(?), n. [Gr. w,'o`n an egg + fyto`n a plant.] (Bot.) Any plant of a proposed class or grand division (collectively termed ophytes or Ophyta), which have their sexual reproduction accomplished by motile antherozoids acting on ospheres, either while included in their ogonia or after exclusion.
[1913 Webster]

This class was at first called Ospore, and is made to include all alg and fungi which have this kind of reproduction, however they may differ in all other respects, the contrasted classes of Thallophytes being Protophytes, Zygophytes, and Carpophytes. The whole system has its earnest advocates, but is rejected by many botanists. See Carpophyte.
[1913 Webster]


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