The current taxonomy of rhizobia
This page lists all of the current validly-published binomial names for the rhizobia, [not up to date]

Bacteria confused with rhizobia, including Agrobacterium taxonomy
This page lists bacteria that could be confused with 'true' rhizobia, such as non-nodulating Rhizobium species, and invalid names. Read moreabout 

Species that I have helped describe
This page this the species that I have helped describe, where my name is part of the authority. There are links to the name in the nzfungi database, and links to the type specimen.