular, ca. 2 cm deep, narrowed into an erect spur; spur long, slender; mouth vertical, tip obtuse. Upper petal orbicular, large, ca. 1.3 × 1.5 cm, apex slightly retuse, mucronulate, abaxial midvein thickened; lateral united petals ca. 1.8 cm, 2-lobed; basal lobes red spotted, orbicular, 6-7 mm; distal lobes dolabriform, apically retuse; auricle inflexed, narrow. Filaments linear; anthers small, apex acute. Ovary erect, fusiform. Capsule linear, ca. 2 cm. Seeds few, ovoid-globose, ca. 2 mm. Fl. Aug-Sep.
● Grasslands at roadsides; 800-1000 m. Sichuan (Dujiang Yan, Emei Shan, Hongya).

TOP