Scanning electron microscopic investigation of seed surfaces in tribe
Hydrophylleae (Hydrophyllaceae) and seed development in Nemophila indi
cates the presence of four closely related genera (Ellisia, Hydrophyll
um, Nemophila, Pholistoma) and one aberrant genus (Eucrypta), which sh
ould probably be transferred elsewhere. Comparative evidence from embr
yology, morphology, cytology, and palynology is roughly corroborative.