 |
| Begonia pasighatensis D.Borah, Taram & Wahlsteen, in Borah, Taram & Wahlsteen, 2021. |
Abstract
A new species, Begonia pasighatensis D.Borah, Taram & Wahlsteen (Begoniaceae) is described and illustrated. It is easily distinguished from all other species in the section Platycentrum by its swollen, spherical ovary with two wings reduced to ridges and a long, pointing upper wing. The new species belongs to Begonia section Platycentrum and is distributed in southern Arunachal Pradesh in East India. We also report a finding of the rare species Begonia scintillans in the Namdapha National Park. This species is similar to B. thomsonii but differs in number of styles and color of the indumentum. Both species are illustrated by photographs and a distribution map is provided.
Keyword: Begonia pasighatensis, Begonia thomsonii, Diploclinium, Platycentrum, new species, rediscovery, taxonomy
 |
| Begonia pasighatensis D.Borah, Taram & Wahlsteen, A. Habit. B. & C. Staminate flowers. D. Androecium. E. Stamens. F. Pistillate flowers and ovary. G. Immature seed capsules. H. Stipule. I. Leaves showing different shapes. |
Begonia pasighatensis D.Borah, Taram & Wahlsteen,
sp. nov.
Diagnosis: Begonia pasighatensis is easily
distinguished from all other species in the section
Platycentrum by its swollen, spherical ovary with two
wings reduced to ridges and a long, pointing upper wing.
Distribution: India, Arunachal Pradesh, East Siang
District, Pasighat, 210–500 m,
Etymology: The specific epithet refers to Pasighat,
from where the species was discovered.
Dipankar Borah, Momang Taram and Eric Wahlsteen. 2021. A New Begonia Species from Arunachal Pradesh, and Some Notes on Begonia scintillans. Taiwania. 66(4); 450-454. DOI: 10.6165/tai.2021.66.450
