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ANATOMY, AND LIFE-lIESTORr OF THE CONTFGliJB. 



233 





above the cotyledons is 3 -sided, bearing tristichous leaves of an 

 oblong form, gradually passing into the wedge-shaped form which 

 characterizes the adult plant. 

















I 



















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, 





A 





. 





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> 











1 





.— Seedli 





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The 



mode of germination in different species of Araucaria 

 so much that authors have founded subdivisions of the 



genus upon these 



American 













. 







oeiongmg to the section Columbea there are but two cotyledons, 

 and these hypogeal, as in A. Bidvoillii and A. imbricata. In 



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