POPULAE FLOP A. 



SERIES I. 



FLOWERING OE PHiENOGAMOUS PLANTS. 



Plants which produce real Flowers (or Stamens and Pistils) and Seeds. — 

 See Part I. Paragr. 164, 16G. 



CLASS L — EXOGEXS OR DICOTYLEDOXS. 



Stem composed of pith in the centre, a separate bark on the surface, and the 

 wood between the two, of as many rings or 

 layers as the stem is years old. 

 Leaves netted-veined, that is, with some of 



the veins or 

 veinlets run- 



niuGj together 





so as to form 

 meshes of 



!!|i. 



230 



Exojensus stem of the first year. 



net-work or reticulations. 



Flowers with their parts most commonly in fives 

 or fours, very seldom in threes. 



Embryo dicotyledonous, i. e. of a pair of seed- 



233 S34 233 236 



2?2. Netted-veined leaves of Maple. Embryos of, 233. Sujar-Map'ie ; 234,235. Morning-Glory; 236. Cherry, 



leaves, or in the Pines and the like often polycotyledonous, that is, of more than 

 one pair. — The class may be told by the stems and leaves without examining the 



