568 



BOTANY. 



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

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

 Oamopetal(f. 



Chwipetake. 



Apetalfp. 

 Monocotyledones. I 



Dicoty 



GYMNOSPERM^E. 



PHANERO- 

 GAMIA. 



PTERIDOPHYTA. 



BRYOPHYTA. 



CARPOSPORE^I. 



OOSPORE.E. 



ZYGOSPORE^L 



PROTOPHYTA. 



808. The Distribution of Plants in Time. If we bring 

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

 ontology), as has been done by Schimper,* we find that the 



* " Traite de Paleontologie Vejjetale," 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 Pliytopi'ieontology. 



