SCALE-LEAVES, FOLIAGE-LEAVES, FLORAL-LEAVES. 



631 



either in the apices of the lobes or serrated teeth of the margin, as in hazels, oaks, 

 chestnuts, hornbeams, and hop-hornbeams (see fig. 149 0, or in the indentations 



Fig. 149.— ArraDgement of Strands in the blades of Foliage-leaves. Forms with one main strand. 



1 Heticulate (Pyrus communis). 2 Looped (Rhamnus Wul/enit). • Arched {Cornus mas). * Arched ; the two lowest lateral 

 strands much stronger than the others (Laurits Camphora). * Reticulate-pinnate {Populus pyramidalis). ^ Undivided 

 strands, ending in the incisions of the crenate leaf margin {Rhinanthus). ^ Undivided strands, terminating in the 

 projecting teeth of the margin (Ostrya). s Reticulate {Sydrocotyle asiatica). ^ Reticulate strands in the blade of a 

 peltate leaf {Hydrocotyle vulgaris), ^o Looped (Myosotis palustris). n Arched (Phyllagathis rotundifolia). la Rad;ate 

 and undivided {Acer platan&ides). i' Looped {Eugenia). 



of the margin, as in Bartsia, Eyebright, and Yellow-rattle (Bartsia, Euphras%a. 

 and Rhinanthus), and, generally speaking, in all Rhinanthaeese (see fig. 149^). 



