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 the net veined, as lanceo- 

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

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

 most usual form is the linear, like the Grass 



leaf (Fig. 48), which is long 

 and narrow, with sides nearly 

 parallel. The sword-shaped 

 leaf, or ensiform, differs from 

 the linear in having its edges 

 vertical, not horizontal as 

 other leaves. See the Iris. 8. 



26,27. Pedate? Laciniate? State 

 the venation of the above forms. 



28. What is a linear leaf? an en- 

 siform ? Define the word vertical 



Fig. 44. Lanceolate, Lilv of the Valley. Fig. 46. Cordate leaf of Pond- weed. 

 fig. 45. Orbicular, Round-leaved Orchis. Fig. 47. Sagittate leaf of Arrow-uead 

 Fig. 48. Uuear leaves of Blue-eyed Grass (SisyrincKium). 



