adjective. Producing two types of spores differing in size and sex.

Having more than one kind of asexually produced spores: applied to the vascular cryptogams, which have macrospores or megaspores (female spores) homologous with the embryo-sac of phanerogams, and microspores (male spores) homologous with the pollen-grains of phanerogams.

adjective. Producing both male and female gametophytes.

adjective. characterized by heterospory

"The development of the microsporangia and the contained spores (pollen-grains) is closely comparable with that of the microsporangia in Gymnosperms or heterosporous ferns."

prosperous