"Polyangium violaceum" Kuhlwein and Gallwitz 1958 Dataset NCBI Taxonomy Classification phylum Myxococcota class Myxococcia order Myxococcales family Archangiaceae genus Archangium species Archangium violaceum Name Homonyms Polyangium violaceum "Polyangium violaceum" Kuhlwein and Gallwitz 1958