Here's a list of the species in genuses that I intend to try and "complete" at least so far as North America goes. Completed species will be re-added. Monotypic genuses don't count.
Anaxyrus
Pseudacris
Acris ✔
Pseudotriton ✔
Scaphiopus
Nerodia
Carphophis
Farancia
Sistrurus
Graptemys
Pseudemys
Sialis ✔
Passerina
Ammospiza ✔
Melospiza ✔
Calcarius
Centronyx
Sayornis
Spizella
Zonotrichia
Ladonia
Sarracenia
Liatris
Boltonia
Only USA species counted:
Lampropeltis
Crotalus
Storeria
Ischnura
Libellula
Ctenucha
Desmodium
Asclepias
Lespedeza
Monarda
Quercus
Drosera
Utricularia
Eupatorium
Rudbeckia
Heteranthera
Carya
Trillium