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Monday, May 30, 2016

Impatiens racemosa

Impatiens racemosa DC
Family: Balsaminaceae
Common name: Yellow Long-Tailed Balsam
Chinese: 总状凤仙花
Nepali: तनतारी Tantari, अनचिरना Anchirna

Description: Plants annual, (3-)20-60 cm tall. Stem erect, branched, glabrous. Leaf petiole (0.2-)1-2.5 cm; leaf blade elliptic-lanceolate or elliptic-ovate, (1.5-)5-10 × (0.5-)2-4(-5) cm, membranous, both surfaces glabrous, setose between teeth, lateral veins 7-9 pairs, base cuneate, attenuate into petiole, margin crenate, apex acuminate. Inflorescences axillary or subterminal, racemose, 2-10 cm, 4-10-flowered; peduncles often over subtending leaves, slender. Pedicels slender, bracteate at base; bracts persistent, ovate-lanceolate, small, apex glandular. Flowers yellow or pale yellow, small; buds apically rounded. Lateral sepals 2, red when dry, falcate or obliquely ovate, small, 2-3 mm, with 1 gland at one side of upper margin, apex aristate. Lower sepal navicular, usually 1.1-1.8 cm deep including spur, narrowed into an incurved, long spur, or spur very short or absent. Upper petal cucullate, orbicular, 3-5 × 5-8 mm, abaxial midvein not thickened; lateral united petals not clawed, 2-lobed; basal lobes ovate to orbicular, 2-5 × 1.5-3 mm; distal lobes broadly dolabriform, 0.7-1.4 × 0.4-0.7 cm, apically 2-lobed, apex rounded; auricles rounded. Anthers obtuse. Capsule linear or narrowly clavate, to 2.5 cm. Seeds many, brown, oblong. Fl. Jun-Aug.

Leaves and roots paste mixed with mustard oil applied for rheumatic pains [CRC World Dictionary of Medicinal and Poisonous Plants]


2 Published articles of Impatiens racemosa
1. Studies of Sino Himalayan Impatiens (Balsaminaceae) II. A New Species and a New Form Similar to Impatiens racemosa DC. from Nepal Himalaya
By: Akiyama, Shinobu; Ikeda, Hiroshi; Acharya, Sunil Kumar
Bulletin of the National Museum of Nature and Science Series B-Botany  Volume: 35   Issue: 2   Pages: 51-56   Published: JUN 2009

2. INTROGRESSION BETWEEN IMPATIENS-RACEMOSA, I-LAXIFLORA AND I-SCABRIDA
By: MEHRA, KL; RISHI, N; KESHORE, H
PROCEEDINGS OF THE INDIAN ACADEMY OF SCIENCES SECTION B  Volume: 71   Issue: 4   Pages: 133-&   Published: 1970

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