R

uminococcus albus. Three guesses as to where Ruminococcus can be frequently isolated. According to the MicrobeWiki (a neat little site hosted by Kenyon College), Ruminococcus can be isolated from ... yep, you guessed it ... the rumen of cattle, sheep, and goats. R. albus is a gram positive organisms, belonging to the phylum Firmicutes. It is anaerobic, does not produce spores, and is non-motile. They produce a number of cellulose degrading proteins, which is useful for the organisms they inhabit, as it allows them to obtain energy from cellulose which they cannot otherwise digest.