Impatiens bachii Leveille

Plants annual, 40-50 cm tall, subglabrous or sparsely pilose. Stem erect, lower part often naked, upper part simple or shortly branched. Leaves alternate; petiole short, 3-5 mm, stout; leaf blade gray-green abaxially, green adaxially, narrowly lanceolate or oblong-lanceolate, (5-)8-11 × (1-)1.5-3 cm, rigidly papery, midvein and lateral veins conspicuous abaxially, lateral veins 7 or 8 pairs, curved, base broadly cuneate or subrounded, margin inconspicuously serrulate, teeth mucronulate, apex acute or acuminate. Inflorescences in upper leaf axils, 2-flowered; peduncles spreading or ± recurved, shorter than leaves, 6-7 cm. Pedicels 1.5-2 cm, slender, bracteate at base (but appearing as if at middle in upper flowers); bracts persistent, ovate-lanceolate or lanceolate, 2-3 mm. Flowers white, purple spotted, 3.5-4 cm deep. Lateral sepals 2, broadly ovate-orbicular, 6-7 × ca. 4 mm, subleathery when dry, base inequilateral, apex obtuse, mucronulate, midvein not thickened, 5- or 6-veined. Lower sepal funnelform, ca. 1.6 cm deep, abruptly narrowed into an involute spur 1.5-1.8 cm deep; mouth ca. 1.4 cm wide, tip acuminate. Upper petal suborbicular, ca. 1 × 0.8 cm, apex curved rostellate, abaxial midvein thickened, green carinate; lateral united petals ± clawed, 2-2.2 cm, 2-lobed; basal lobes ovate-oblong; distal lobes dolabriform, longer, apex acute; auricle inflexed, subovate. Filaments linear, 4-5 mm; anthers ovoid, apex acute. Ovary fusiform, 3-4 mm. Capsule linear, 3-3.5 cm. Fl. Aug-Sep.

Yunnan (Dongchuan, Zhenxiong).

● Dense forests, along canals; 1900-2800 m.

Impatiens bachii adalah spesies tumbuhan yang tergolong ke dalam famili Balsaminaceae. Spesies ini juga merupakan bagian dari ordo Ericales. Spesies Impatiens bachii sendiri merupakan bagian dari genus Impatiens. Nama ilmiah dari spesies ini pertama kali diterbitkan oleh H.L�v..

Impatiens bachii là một loài thực vật có hoa trong họ Bóng nước. Loài này được H. Lév. mô tả khoa học đầu tiên năm 1916.

马红凤仙花（学名：Impatiens bachii）为凤仙花科凤仙花属的植物，是中国的特有植物。分布于中国大陆的云南等地，生长于海拔1,900米至2,800米的地区，多生于密林中以及水沟边，目前尚未由人工引种栽培。