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Table 1 Overview of Penicillium chrysogenum and P. rubens strains studied.

From: Fleming’s penicillin producing strain is not Penicillium chrysogenum but P. rubens

No. Other collection no. Name Substrate, locality Remarks
NRRL 820 DTO 100G5 = IBT 4395 = IBT 6067 = IMI 92220 P. chrysogenum Unrecorded source Ex-lectotype of P. griseoroseum
CBS 306.48T NRRL 807 = IBT 5233 = IMI 24314 P. chrysogenum Cheese, Storrs, Connecticut, USA Ex-lectotype of P. chrysogenum
DTO 8712   P. chrysogenum Fungal growth on ceiling of archive, Utrecht, the Netherlands  
DTO 102B4 IBT 26889 = C238 P. chrysogenum House dust, Wallaceburg, ON, Canada Representative of group 2 in the study of Scott et al. (2004)
CBS 355.48 NRRL 821 = IBT 4344 = DTO 98D4 = IMI 39759 P. chrysogenum Branches of Hyssopus, Norway Ex-type of P. notatum
CBS 197.46 NRRL 832 P. rubens Must contaminant, Belgium The strain first used for producing penicillin in submerged culture (Raper & Thom 1949: 368–370)
CBS 205.57 NRRL 824 = IBT 30142 = IMI 015378 P. rubens Culture contaminant in bacterial culture, UK Fleming’s original penicillin producing strain
DTO 95E9 IBT 30661 P. rubens Cap of beer bottle, Belgium  
NRRL 792T DTO 98E8 = IBT 30129 P. rubens Unrecorded source Ex-lectotype of P. rubens
CBS 307.48 NRRL 1951 = IBT 5857 = IMI 40233 P. rubens Mouldy cantaloupe Peoria, Illinois, USA “Wisconsin strain”, parent of most high yielding penicillin producing strains
Wisconsin 54-1255   P. rubens Mouldy cantaloupe Peoria, Illinois, USA Full genome sequenced strain