DIAGRAMS 



KEY 



Trees and shrubs with compound leaves. 



3-foliolate leaves: 



Opposite leaves ........ 



Alternate leaves ........ 



Digitate leaves ......... 



Pinnate leaves : 



Simply pinnate leaves: 



Opposite leaves . ....... 



Alternate leaves . ....... 



2- or 3 -pinnate leaves (sometimes simply pinnate) 



Trees and shrubs with normally simple or no leaves (if the leaves 

 are compound, they are very small beyond the seedling stage). 



Lohed leaves : 



Palmately lobed leaves : 

 Opposite leaves . 

 Alternate leaves . 

 Pinnately lobed leaves 

 Leaves normally absent or nearly so ^ 

 Monocotyledons with simple leaves 

 Conifers (resinous plants with needle-like or scale-Uke leaves, 



including pines, firs, yews, cedars, cypresses, and junipers) 

 Non-coniferous heath-like shrubs with leaves not usually longer 

 than \ inch ......... 



Trees and shrubs with simple linear leaves, not included in any 

 of the above groups ....... 



Trees and shrubs with simple opposite or whorled leaves, not 

 included in any of the above groups : 



Prickly or spiny ......•• 



Toothed leaves: 



Leaves in whorls ....... 



Leaves in opposite pairs ...... 



Entire leaves ......•• 



Trees and shrubs with simple alternate leaves or leaves in 

 alternate clusters, and not included in any of the above groups : 



Toothed leaves ........ 



Entire leaves ^ ....... • 



FIGS. 



I A-J 

 I K-3 



4-6 



7-9 D 



9E-17 



18-23 



23-26 c 

 26 D-3I 



32-36 



37 

 38-40 



41-47 

 48-49 



50-53 



54 



55 

 56-64 



65-77 



78-1 I I 

 I 12-128 



^ Deciduous trees and shrubs can only be tested in the leaf-bearing season. 



* See also Figs. 79 J and K, 95 G and 97 M. 



12 



