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Begonia arunachalensis D.Borah & Wahlsteen, in Borah, Taram, Yama et Wahlsteen, 2021. |
ABSTRACT
A new species, Begonia arunachalensis D.Borah & Wahlsteen (Begoniaceae) is described and illustrated. It is distributed in Papum Pare District of Arunachal Pradesh where it grows near streams in rock crevices. Begonia arunachalensis is similar to B. brevicaulis A.DC. but differs in its pendent fruits, number of locules and capsule wings, and longer lateral wings. It belongs to Begonia sect. Diploclinium.
Keywords. Eastern Himalaya, morphology, Papum Pare, taxonomy
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| Begonia arunachalensis D.Borah & Wahlsteen. A. Habitat. B. Habit. All photographed near Kimin, Papum Pare disctrict, Arunachal Pradesh. (Photos: D. Borah) |
Begonia arunachalensis D.Borah & Wahlsteen, sp. nov.
Similar to Begonia brevicaulis A.DC. but can be distinguished by its pendent (vs
recurved) fruit, number of locules 3–4 (vs 2), capsule wings 2–5 (vs 3) and lateral
wings to 3 cm (vs 0.7 cm). From Begonia picta Sm. it differs in lateral wings to 3
cm (vs 1.2 cm), pistillate flower with 4 tepals (vs mostly 5) and c. 25 stamens (vs
numerous).
Etymology. The specific epithet refers to the state of Arunachal Pradesh, where the
species was discovered.
D. Borah, M. Taram, L. Yama and E. Wahlsteen. 2021. Begonia arunachalensis (Begoniaceae), A New Tuberous Species of Begonia from Arunachal Pradesh, India. Gardens’ Bulletin Singapore. 73(2); 475 - 480.
