瓦氏鳳仙花
瓦氏鳳仙花 |
中文學名:瓦氏鳳仙花 拉丁學名:Impatiens waldheimiana Hook. f. 界:植物界 科:鳳仙花科 屬:鳳仙花屬 種:瓦氏鳳仙花 分布區域:四川西部 |
瓦氏鳳仙花(學名:Impatiens waldheimiana),為鳳仙花科鳳仙花屬下的一個植物種。
目錄
形態特徵
高大草本,全株無毛。莖直立,有分枝;枝和小枝斜升。
葉互生,具柄;葉片膜質,卵形,長6-10厘米,頂端尾狀漸尖,最上部葉基部圓形,其餘的基部尖或漸尖,漸狹成長3-5厘米的粗葉柄,向基部邊緣常有具柄的腺體,邊緣具粗圓齒狀鋸齒,齒間無剛毛,側脈5-7對,纖細。
總花梗生於莖枝上部葉腋,長3-4厘米,具2花;花梗極短,中部具1苞片;花大,開展,長4厘米;側生萼片2,卵形,長14毫米,頂端芒狀漸尖,基部心形,彎處狹,中肋背面增厚,中下部具龍骨狀突起。旗瓣大,圓形,寬2.2厘米,基部截形,螺殼狀,中肋背面稍具翅,翅具外彎的突尖;翼瓣具寬短柄,長約3厘米,2裂,基部裂片小,緊貼上部裂片,卵形,頂端漸尖,具細絲,上部裂片大,半月形,頂端鈍,背部具長而反折的小耳;唇瓣寬漏斗狀,長2.5厘米,口部近平展,長25毫米,先端漸尖,基部漸狹成遠短於檐部、內彎頂端2深裂的距。花絲細線形,長5毫米;花葯2室,頂端鈍。
子房卵狀,漸尖。蒴果未詳 [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.
瓦氏鳳仙花產地
四川西部。
未見到標本,上述描述譯自原始記載。據Hooker 的記載,認為此種是一美麗、具大型葉和大花的種,它以側生萼片卵形,基部心形,頂端具芒狀突尖,與其他種相區別。