Microspore

Definition:

• (n.) One of the exceedingly minute spores found in certain flowerless plants, as Selaginella and Isoetes, which bear two kinds of spores, one very much smaller than the other. Cf. Macrospore.

Compare microspore with other words:

megaspore vs. microspore

microspore vs. spore

microsporangium vs. microspore

microspore vs. pollen