The botanical legacy of Martinus Houttuyn (1720 - 1798) in Geneva Author Wijnands, Dirk Onno Author Heniger, Johannes Author Veldkamp, Jan Frederik Author Fumeaux, Nicolas Author Callmander, Martin W. text Candollea 2017 2017-05-12 72 1 155 198 journal article 20627 10.15553/c2017v721a11 ae864518-b1d7-49da-85dc-905b1a4e6809 2235-3658 5721887 32. Convolvulus batatas L. , Sp. Pl.: 154. 1753 [cited in Nat. Hist. II(7): 541. 1777]. Ipomoea batatas (L.) Lam ., Tabl. Encycl. 1: 465. 1793. Notes . – A specimen from the Japan herbarium is in G-PREL [G00818039]. It belongs to Stephania japonica (Thunb.) Miers. Two specimens are present in the Thunberg herbarium; one of them, collected by Thunberg from the Cape (UPS-THUNB n° 4422), is annotated as Convolvulus batatas .