POPULAR FLORA. 



203 



CLASS II. — ENDOaENS OR MONOCOTYLEDONS. 



Stem having the wood in threads or bundles, interspersed among the pith or 

 cellular part, not forming a ring or layer, and not increasing by annual layers. 



Leaves parallel-veined, not branching and forming meshes of network. To this 

 some Arums, Trillium, Greenbrier, &c. are exceptions, having more or less netted 

 veins. 



6S0 



SOS 



500. Endogenous stem of one year old, shown in ft Com-stalk. Sll. One of several years old. of Palmetto. 

 Parallel-veined leaves of the two kinds: 502. that of Lily of the Valley ; 503. one ofCalla 504. Ma;niried 

 section of the seed of Iris, showiu* the small monocotyledonous embryo. 605. Plantlet of Iris growing from 

 the seed. 



Flowers with their parts mostly three or six, never five. 



Embryo monocotyledonous, i. e. of only one true seed-leaf: so in 

 germination the leaves are all alternate or one above another. 



Except the Palmetto and one or two Yuccas at the South (Fig. 

 79), and some Greenbriers, all the Endogens of this country are herbs. ^"^ 



In warmer climates there are many Palms and other woody plants of the class, all 

 having an appearance very different from our common trees and shrubs (113, 114). 



14 



