Vitis

1a Leaves oval to suborbicular, shallowly to deeply 3- or 5-lobed, base deeply cordate, margin deeply and irregularly toothed. Fruits 15–25 mm in diameter … V. vinifera
b Leaves ovate to shallowly 3-lobed, base shallowly cordate to truncate, margin serrate to serrulate. Fruits up to 10 mm in diameter ……2.
2a Stems glabrous. Lower surface of leaf glabrous with some tufts of arachnoid hairs. Inflorescence 2–7 cm …. 1. V. flexuosa
b Stems hairy. Lower surface of leaf densely hairy. Inflorescence at least 7 cm long ……3.
3a Petioles, inflorescence peduncles and lower side of the leaves densely hairy with ferruginous arachnoid hairs. Stems densely hairy with ferruginous arachnoid hairs becoming floccose to glabrate. Pedicels up to 2.5 mm before the calyptra is shed …..2. V. heyneana
b Petioles, inflorescence peduncles and lower side of the leaves densely hairy with appressed villous hairs, and scattered arachnoid hairs. Stems densely villous and with scattered arachnoid hairs, but neither floccose nor glabrate. Pedicel more than (2.5–)3 mm before the calyptra is shed …..3. V. pedicellata

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Keys in Flora of Bhutan Vol. 2(1) 1991 by A. J. C. GRIERSON & D. G. LONG:
1. Leaves broadly ovate, unlobed or with 2 shallow lateral lobes; margins shallowly serrate; berry 6 – 8mm; native … 1.V. heyneana
+ Leaves suborbicular, shallowly to deeply 3 or 5-lobed; margins coarsely and irregularly dentate; berry 15 — 25mm; cultivated … 2. V. vinifera
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Vitis labrusca L. (Cultivated) (USA (Alabama, Connecticut, District of Columbia, Delaware, Georgia, Illinois, Indiana, Kentucky, Louisiana, Massachusetts, Maryland, Maine, Michigan, Mississippi, North Carolina, New Hampshire, New Jersey, New York, Ohio, Pennsylvania, Rhode Island, South Carolina, Tennessee, Utah, Virginia, Vermont, Wisconsin, West Virginia), Canada (New Brunswick, Nova Scotia, Ontario), Europe (I), India (c), Vietnam (I), Madeira (I), Georgia [Caucasus] (I), Tajikistan (I), Uzbekistan (I) as per Catalogue of Life)
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Vitis vinifera L. (Introduced) (Native to: Albania, Austria, Bulgaria, Corse, Cyprus, Czechoslovakia, France, Germany, Greece, Hungary, Iran, Iraq, Italy, Kirgizstan, Krym, Lebanon-Syria, Palestine, Romania, Sardegna, Sicilia, Switzerland, Tadzhikistan, Transcaucasus, Turkey, Turkey-in-Europe, Turkmenistan, Ukraine, Uzbekistan, Yugoslavia; Introduced into: Afghanistan, Algeria, Angola, Argentina Northeast, Azores, Baleares, Bangladesh, Belgium, British Columbia, California, Canary Is., Cape Verde, Chad, China North-Central, China South-Central, China Southeast, East Aegean Is., East Himalaya, Easter Is., Ecuador, Eritrea, Ethiopia, Gulf of Guinea Is., Idaho, India, Kazakhstan, Korea, Kriti, Laos, Libya, Madeira, Massachusetts, Morocco, New Hampshire, New York, New Zealand North, Oregon, Pakistan, Pennsylvania, Peru, Poland, Portugal, South European Russi, Spain, Tibet, Trinidad-Tobago, Tunisia, Vietnam, Washington as per POWO)

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BSI Flora of India with keys and details (Distribution):
Vitis flexuosa Thunb. (India: Kashmir, Himachal Pradesh, Uttar Pradesh, West Bengal, Assam and Manipur; Pakistan, Nepal and China)
Vitis heyneana Roemer & Schultes (India : Himachal Pradesh, West Bengal, Sikkim, Assam, Meghalaya and Andhra Pradesh; Nepal, Bhutan, W. China and Myanmar)
Vitis jacquemontii R. Parker (India : Himachal Pradesh and Uttar Pradesh; Pakistan and Nepal)

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From Floral Database of Tamilnadu :

Binomial Habit Notes Ref. Distrib.
Vitis
vinifera L.		 Shrub Western Ghats
& Eastern Ghats, Cultivated, Native of South Europe		 Flora of Tamil
Nadu, VOL. I, 1983		 Coimbatore,
Dharmapuri, Dindigul, Salem

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FRLHT Indian Medicinal Plants Nomenclature Database with images/ herbarium, distribution, local names etc. :

Vitis carnosa (ROXB.) WALL. (? Vitis carnosa (Lam.) Wall. is a synonym of Cayratia trifolia (L.) Domin)
 
 
 
 
 
 
 
 
 
 
Vitis vitiginea HAINES. (? Vitis vitiginea (L.) W.Theob. is a synonym of Cissus vitiginea L.)

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Forest Plants of Eastern India By Amal Bhusan Chaudhuri (1993)- Details-

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Gardening in India By George Marshall Woodrow, G Marshall (1999)- Details-
Vitis albonitens (Linden & André) G. Nicholson is a synonym* of Cissus verticillata (L.) Nicolson & C.E.Jarvis
Vitis amazonica (Linden) G. Nicholson
Vitis discolor (Blume) Dalzell is a synonym of Cissus javana DC.
Vitis quadrangularis (L.) Wall. ex Wight is a synonym of Cissus quadrangularis L.
Vitis woodrowii Stapf is a synonym of Cissus woodrowii (Stapf ex Cooke) Santapau

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Vitis carnosa (ROXB.) WALL. (? Vitis carnosa (Lam.) Wall. is a synonym of Cayratia trifolia (L.) Domin)
Vitis discolor (Blume) Dalzell is a synonym of Cissus javana DC.
Vitis himalayana (Royle) Brandis is a synonym of Parthenocissus semicordata (Wall.) Planch.
Vitis quadrangularis (L.) Wall. ex Wight is a synonym of Cissus quadrangularis L.
Vitis tomentosa Roth in Schult. is a synonym of Ampelocissus tomentosa (B.Heyne & Roth) Planch.

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Biodiversity in India, Volume 4 edited by T. Pullaiah (2006)- Details-
Vitis vinifera

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Pl. go through‎ Vitis ‎‎(Vitaceae‎) page with comparative images of species in efloraofindia. On clicking the link of species, one can check the complete details. Genus pages generally give details of most of the species found in India.
I request you to pl. go through & point out mistakes, if any. I hope this will aid in identifications in future. If anybody can send images of other species of this genus (for incorporation in the website), if any, or can identify unidentified images, it will be really nice.