Begonia capensis (Cultivated) ?

Begonia capensis L.f., Suppl. Pl. 502 1782. (syn: Begonia diptera Dryand.; Begonia humilis Ker Gawl.; Begonia tuberosa Lam. [Illegitimate]; Diploclinium tuberosum Miq. [Illegitimate]) ?; Brazil as per WCSP Flower ID Request (25-5-2011) : 5 posts by 3 authors. Attachments (1) I clicked this pic in Gangtok, Sikkim. Please let me know what flower it could be. I was wondering if it is Begonia tuberosa... no. its most likely not... how can it be a begonia?????/ with this flower structure.... please follow the routine way of photographing your specimen.... watch others who do well... you can pick up tips and ideas.... and follow the format for submitting requests that ... has written up ...go to group page and get it please.... Please check for yellow variety of Begonia capensis L.f. (Wrongly identified as Yellow variety of B. tuberosa - An illegitimate name). References: The Plant List Ver.1.1  WCSP  IPNI  Catalogue of Life