Begonia annulata K.Koch, Berliner Allg. Gartenzeitung 1: 76 1837. (syn: Begonia barbata Wall. ex A.DC.; Begonia griffithii Hook.; Platycentrum annulatum (K.Koch) Regel);
E. Himalaya to Indo-China as per WCSP;
Assam; Bangladesh; East Himalaya; Myanmar; Vietnam as per Catalogue of Life;

Rhizomatous herbs, up to 20 cm tall; rootstocks creeping with fibrous roots. Leaves simple, opposite; stipules 1-1.5 cm, subulate; petioles ca. 5-15 cm long, densely pubescent; lamina ca. 10-20 x 8-11 cm, broadly elliptic to ovate, asymmetric, cordate to strongly cordate at base, acute to acuminate at apex, incised to entire along the margins with broad lobes, puberulous to pubescent on both surfaces. Inflorescences ramiflorous, contracted, few flowered; bracts persistent; Male flowers: pedicels ca. 1-2 cm long, glabrous, tepals 2+2, pubescent outside, outerlarger, elliptic, inner smaller, elliptic-lanceolate; stamens numerous, monadelphous at base; Female flowers: tepals 5, outer pubescent, inner gradually smaller; ovary shaggy, 2-celled, 3-winged. Capsules dehiscing by an elliptic line round the face, ca. 1-2.5 cm. Seeds ellipsoid, brown.

Common in moist shady areas, soil clayey with humus in dense forests; 1600-1800 m.
(Attributions- French Institute of Pondicherry as per India Biodiversity Portal)

Fwd: Begonia sp? Anjaw Road,Lohit,Arunachal Pradesh. 3.1.17 : 9 posts by 1 author. Attachments (4)

Pl. check comparative images in efi at Begonia

Does not seem to match with any comparative images at Begonia

Begonia aborenensis

Thanks, … Nearest name with distribution in Arunachal Pradesh I found is Begonia aborensis Dunn.

But images of this species at the following do not match with the images of …

Not at all. B.aborensis. The images what you have send is Begonia burkilli (? ), may be a hybrid. Pl find enclosed the image of aborenensis in the following mail. The mail flowers in B. aborenensis has only 4 petal, while in female FL. It ranges from 2_4. The photo from anjaw is a male flower.

Incidentally, the plant seen at is B. annulata