This document appears to be a corrections/errata page from a microbiology journal rather than a complete research article. It contains two separate notices: First, a correction to a 1977 article by Vidaver and Mandel describing Corynebacterium nebraskense, an orange-pigmented phytopathogenic bacterium, correcting the table title and data entry in a comparative characteristics table. Second, a correction to an article by Holdeman and Moore describing a new genus Coprococcus and twelve new bacterial species isolated from human feces, along with emended descriptions of four previously described species. The correction addresses a transcription error regarding hydrogen gas production in the anaerobic bacteria characterization. These corrections indicate the importance of accurate reporting in taxonomic descriptions and bacterial characterization studies published in microbiology journals during this period.

Key findings

• Corynebacterium nebraskense is a phytopathogenic bacterium with orange pigmentation
• A new bacterial genus Coprococcus was identified and described from human fecal samples
• Twelve new anaerobic bacterial species from human feces were characterized
• Hydrogen gas production is a key metabolic characteristic for identifying anaerobic bacteria from human gut flora
• Accurate microbial taxonomy requires careful documentation of comparative characteristics and metabolic properties