Begonia acetosella

Begonia acetosella Craib, Bull. Misc. Inform. Kew 1912: 153 1912. (syn: Begonia acetosella var. acetosella ; Begonia tetragona Irmsch.);

China South-Central; East Himalaya; Laos; Myanmar; Thailand; Tibet; Vietnam as per Catalogue of Life;

https://08511630493324166816.googlegroups.com/attach/4d34411127a96/Begonia%20sp..JPG?part=0.1&view=1&vt=ANaJVrEMJCY01mHQ3Sgkroh3cMUcHpUVITN4JIkuzpnKx6QNeN2o4pqTqDvgvk2NnP6ETzzNEQ5FyWCronnV_B0Ksjgpk9ACp0i0MODNRqzqDAk4fXjp1is
 
MS Aug.,2017/02 Begonia sp. for Id. : 8 posts by 3 authors. Attachments (2)
Location : Kaukam, Mizoram
Date : 08-08-2017
Habit : Herb
Habitat : Wild
Close ups of flowers please 
https://08511630493324166816.googlegroups.com/attach/62d8085b37614/Begonia%20sp..JPG?part=0.1&view=1&vt=ANaJVrHybcEIBqhkk3jhAPGZWRzP8-n-C0MOMeCpoDuz1SbyZ5OMWFpgMhFHKztQ0wXj_z9yqWmYzOrdh9PVJkl14zaqT9nGRyoyvOxERluUUzZR1Jv7rRQ
 
Close up flower
Attachments (1)
Begonia nepalensis (A.DC.) Warb. 
Does not match with high resolution specimen of Begonia nepalensis at gbif & others at eol (as the inflorescence in axillary here):
Also does not have range as per
https://08511630493324166816.googlegroups.com/attach/69df1f7975d16/Begonia%20sp..JPG?part=0.1&view=1&vt=ANaJVrG2FzLB3NPlaz6fjhkSAUOy1lmV7MSgXwOTrsLAD84KXOaq8dLELG6HnkuBQ63YlHK7u5peM9o73qZDimL1Y3uTjeGpHhtOvvhMBMsFBq9-YYEBEJk
 
Same Begonia
Attachments (1)
Hmm on looking at this photo it could be Begonia longifolia Blume, seeing as all the flowers are presenting with 3 styles and not the 4 one would expect of Begonia acetosella.
This is B. acetosella - did you try the key?
The photo is not great, but the species is dioecious and has a 4-locular fruit, so is B. acetosella.
... knows the two species better than I do. I would agree with his identification and these two species can be variable in style and tepal number.


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