Man pages matching name bio::tree::distancefactory in section 3pm:

Bio::Tree::DistanceFactory.3pm.en	debian 10 / libbio-perl-perl
Bio::Tree::DistanceFactory.3pm.en	debian 11 / libbio-perl-perl
Bio::Tree::DistanceFactory.3pm.en	debian 12 / libbio-perl-perl