Thompson JP, Skerman VBD. Azotobacteraceae: the taxonomy and ecology of the aerobic nitrogen-fixing bacteria. Academic Press, London, 1979.
Anonymous. Validation list no. 6. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1981; 31:215-218.
The type species of this genus has alternatively been placed in the genus Azotobacter Beijerinck 1901 (Approved Lists 1980).Publication:
Döbereiner J. Azotobacter paspali, sp. n. una bacteria fixadora de nitragenio na rizosfera de Paspalum. Pesquisas Agropecuar Brasil 1966; 1:357-365.
Number of child taxa with a validly published and correct name: 1 Number of child taxa with a validly published name, including synonyms: 1 Total number of child taxa: 1