López-lópez A, Barois I, Martínez-romero E, Martínez J, Rogel-hernández MA, Ormeño-orrillo E, Ortiz ceballos AI
(2012).
Rhizobium grahamii sp. nov., from nodules of Dalea leporina, Leucaena leucocephala and Clitoria ternatea, and Rhizobium mesoamericanum sp. nov., from nodules of Phaseolus vulgaris, siratro, cowpea and Mimosa pudica