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PLANT MORPHOLOGY 



Fig. 259. Portion of restoration of Carboniferous swamp forest in the Chicago Natural 

 History Museum. Plants belonging to the Cycadofilicales include Lyginopteris oldhamia, 

 a climber leaning against the large tree near the center, Neuropteris decipiens, in left center, 

 and Neuropteris heterophylla, in lower left center. 



central portion, the nucellus, surrounded by an integument except at its 

 apex, where a narrow passageway, the micropyle, was formed. In the 

 CycadofiUcales the integument commonly was free from the nucellus only 

 in the upper portion of the ovule, but in some cases was wholly free. The 

 nucellus was prominently beaked and contained a deep pollen chamber in 



