macrospore

from WordNet (r) 3.0 (2006)

macrospore
    n 1: larger of the two types of spore produced in heterosporous
         plants; develops in ovule into a female gametophyte [syn:
         {megaspore}, {macrospore}]

from The Collaborative International Dictionary of English v.0.48

Macrospore \Mac"ro*spore\, n. [Macro- + spore.] (Bot.)
   One of the specially large spores of certain flowerless
   plants, as {Selaginella}, etc.
   [1913 Webster]

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