Fruit images look different from the originally posted images. So posting for id pl.
For identification, learning, discussion & documentation of Indian Flora, please visit/ join our Efloraofindia Google e-group (largest in the world- more than 2975 members & 3,00,000 messages on 25.7.18) or Efloraofindia website (with a species database of more than 12,000 species & 3,00,000 images of which 1,00,000 are directly displayed).
The whole world uses my Image Resource of more than a thousand species & eight thousand images of Birds, Butterflies, Plants etc. (arranged alphabetically & place-wise). You can also use them for free as per Creative Commons license attached with each image.
Also author of 'A Photoguide to the Birds of Kolkata & Common Birds of India'.
Sir,In the second paragraph please read it as "though I am doubtful about.." instead of "though I am not doubtful about.."It was an error while typing.Thank you
Sir,The correct citation is G. oppositifolia Roxb. ex DC. and it is in my recent paper on Roxburgh's Grewia which will appear in the next issue of Journal (I will notify you when it will publish).Regarding the synonym, all appears to be fine, though I am not doubtful about Grewia orientalis Roxb. ex Wight & Arn.
The G. orientalis Roxb. is nothing but the G. orientalis L., and it is not referable to G. oppositifolia Roxb. ex DC.Wight & Arn. in their Prodr. Fl. Ind. Orient. (1837) referred Roxburgh's Icon 222 for their G. emarginata, which was a drawing Roxburgh himself considered for his Flora Indica (1832) as G. orientalis and also mentioned Rheede's Hort. Malabaricus (1865-1868) drawing (Tab. 46. attached below).Further, Wight & Arn. (1837) also considered G. orientalis Roxb. Fl. Ind. 2. p. 586 as a synonym for G. orientalis L.The specimen was sent by Roxburgh to Smith as "G. microcos" initially, which is the type of Roxburgh's G. orientalis available now at LINN.So G. orientalis Roxb. ex Wight & Arn = G. orientalis L.Also attaching the icons of G. orientalis and G. oppositifolia by Roxburgh here for clarification.I hope the little information I provided is helpful.Thank you