heterosporösa
Heterosporösa (heterospory) denotes the condition in which a plant produces two distinct sizes and types of spores: smaller microspores that develop into male gametophytes and larger megaspores that develop into female gametophytes. This reproductive strategy contrasts with homospory, where only one kind of spore is produced and gametophytes are typically bisexual.
Heterospory occurs in several plant lineages, including some lycophytes (for example Selaginella and Isoetes), a limited
Ecologically and evolutionarily, heterospory is significant because it enables partitioning of resources between male and female