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



681 



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'), or in the indentations 



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



1 Reticulate (Pyrus eommv7iis). 2 Looped {Rhammti Wid/enii). s Arched (Comus mas). * Arched; the two lowest lateral 

 strands much stronger than the others (Laiinis Camphora). s Reticulate-pinnate (Fopului pyramidalis), f Undivided 

 strands, ending in the incisions of the creuate leaf margin (Rhinantkus). ^ Undivided strands, terminating in the 

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

 peltate leaf {Hydrocotyle vulgaris). 10 Looped {Myosotis palustris). 11 Arclied (Phyllagathis rotundi/olia). 12 Radiate 

 and undivided {Acer ptatanoides). is Looped {Eugenia). 



of the margin, as in Bartsia, Eyebright, and Yellow-rattle (Bartsia, Euphrasia, 

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



