Photo: Ipomoea batatas.

Plant, dark and groundhugging. Turku bot.g., Ruissalo, Finland. Planted. 2004-08-26.
Ipomoea batatas (L.) Lam. Engl.: sweet potato, sweetpotato, yam. Deu.: Batate, Süsskartoffel. Suom.: bataatti. Sven.: batat, sötpotatis. Bot. syn.: Batatas edulis Choisy, Convolvulus batatas L., Convolvulus tiliaceus auct. non Willd., Ipomoea edulis Niederl., Ipomoea fastigiata (Roxb.) Sweet, Ipomoea tiliacea auct. non (Willd.) Choisy, Ipomoea triloba auct. non L.
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Photo: Ipomoea batatas.