Definitions for: Microspore

[n] smaller of the two types of spore produced in heterosporous plants; develops in the pollen sac into a male gametophyte

Webster (1913) Definition: Mi"cro*spore, n. [Micro- + spore.] (Bot.)
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.

See Also: spore

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