瓦氏凤仙花查看源代码讨论查看历史
瓦氏凤仙花 |
中文学名:瓦氏凤仙花 拉丁学名:Impatiens waldheimiana Hook. f. 界:植物界 科:凤仙花科 属:凤仙花属 种:瓦氏凤仙花 分布区域:四川西部 |
瓦氏凤仙花(学名:Impatiens waldheimiana),为凤仙花科凤仙花属下的一个植物种。
形态特征
高大草本,全株无毛。茎直立,有分枝;枝和小枝斜升。
叶互生,具柄;叶片膜质,卵形,长6-10厘米,顶端尾状渐尖,最上部叶基部圆形,其余的基部尖或渐尖,渐狭成长3-5厘米的粗叶柄,向基部边缘常有具柄的腺体,边缘具粗圆齿状锯齿,齿间无刚毛,侧脉5-7对,纤细。
总花梗生于茎枝上部叶腋,长3-4厘米,具2花;花梗极短,中部具1苞片;花大,开展,长4厘米;侧生萼片2,卵形,长14毫米,顶端芒状渐尖,基部心形,弯处狭,中肋背面增厚,中下部具龙骨状突起。旗瓣大,圆形,宽2.2厘米,基部截形,螺壳状,中肋背面稍具翅,翅具外弯的突尖;翼瓣具宽短柄,长约3厘米,2裂,基部裂片小,紧贴上部裂片,卵形,顶端渐尖,具细丝,上部裂片大,半月形,顶端钝,背部具长而反折的小耳;唇瓣宽漏斗状,长2.5厘米,口部近平展,长25毫米,先端渐尖,基部渐狭成远短于檐部、内弯顶端2深裂的距。花丝细线形,长5毫米;花药2室,顶端钝。
子房卵状,渐尖。蒴果未详 [1]
Plants glabrous. Stem erect; branches and branchlets ascending. Leaves alternate; petiole 3-5 cm, stout; leaf blade ovate, 6-10 cm, membranous, often with stipitate glands at basal margin, lateral veins 5-7 pairs, fine, bases of lower and middle leaves cuneate or narrowly cuneate, attenuate into petiole, base of upper ones rounded, margin coarsely crenate-serrate, apex caudate-acuminate. Inflorescences in upper leaf axils, 2-flowered; peduncles 3-4 cm. Pedicels very short, bracteate at middle. Flowers spreading, large, ca. 4 cm deep. Lateral sepals 2, ovate, ca. 1.4 cm, base cordate, apex aristate-acuminate, abaxial midvein thickened, carinate below middle. Lower sepal broadly funnelform, ca. 2.5 cm deep, gradually narrowed into an incurved spur; spur shorter than limb, 2-lobed; mouth subvertical, ca. 2.5 cm, tip acuminate. Upper petal orbicular, large, ca. 2.2 cm, cucullate, base truncate, apex recurved-rostellate, abaxial midvein slightly thickened; lateral united petals broadly shortly clawed, ca. 3 cm, 2-lobed; basal lobes small, ovate, apex acuminate, with a long filamentous hair; distal lobes lunar, large, apex obtuse; auricle inflexed, long. Filaments linear, ca. 5 mm; anthers obtuse. Ovary ovoid. Capsule unknown. Fl. Jul-Aug.
● W Sichuan.
瓦氏凤仙花产地
四川西部。
未见到标本,上述描述译自原始记载。据Hooker 的记载,认为此种是一美丽、具大型叶和大花的种,它以侧生萼片卵形,基部心形,顶端具芒状突尖,与其他种相区别。