568 



BOTANY. 



the genetic relations) of the seven great divisions of plants, 

 so far as they can be shown upon a plane surface : 



Monoeotyledones. 



Apetalm. 



CJioripetalm. 



Dicotyledoiles. 



(JymnosPerm^. 



AkBiosperm^. 



.PHANERO- 

 '^ GAMIA. 



PTERIDOPHTTA. 



BBYOPHYTA. 



CARPOSPORE^. 



OOSPORES. 



ZYGOSPORES 



PROTOPHYTA. 



608.— The Distribution of Plants in Time. If we bring 

 together what is yet known as to Fossil Botany (Phytopalse- 

 ontology), as hasbeen doneby Schimper,* we find that the 



* " Traits de Paleontologie Vegetale," par W. Ph. Schimper. Paris 

 1869 to 1874. This work of three large octavo volumes (aggregating 

 2696 pp.) and a quarto atlas of 110 plates is a most valuable one for 

 the student of PhytopalsBontology, 



