Other numbers: CIP 53.139, NCDO 1155, NRRL NRS-1284, H. Proom CN 3622. History: < H. Proom (Bacillus pulvifaciens) < H. Katznelson. Isolated from: Powdery scale. Additional information: Identification (7115). Nomenclature (6866). Cultivation conditions: Medium 91 or 2, 30°C.