Fig. 1

Seed size variation in Plukenetia and Romanoa. A. Plukenetia polyadenia (van der Werff 16,350, MO); B–C. P. huayllabambana (Gruhn 84, MO); D–E. P. volubilis (Nee 35,694, MO); F–G. P. stipellata (Zambraver 1047, MO); H. P. lehmanniana (Daniel 4943, US); I–J. P. africana (Bartsch 1859, MO); K–L. P. supraglandulosa (Granville 10,783, US); M–N. P. loretensis (Krukoff 1031, MO); O–P. P. verrucosa (Barrabé & Crozier 145, US); Q–R. Romanoa tamnoides (Zardini & Cardozo 44,939, MO). Dual orientations (face and side) for most species to show flattened lenticular shape. Source: Vouchers in parentheses. Single photograph taken with a Nikon D800