SECTION 7.] 



ORDINARY LEAVES. 



55 



142 



113 



144 



145 



140 



147 



Entire, whea their general outline is completely filled out, so that the 

 margin is an even line, without teeth or notches. 



Serrate, or Saw-toothed, when the margin only is cut into sharp teeth, 

 like those of a saw, and pointing forwards : as in Fig. 142. 



Dentate, or Toothed, 



A 



when such teeth point 

 outwards, instead of 

 forwards ; as in Fig, 

 143. 



Crenate, or Seal- j 

 loped, when the teeth j 

 are broad and round- i ^ 

 ed ; as in Fig. 144. ^ - 



Repand, Undulate, \ 

 or Wavy, when the \ 

 margin of the leaf 

 forms a wavy line, 

 bending slightly in- 

 wards and outwards in succession; as in Fig. 145. 



Sinuate, when the margin is more strongly sinuous or turned inwards 

 and OTitwards ; as in Fig. 146. 



Incised, Cut, or Jagged, when the margin is cut into sharp, deep, and 

 irregular teeth or incisions ; as in Fig. 147. 



Lobed, when deeply cut. Then the pieces arc in a general way called 

 Lobes. The number of the lobes is briefly expressed by the phrase two- 

 lobed, three-lobed , Jice-lobed, ma nj/ -lobed, etc., as the case may be. 



140. When the depth and character of the lol)!ng needs to be more par- 

 ticularly specified, the following terms are employed, viz. : — 



Lobed, in a special sense, when the incisions do not extend deeper than 

 about half-way between the margin and the centre of tlie blade, if so far, 

 and are more or less rounded ; as in the leaves of the Post-Oak, Fig. 148, 

 and the Hepatica, Fig. 152. 



Cleft, when the incisions extend half way down or more, and especially 

 ^hen they are sharp ; as in Fig. 149, 153. And the phrases two-cleft, or, 

 in the L'ltin form, bijid, three-cleft or trifid, four-cleft or quadrifid, five- 

 cleft or fini/iquefid, etc., or mang-cleft, in tlie Latin form, midtifid, — express 

 the number of the Segments, or portions. 



Parted, when the incisions are still deeper, but yet do not quite reacli 

 to the midrib or the base of the blade; as in Fig. 150, 154. And 

 the terms tico-parted, three-parted, etc., express the number of such 

 divisions. 



Divided, when the incisions extend quite to the midrib, as in the lower 

 part of Fig. 151, or to the leaf-stalk, as in Fig. 155 ; Avhicli really makes the 



Fig. 142-147. Kinds of margiu of leaves. 



