RT Journal Article SR Electronic(1) A1 HIGGENS, C. E. A1 KASTNER, R. E.YR 1971 T1 Streptomyces clavuligerus sp. nov., a β-Lactam Antibiotic Producer JF International Journal of Systematic and Evolutionary Microbiology, VO 21 IS 4 SP 326 OP 331 DO https://doi.org/10.1099/00207713-21-4-326 PB Microbiology Society, SN 1466-5034, AB A new species of Streptomyces which produces two new cephalosporin antibiotics is named and described. Sporophores are produced on an extensive aerial mycelium and consist of networks of short, sympodially branched hyphae. One to four spores are borne usually on short, club-shaped side branches. Sporophores eventually segment to form chains of spores. The spores are oblong to slightly cylindrical, smooth-walled, and gray to grayish green en masse. The species name proposed, Streptomyces clavuligerus, refers to the production of club-like side branches., UL https://www.microbiologyresearch.org/content/journal/ijsem/10.1099/00207713-21-4-326