Paullinia fruticosa. A Fruiting branch B Detail of stems with stipules and axillary inflorescence C Posterior petal, dorsal view D Detail of inflorescence E Pistillate flower, lateral view F Outer sepal, frontal view G Posterior sepal, frontal view H Posterior petal with appendage, frontal view I Pistillate flower with removed perianth showing nectary lobes and staminodes, posterior view J Pistillate flower with removed perianth and some staminodes, showing nectary lobes and ovary, posterior view K Fruit L Seed, ventral view. A from Foster et al 11693 (US) B, D–L from Killip & Smith 27876 (US) C from Klug 4200 (US).