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銅壁關鳳仙花檢視原始碼討論檢視歷史

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銅壁關鳳仙花

中文學名:銅壁關鳳仙花

拉丁學名:Impatiens tongbiguanensis

S. Akiyama et H. Ohba

界:植物界

科:鳳仙花科

屬:鳳仙花屬

種:銅壁關鳳仙花

銅壁關鳳仙花,一年生草本,高30-40厘米,全株無毛。莖直立,不分枝或上部具腋芽。葉互生,具柄,沿莖全部着生。葉柄長1-1.5厘米或上部葉無柄,產雲南西部盈江銅壁關。生於河岸邊或闊葉林下陰濕處,海拔1000-1400米。 [1]

銅壁關鳳仙花形態特徵

葉片線狀橢圓形或線狀披針形,長13-18厘米,寬1-1.5厘米,頂端漸尖,基部漸狹,邊緣具淺圓齒,側脈7-8對,兩面無毛。花總梗生於上部葉腋,短於葉,直立或斜升,長5-8厘米,無毛,具8-12花。

花梗細,長1.5-2厘米,基部具苞片;苞片舟狀,卵形,長6-10毫米,頂端尖,無芒尖,脫落。

花黃色,長2.5厘米,寬3.5厘米,側生萼片4,外面2鐮狀橢圓形,長6毫米,頂端尖,無尖頭,內面2線狀鑽形,長約3毫米,膜質;旗瓣彎寬橢圓形,長12毫米,寬約8毫米,兜狀,背面中肋無雞冠狀突起;冀瓣黃色,具粉紅色斑點,無柄,長約2.4厘米,2裂,基部裂片披針形或狹卵形,長12毫米,寬6毫米,頂端圓形,上部裂片披針形,長14毫米寬5毫米,背部無小耳;唇瓣黃色,檐部舟狀,基部狹成長14毫米彎曲或捲曲的距。

花絲線形,花葯鈍,蒴果未詳。花期10月。

Plants annual, 30-40 cm tall, glabrous. Stem erect, simple or axillary, hidden buds inconspicuous in upper part. Leaves alternate, remote; petiole 1-1.5 cm, or upper leaves sessile; leaf blade linear-elliptic, 13-18 × 1-1.5 cm, glabrous, lateral veins 7 or 8 pairs, base gradually narrowed, margin shallowly crenate, apex acute. Inflorescences in upper leaf axils, 8-12-flowered; peduncles erect or obliquely ascending, shorter than leaves, 5-8 cm, glabrous. Pedicels 1.5-2 cm, slender, bracteate at base; bracts caducous, navicular, ovate, 0.6-1 cm, apex acute. Flowers yellow, ca. 2.5 cm, ca. 3.5 cm deep. Lateral sepals 4; outer 2: falcate-elliptic, ca. 6 mm, apex acute; inner 2: linear-subulate, ca. 3 mm, membranous. Lower sepal yellow, limb navicular, ca. 1.4 cm, ca. 3.2 cm deep, narrowed into a curved spur. Upper petal cucullate, bent, broadly elliptic, ca. 1.2 × 0.8 cm, abaxial midvein not cristate; lateral united petals yellow, with reddish spots, 2-lobed; basal lobes broadly lanceolate or narrowly ovate, ca. 1.2 × 0.6 mm, apex rounded; distal lobes lanceolate, ca. 1.4 × 0.5 cm, apex rounded; auricle absent. Filaments linear; anthers obtuse. Capsule not seen. Fl. Oct. 2n = 18*.

● Understories of broad-leaved forests, riverbanks, shaded moist places; 1000-1400 m. W Yunnan (Yingjiang).

銅壁關鳳仙花生長環境

生長於海拔1000-1400米的河岸邊或闊葉林下陰濕處。

銅壁關鳳仙花分布範圍

產自雲南西部盈江銅壁關。

銅壁關鳳仙花相似物種

此種近似鐮萼風仙花 I. drepanophora Hook. f., 區別在於花黃色,側生萼片4,葉線狀橢圓形沿莖緊密着生。後者萼片2枚,鐮刀狀,頂端具長芒尖,唇瓣口部先端具綠色的長角,基部具螺旋狀內彎的長距,與前者有別

參考來源

  1. 銅壁關鳳仙花, 植物智, 2020-01-18