56 



LEAVIiS. 



[SECTION 7 



leaf compound. Here, using the Latin form, the leaf is said to be bisected, 

 trisected (Fig. 155), etc., according to the number of the divisions. 



141. The Mode of Lobing or Division corresponds to that of the 

 veining, whether pinnatefy rnm:d or palmately veined. In the former the 

 notches or incisions, or sinuses, coining between the principal veins or ribs 

 are directed toward the midrib : in the latter they are directed toward the 

 apex of the petiole ; as the figures show. 



142. So degree and mode of division may be tersely expressed in brief 

 phrases. Thus, in the four upper figures of pinnately veined loaves, the 

 first is said to be pi /mutely /<>^e</ i in the special sense), the second pinnately 

 cleft (or pinnatijid in Latin form), the third, pinnately parted, the fourth 

 l>iii nut >'li/ i/lrided, or pinnatisected. 



143. Correspondingly in the lower row, of palinatcly veined leaves, the 

 first is palmately lobe/1, the second palmntehf clfft, the third palmulelif 

 parted, the fourth pal /a at el// divided. Or, in other language of the same 

 meaning (but now less commonly employed), they are said to be digitately 

 lobcd, cleft, parted, or divided. 



144. The number of the divisions or lobes may come into the phrase. 

 Thus in the four last named figures the leaves are respectively palmately 



in 



(hrr<>-l<ibrd, (hrce-clrft for trifid), three-parted, llirce-diriili-d, or better (in 

 Latin form), IriwItiL And so for higher numbers, v&five-lobed, five-cleft, 



FIG. 148, piimati'ly I<>l>.-d; 149, pinnately cleft; 150, pinnately parted; 151, 

 pilmately divided, leaves. 



Fi'i. 152, palinati-ly tlnvc-loln-d ; I'.ri, jialmati-ly three-cleft; 1">4, jialmately 

 tlirc-r pai-lnl; l.'o, ]ialinatrly tlircc ilivi.lcd cir dlstrti-d, K-aves. 



