"Caenispirillum humi" Huq 2018 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Alphaproteobacteria order Rhodospirillales family Novispirillaceae genus Caenispirillum species Caenispirillum humi Name Homonyms Caenispirillum humi "Caenispirillum humi" Huq 2018