ibclogo XVI International Botanical Congess


Abstract Number: 5360
Poster No. = 947


GAMETOPHYTE STATE IN REPRODUCTIVE CYCLE OF LATE DEVONIAN ARCHAEOPTERIDS AND THEIR TAXONOMIC STATUS


N. S. Snigirevskaya, Komarov Botanical Institute, St. Petersburg, Russia


Heterospory, sporoderm and gametophytes development in Archaeopteris archetypus are discussed in connection with taxonomic status of archaeopterids out of relationship with aneurophytes. Divisio Archaeopteriphyta is presented. Picnoxylic organization of the both is considered as a result of a convergence based on their origin from the same ancestry group unknown in fossil state.


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