EXPLANATION OF TERMS 



An Entire Leaf is one the edge of which is not cut or lobed 

 in any way. (See Rhododendron, PI. XXII., and Closed Gen- 

 tian, PI. CLI.) 



A Simple Leaf is one which is not divided into leaflets ; its 

 edges may be either lobed or entire. (See Rhododendron, PL 

 XXII. ; also Fig. i.) 



.A 



Fig. 1. 



Fig. 2. 



Fig. 3. 



A Compound Leaf is one which is divided into leaflets, as 

 in Wild Rose, Pink Clover, and Travellers' Joy (PI. XL. ; also 

 Fig. 2). 



A Much-divided Leaf is one which is several times divided 

 into leaflets (Fig. 3). 



The Axil of a, leaf is the upper angle formed by a leaf or 

 leaf-stalk and the stem. 



Flowers which grow from the axils of the leaves are said to 

 be Axillary. 



When leaves or flowers are arranged in a circle around the 

 stem they are said to be Whorled, or to form a Whorl. (See Ind- 

 ian Cucumber-root, PL LX; Four-leaved Loosestrife, PL LXVII.) 



A cluster in which the flowers are arranged each on its own 

 stalk along the sides of a common stem or stalk is called a 

 Raceme. (See Cardinal-flower, PL CXXV. ; Shin-leaf, PL 

 XXVI.) 



A Corymb is the same as a raceme, except that it is flat 

 and broad, a raceme becoming a Corymb if the stalks of its 



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