Polyangium minor (Peterson 1959) McCurdy 1970 (Approved Lists 1980) Haploangium minor Reichenbach 2005 Peterson J.E. A monocystic genus of the Myxobacterales (Schizomycetes) 1959 51 1 1 8 Mycologia 0027-5514 1557-2536 10.2307/3755929 Reichenbach H. Garrity G.M. Brenner D.J. Krieg N.R. Staley J.T. Genus IV. Haploangium (ex Peterson 1959) gen. nov., nom. rev. 2005 2, Part C 2 1129 1130 Bergey's Manual of Systematic Bacteriology Springer New York 0387241450 10.1007/0-387-29298-5_277 From J.E. Peterson, University of Missouri Herbarium: Haploangium minor (Accession Number 41, on bark of Ulmus rubra growing in Wagner's Woods, Holstein, Missouri, Moist-chamber Culture No. 283-9). Note that the Approved List incorrectly list UMH Peterson 44.