160 



ORGANOGRAPHY. 



Fig. 306. fid {fig. 293), as in the common Oak, or 



pinnatipartite (fig. 304), as in Valeriana 

 dioica, or pinnatisected (fig. 305), according 

 to their depth, as already described. If 

 the divisions are themselves divided in a 

 similar manner to the leaf itself, it is bipin- 

 natifid, bipinnatipartite, or bipinnatisected, 

 &c. Or, if the subdivisions of these are 

 again divided in a similar manner, tripin- 

 natifid, tripinnatipartite, tripinnatisected, &c. 

 Or, if the leaf is still further divided, it is said 

 to be decomposed, laciniated, or slashed. 



Certain modifications of these forms again, 

 have also received special names ; thiis 

 when the lobes of a pinnatifid leaf are 

 very close and narrow, like the teeth of a comb (fig. 306), it is 

 pectinate, as in the Water INIilfoil, all Mertensias, &c. ; if the 

 terminal lobe is large and rounded, and the lateral lobes which 



Fig. 306. Pectinate or 

 comb-shaped leaf. 



Fig. 30 : 



Fig. 308. 



Fig. 309 



Flo. 307. Lyrate leaf of the 

 common Turnip (Bras- 



sica linjm) Fig. iV)S. 



Kuncinute leaf of Dan- 

 delion {Leontodon Ta- 



rn.r(icuni). Fig. 309. 



Fiddle-shaped leaf of 

 liumcx puldicr. 



arc also more or less rounded become gradually smaller towards 

 the base (fig .307), it is hfrate, or It/re-shaped, as in the common 

 Turnip andHarbarea ; when the terminal lobe is triangular, and 

 the other lo])CS which are also more or less of the same shape 



