Begonia hatacoa Buch.-Ham. ex D.Don, Prodr. Fl. Nepal. 223 1825. (syn: Begonia hatacoa var. rubrifolia Golding & Rekha Morris, without type.; Begonia hatacoa var. viridifolia Golding & Rekha Morris, without type.; Begonia rubrovenia Hook.; Platycentrum rubrovenium (Hook.) Klotzsch);
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Assam; Bangladesh; East Himalaya; Myanmar; Nepal; Thailand; Vietnam as per Catalogue of Life;
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Rhizomatous. Stems 10-30cm. Leaves ovate-lanceolate, 7-15×3-7cm, acuminate, base ± obliquely rounded, scarcely cordate, margin subentire or ± distantly dentate, pubescent on veins beneath; petioles 3-12cm; stipules ovate, up to 20x10mm, acuminate, persistent. Peduncles c 10cm, bearing a few flowers terminally; bracts similar to stipules. Outer perianth segments ovate, c 10x7mm, inner ones c 6x4mm, pink or white, streaked pink. Stamens numerous; connective produced. Capsule c 12x6mm, becoming reflexed, largest wing oblong, c 15x10mm.

Fl. May-October.
Wet, rocky river banks and shaded forests
(attributions- A.J.C. Grierson & D.G. Long. Flora of Bhutan. Published by RBGE. 1991 from Bhutan Biodiversity Portal)
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MS Jan.,2018/05 Begonia sp. for ID : 9 posts by 3 authors. Attachments (2)
Location : Tamdil, Mizoram
Date : 16-07-2016
Habit : Herb
Habitat : Wild

Begonia hatacoa ?


Yes looks like this..
The underside of leaves in this case was purple..


Pl. also check with the link of Monograph of NE Indian species, the link of which I sent you


Yes, I will also go with … for Begonia hatacoa as per the following:


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Fwd: Begonia for identification from Arunachal : 4 posts by 2 authors. Attachments (3)
Please find attached herewith some images of Begonia hatacoa, recorded from Arunachal Pradesh, for addition to our database.

Thanks, …, for wonderful addition along with those of …


B. hatacoa for sure



Images by Saroj Kumar Kasaju, (For more photos & complete details, click on the links)

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Begoniaceae : Begonia megaptera A. DC. : 3 posts by 3 authors. Attachments (5).

Date: 23 Jul, 2014
Location: Dolakha Nepal
Altitude : 5000 ft.
For validation.

From whatever little I know, it does look like Begonia megaptera. We have Begonia picta and Begonia dioica growing commonly here in Dharamshala at this height, but I haven’t yet seen any megaptera.


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Location: Balaju, Raniban, Kathmandu, Nepal
Altitude: 4400 ft.
Date: 31 August 2013
Attachments (4)  


… has confirmed both entries as Begonia hatacoa Buch.-Ham. ex D.Don.
As such, need to be amended in the main efi page.

Thanks, … Finally our Himalayan Begonias are identified properly.



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Begonia hatacoa Buch.-Ham. ex D.Don. : 3 posts by 2 authors. Attachments (7)
Location: Gyaneswor, Kathmandu
Date: 19 June 2019
Elevation: 1300 m.



MS,Oct.,2021/19 Begonia sp. for id.: 1 image.
Place : Ailawng

Date : 16-07-2018
Habit : Herb
Habitat : Wild


Begonia hatacoa Buch.-Ham. ex D. Don !


Thanks, …, for id as Begonia hatacoa


Agreed!


 


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References:
Catalogue of Life  The Plant List Ver.1.1  WCSP  Flora of China  Annotated checklist of Flowering plants of Nepal  Flowers of India  Wikispecies  Encyclopedia of Life (Specimen)  Bhutan Biodiversity Portal  Botany Photo of the Day

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