POPULAR FLORA. 
SERIES I . 
FLOWERING OR PH^ENOGAMOUS PLANTS. 
Plants which produce real Flowers (or Stamens and. Pistils) and Seeds. — 
See Part I. Paragr. 164, 166. 
CLASS I. — EXOGENS OR DICOTYLEDONS. 
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- 
ning together 
so as to form 
meshes of 
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- 
230 -.31 
Exogenous stem of the first year. 
232. Netted-veined leaves of Maple. Embryos of, 233. Sugar-Mapie ; 
234 23 5 236 
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 
