Begonia malabarica

India, Sri Lanka as per WCSP;

Common name: Malabar Begonia • Malayalam: കയ്യാലപ്പുളി kayyalappuli, ജനാംകൊല്ലി janankolli, രക്തസൂരി raktasuri, ചെറിയ ഞെരിഞ്ഞന്പുളി tsjeria-narinampuli 

Shrubs; stems reddish, glabrous. Leaves to 18 x 10 cm, ovate, unequally cordate at base, entire or shallowly and broadly dentate, glabrous, nerves prominent, reddish, dividing after the middle of the lamina; petiole 2-5 cm long; stipules 2.5 x 0.8 cm, oblong-lanceolate, glabrous, whitish. peduncle 3-4 cm long, axillary, dichotomously branched; cymes 5 cm across. Flowers few; pedicels 1 cm long; male sepals 4, outer 10 mm across, orbicular, pale pink; inner smaller, anthers truncate. Capsule 2 x 3.5 cm, obovate, 3-winged; wing horizontal at apex; placentas 2-fid; seeds many, minute, oblong, cylindrical, ridged and reticulate at one end.  
Flowering and fruiting: December-March 
Evergreen forests  
Peninsular India
(From  India Biodiversity Portal (Begonia fallax A. DC. )
Attach a  picture of Begonia malabarica Lamk. This is the true Begonia malabarica rediscovered from Kerala after Rheede's discovery
What do you mean by " true Begonia malabarica rediscovered from Kerala after Rheede's discovery"
I found some reference from a book which states its var. dipetala to be a syn. of Begonia dipetala Graham as below.
Another reference from the same book on Begonia malabarica:

Begonia malabarica paper:  Please circulate the research paper among our members for their use.
I could not but ... did and sent me a pdf...
your paper is well done..

QUERY :: Malayalam name of Begonia malabarica Lam.: Please validate name put in native script: ചെറിയ ഞെരിഞ്ഞന്പുളി ... for tsjeria-narinampuli.
tsjeria-narinampuli ... Google Search
ചെറിയ ഞെരിഞ്ഞന്പുളി ... A Malayalam and English dictionary by Hermann Gundert 

it is called in the name " tsjeria-narinampuli" by Rheede in Hortus malabaricus ". It is also known in following names in Malayalam as "Kalpuli" and kayyalapulian"
ref: N. Sasidharan, Floundering plants of Kerala
thank you very much Manudev ji for the Malayalam names other than ചെറിയ ഞെരിഞ്ഞന്പുളി tsjeria-narinampuli
I got the following from my facebook friend ...:
കയ്യാലപ്പുളി kayyalappuli, ജനാംകൊല്ലി janankolli, രക്തസൂരി raktasuri.
He refers a Plant Dictionary in Malayalam written by Prof. Mathew Thamarakkad and Dr. M Ramesh.
Sreevilliputhur 170713 TBN 1 for id : Attachments (3).  5 posts by 3 authors.
Please identify this plant details of which are as follows:
Date           : 16.04.13                                                             
Location     :Sreevilliputhur Grizzled Squirrel sanctuary, Western ghats, Virudhunagar dt, Tamilnadu
Altitude      :3000ft
Habitat        :wild Evergreen forest
Habit           :climber/shrub on a rocky waterfall
Height         :2 to 4 ft
Leaves         :?deeply cordate/ Peltate
Flowers       :pink
Fruits           :not seen
I am seeing two different palnts in first photograph. One is some Begonia sp. and second one looks like Rhynchoglossum sp...
I am sorry. I meant the plant adjacent to the waterfall. Shall send the second one separately.
... is correct. There are two plants: One is Begonia fallax and the other one is Rhynchoglossum notonianum (Gesneriaceae)
Charmadi Ghat Karnataka
Date: 12 NOV 2016 ... Altitude: explored between: 873 - 976 m (2863 - 3201 ft) asl   
Begonia malabarica Lam. ... (family: Begoniaceae)
please id collected from andhra Pradesh : 7 posts by 4 authors. Attachments (1) - 874 kb.
Please check Begonia!

Welcome to efloraofindia.
But always mention place, date and habit (wild or cultivated) etc. along with the post.
And elevation.
It is Begonia malabarica
Mahe Begonia 2 : 3 posts by 2 authors. Attachments (1) - 3 mb.
Request for id of Begonia from Mahe. Photographed in October 2019.
This could fit under B. malabarica, but it is hard to tell from the photo. This name currently covers several species- from Mark Hughes in another thread.

Begonia from Mahe Id please : 10 posts by 2 authors. Attachments (1) - 3 mb.
Submitting a request for id of Begonia photographed from Mahe in November 2019.
This could fit under B. malabarica, but it is hard to tell from the photo. This name currently covers several species- from Mark Hughes in another thread. 

Yes, it is cultivated. Thanks a lot
I am attaching another photo of the habit of the plant which may help in confirming the identification.
Attachments (1)