Impatiens uncipetala C. B. Cl. ex Hook. fil., Rec. Bot. Surv. India 4: 18 1905. ;
E. Nepal to China (NW. Yunnan): China South-Central, East Himalaya, Nepal as per POWO;
Common name: Hook-Petal Balsam
Annual herbs, about 20-40 cm tall. Stems erect, slender, thickened at nodes, sparsely branched, glabrous. Leaves alternate, ovate-lanceolate, about 1.5-4 x 0.7-2 cm across, base cuneate to attenuate, margins crenate with few filiform appendages, apex acute to acuminate, lateral veins about 4-6 on either side of the midrib, green above and paler whitish beneath, petiole slender, about 1-3 cm long. Inflorescence resupinate, axillary or subterminal, 1-2 flowered, peduncles short. Flowers bisexual, zygomorphic, about 3-3.5 cm across, pedicel slender, about 0.5-1 cm long, sepals 3, imbricate, 2 lateral ones flat, small, ovate, apex acuminate, glabrous, about 10 x 5 mm across, posterior sepal (Lip) large, petaloid, navicular, about 10-12 mm long, spurred, spur abruptly constricted, somewhat annular, about 2-2.8 cm long, upper standard petal, suborbicular-obcordate, apex acuminate, green, about 15 mm long, lateral ones (wings or alae), fused in pairs, rose tinged, basal lobes ovate-triangular, distal lobes ligulate, dorsal auricle short. Stamens 5, anthers bi-locular. Ovary 5 locular, superior. Fruit indehiscent, capsule, narrow fusiform or linear, about 1.7-5.4 cm long, glabrous. Seeds many.
Eastern Himalayas, altitude about 1950-2600 m.
Assam, Mizoram, Sikkim, West Bengal
(Attributions- Ganeshaiah, K. N., UAS, Bangalore, India. Kailash, B. R., ATREE, Bangalore, India. Royal Norwegian Embassy grants. Indian Bioresource Information Network (IBIN), Department of Biotechnology, New Delhi, India as per India Biodiversity Portal)
These are two species – notice difference in colour and shape of lateral petals.
Image 1 looks closeness to Impatiens yui S.H.Huang and image 2 is Impatiens puberula DC.. We should ask to Dr. Gogoi regarding this. Researchgate.
Attached for all…………
On the taxonomic identity and lectotypification of Impatiens uncipetala C.B.Clarke ex Hook.f.– RAJIB GOGOI*, WOJCIECH ADAMOWSKI , NORBU SHERPA & GEETAMANI CHHETRI- September 2016 Phytotaxa 273(3):207-211