most conifers: in some systems classified as a class (Pinopsida) and in others as a subdivision (Pinophytina)
sub
used in former classifications to include all ferns and flowering plants and divided into the three classes Filicinae and Gymnospermae and Angiospermae
sub
yews: in some systems classified as a class (Taxopsida) and in others as a subdivision (Taxophytina) used in some classifications for one of five subdivisions of Gymnospermophyta
sub
division of fungi having sexually produced zygospores
sub
division of fungi having sexually produced zygospores