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| Impatiens dorjeekhandui Chowlu, S. S. Dash & Gogoi, in Chowlu, Borah, Dash, Adamowski & Gogoi, 2017. |
Abstract
Impatiens dorjeekhandui Chowlu, S. S. Dash & Gogoi, a new species from Zemithang area in Tawang district of Arunachal Pradesh, India is described and illustrated. This endemic new species is distinguished from closely allied Impatiens nagorum Gogoi, Moaakum & S. Dey, I. medogensis Y. L. Chen and I. balfourii Hooker.
Keywords: Tawang, Description, Eastern Himalaya, NE India.
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| Impatiens dorjeekhandui Chowlu, S. S. Dash & Gogoi. A. Lower part of plant with swollen nodes and numerous branches, B. Upper part of plant with inflorescences, C. Frontal view of flower with visible horn on dorsal petal, D. Lateral view of inflorescence, E. Front view of flower, F. Lateral sepals, G. Lower sepal and spur, H. Dorsal petal upper view, I. United lateral petals, J. Androecium. |
Diagnosis: Close to Impatiens nagorum Gogoi,
Moaakum & S. Dey (275:2017) in small stature and general shape of flower, particularly the small basal lobe of
the united lateral petals, but differs due to whitish dorsal
petal and basal lobe of lateral united petals, long straight
tubular lower sepal with tip area forming to a abruptly
hooked spur and dorsal petal with a horn like appendage, also close to I. medogensis Y. L. Chen (381:1980) due
to general shape of flower but the latter is having greenish yellow dorsal petal and irregularly curved but non
hooked spur in the lower sepal; also shows superficial
closeness to I. balfourii Hooker (t. 7878. 1903) but the
latter is different due to its slander straight spur and glabrous, non bristle hairy on lateral sepals
Distribution: Impatiens dorjeekhandui is known only
from its type locality, i.e. in the Zimithang area of Tawang
district of Arunachal Pradesh with a good numbers of
populations.
Ecology and Habitat: Impatiens dorjeekhandui grows in
margins of moist temperate broadleaved forest in shady
along with Elatostema sp., Pouzolzia sp., Impatiens arguta
Hook. f. & Thomson (137:1859).
Etymology: The species epithet is chosen after Late Dorjee
Khandu, former Chief Minister of Arunachal Pradesh for
his service to the nation and contribution for better development in the Himalayan state.
Krishna Chowlu, Souravjyoti Borah, Sudhansu Sekhar Dash,
Wojciech Adamowski and Rajib Gogoi. 2017. Impatiens dorjeekhandui (Balsaminaceae) A New Species of Impatiens from Arunachal Pradesh, India. Nelumbo. 59(2); 139-144. DOI: 10.20324/nelumbo/v59/2017/120458
