[ het-uh-ros-puh-ree ]
/ ˌhɛt əˈrɒs pə ri /
the production of both microspores and megaspores.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for heterospory
Part II, on Lepidostrobus and some allied cones, is remarkable for the demonstration of heterospory in several species.