Vitis aestivalis -... species.wikimedia.org

Maine Natural Areas Program... www.maine.gov

World Plants: Plant List www.worldplants.de

Category:Vitis - Wikimedia... commons.wikimedia.org

World Plants: Plant List www.worldplants.de

Vitis vinifera L. - Wine... luirig.altervista.org

World Plants: Plant List www.worldplants.de

Vitis vinifera L. ssp.... luirig.altervista.org

Vitis vinifera L. - Wine... luirig.altervista.org

Vitis vinifera L. ssp.... luirig.altervista.org

CCH2 Portal - Vitis www.cch2.org

Vitis vinifera L. - Wine... luirig.altervista.org

Vitis vinifera L. - Wine... luirig.altervista.org

World Plants: Plant List www.worldplants.de

Vitis vinifera L. ssp.... luirig.altervista.org

Vitis vinifera L. - Wine... luirig.altervista.org

World Plants: Plant List www.worldplants.de

Vitis aestivalis Michx. |... powo.science.kew.org

USDA Plants Database plants.usda.gov

Vitis berlandieri Planch. -... luirig.altervista.org