130 LEAVES. 



or beset with prickles, as in the Holly and Thistle : 

 Ciliate or fringed like the eye lashes, as in Moss Pink j 

 and Dentate or beset with numerous distant teeth, as 

 in the Arrow-wood, Viburnum dentatum. The leaves 

 of the Beech tree are both Ciliate and Dentate. Ser- 

 rate leaves are beset with teeth like a saw, all of which 

 point toward their summits. The Rose, Apple and 

 Peach leaves are examples. 



Crenate leaves are like the edge of a common dining 

 plate, having rounded projections inclining to neither 

 extremity, as in Penny wort and Gill. Fig. 32. 



When the teeth or projections are very minute, the 

 terms Denticulate, Serrulate and Crenulate are employed. 



When the projections of a serrate leaf are beset with 

 minute serratures, it becomes Doubly -serrate, and 

 the same rule is extended to the dentate and crenate 

 leaves. 



A Repand leaf, Fig 47, is bordered by numerous an- 

 gles, which appear as if formed by the excision of a 

 small segment of a circle. 



Sometimes a leaf appears as if it had been irregularly 

 cut, notched or eaten, and then it is termed Erose. 



When the margin is rolled backwards a leaf is said 

 to be Revolute, and Involute when its border is turned 

 towards its superior surface. 



7. SURFACE. 



With respect to Surface, Leaves are Dotted, or 

 as they are sometimes termed Punctate, as in the Or- 

 ange, Lemon, and different species of Hypericum. 

 When the veins are tighter than the intermediate sub- 

 stance of a leaf it is said to be Rugose or wrinkled, as 

 in the Foxglove and Sage. If the inequalities thu? 



