SECTION 7.] 



ORDINARY LEAVES. 



55 



Entire, when 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 Pig 142. 



Dentate, ox Toothed, 



A 



when such teeth point 

 outwards, instead of 

 forwards ; as in Fig. 

 1 13. 



Crenate, or Scal- 

 loped, when the teeth 

 are broad and round- 

 ed ; as in Fig. 144. 



Repand, Undulate, 

 or Wary, 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 outwards ; as in Fig. 146. 



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

 irregular teeth or incisions; as in Fig. 117- 



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

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

 lobed, fhrec-lobed,five-lobed, many-lobed, etc., as the case may be. 



140. When the depth and character of the lobing 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 the blade, if so far, 

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

 and the llepatica. 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 Latin form, bifid, three-cleft or trijid. four-cleft or quadrifid, five- 

 cleft or quinquefid, etc., or many-cleft, in the Latin form, multifid, — express 

 the number of the Segments, or portions. 



Parted, when the incisions arc still deeper, lmt yet do nol quite reach 

 to the midrib or the base of the blade; as in Fig. l"> n . 154. And 

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

 divisions. 



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

 pari of Fig. 151, or to the leaf-stalk, as in Fig. 155 which really make- the 



Fig. 142-147* Kinds of margin of Leaves. 



