Sindoropsis
Seed, cotyledon, embryo, and testa: S. letestui (F. Pellegrin) J.J.G. Léonard - top left cotyledon notched and concealing radicle (L) and embryonic axis (R), bottom far left seed topography, bottom left center seeds, testa SEMs.
Smithia
Fruit and seed: S. elliotti E.G. Baker var. elliotti - center young fruit (modified from Gillett et al., 1971); S. spp. - left fruits and fruits within calyx and bracts and right seeds.
Soemmeringia
Fruit and seed: S. semperflorens C.F.P. von Martius - left partial fruit, bottom fruit and fruits in marcesent corolla, and top right seeds.