— 
166 MODIFICATIONS OF INCISED LEAVES. 
according to the number of partitions, or segments. The above 
terms are more especially used with palmately-veined simple 
leaves. 
The divisions of the lamina are, however, always arranged 
in the direction of the principal veins. Thus, those of feather- 
veined or pinnately-veined leaves are directed towards the 
midrib (figs. 313, 325, and 326); while those of palmately or 
radiated-veined leaves are directed towards the base of the 
lamina (figs. 331 and 532). Hence, instead of using terms 
indicating the number of lobes, partitions, and segments of the 
lamina, others are generally employed that define the leaf more 
Fic. 327. Fic. 328. Fie $29, 
NTA 
QYy> 
Soy 
é i PE 
nore 
: r veh 
Fic. 330 Z 
re 
& 
J 
Fig. 327. Pectinate or comb-shaped leaf.—VFig. 328. Lyrate leaf of the 
common Turnip (Brassica Rapa)—Fig. 329. Runcinate leaf of the 
Dandelion (Taraxacum officinale). —— Fig. 330, Fiddle-shaped leaf of 
Rumex pulcher. 
accurately, which are derived from the mode of venation com- 
bined with that of incision. Thus, if the lamina is feather- 
veined, and the divisions consequently arranged in that manner, 
the leaf is said to be pinnatifid (fig. 313), as in the common 
Oak ; or pinnatipartite (fig. 825), as in Valeriana dioica ; or 
pinnatisected (fig. 326), as in Papaver Argemone, according to 
their depth, as already described. If the divisions are them- 
selves incised in a similar manner to the original divisions of 
the lamina itself, the leaf is said to be bipinnatifid, bipinnati- 
partite, or bipinnatisected. Or, if the sub-divisions of these 
