LEAF-FOKMS AND FIGURES. 



25 



27. The singular leaf of MonkVliood 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. 4G), sagittate (Fig. 47), &c. ; but the 

 most usual form is the linear^ like the Grass 



leaf (Fig. 48), which is long 

 and n arrow, witli sides nearly 

 parallel. The sword-sbaped 

 leaf, or ensiform^ differs from 

 the linear in having its edges 

 vertical, not horizontal as 

 other leaves. See tbe Iris. 8. 



26,27. Pedate? Laciniale ? State 

 the venation of the above forms. • 



28. What is a linear leaf? an en- 

 siform ? Define the word vertical. 



Fig. 44. Lanceolate, — Lily of the Valley. Fig. 4G. Cordate leaf of Pond- weed. 

 Fig. 45. Orbicular,— Kound-lcavcd Orchis. Fig. 47. Sajjittate leaf of Arrow-head. 

 Fig. 48. Linear Laves of Bluo-oycd Grass {.Sin^rinvhium). 



