LEAF-FORMS AND FIGURES. 



25 



27. The singular leaf of Monk's-hood ap- 

 pears as if gashed with scissors, and may 

 be called laciniate^ or gashed (Fig. 43). 



28. The parallel-veined leaves may have 

 figures similar to tlie net- veined, as lanceo- 

 late (Fig. 44), orbicular (Fig. 45), cordate 

 (Fig. 46), sagittate (Fig. 47), &c.; but the 

 most nsnal form is the linear^ like the Grass 



leaf (Fig. 48), which is long 

 and narrow, with sides nearly 

 parallel. Tlie sword-shaped 

 leaf, or ensiform^ diflers from 

 the linear in having its edges 

 vertical, not horizontal as 

 other leaves. See the Iris. 8. 



26,27. Pedate? Laciniate? State 

 tlie venation of the above forms. 



28. What is a linear leaf? an en- 

 siform ? Define the word vertical. 



/iy. 44. Lanceolate,— Lily of the Valley. Fig.^G. Cordate leaf of Pond-\Yeed. 

 fig. 45. Orbicular,— Kdund-leaved Orchis. Fig. 47. Sagittate leaf of Arrow-head. 

 Fig. 48. Linear leaves of BUie-eyed Grass {Sisi/rinchi'um). 



