Prosopidastrum
Seed, cotyledon, embryo, and testa:
P. globosum (Gillies) A.E. Burkart - bottom far left cotyledons concealing all but radicle tip (L) and embryonic axis (R);
P. mexicanum (Dressler) A.E. Burkart - top left center seed topography, top far left cotyledons concealing all but radicle tip (L) and embryonic axis (R), testa SEMs;
P. spp. - bottom left center seeds.