The Collaborative International Dictionary of English v.0.48:
Carpospore \Car"po*spore\, n. [Gr. karpo`s + -spore.] (Bot.) A kind of spore formed in the conceptacles of red alg[ae]. -- Car`po*spor"ic, a. [1913 Webster] carposporicWordNet (r) 3.0 (2006):
carpospore n 1: a nonmotile spore of red algae