Chapmannia
Seed, cotyledon, and embryo: C. floridana J. Torrey & A. Gray - upper-left group of 4 seeds, right group with embryo and cotyledons; C. prismatica (M. Sessé y Lacastra & J.M. Mociño) M. Thulin - lower-left group of 3 seeds.
Chapmannia
Cotyledon, embryo, and testa: C. floridana J. Torrey & A. Gray - right group of testa SEMs; C. prismatica (M. Sessé y Lacastra & J.M. Mociño) M. Thulin - left group with embryo and cotyledons.
Chidlowia
Seed, cotyledon, embryo, and testa: C. sanguinea A.C. Hoyle - top left cotyledon notched and split and concealing margins of radicle (L) and embryonic axis (R), bottom far left seed topography, bottom left center seeds, testa SEMs.
Chloroleucon
Fruit and seed: C. foliolosum (G. Bentham) G.P. Lewis - bottom left fruit; C. mangense (N.J. von Jacquin) Britton & J.N. Rose - top left fruit cluster; C. spp. - top right fruits, bottom right seeds.