32 PRINCIPLES OF BOTANY, ETC: 
Crenated, (crenatum), when the margin is set 
with small and round notches, having at the same 
time a perpendicular position. 
54, Repand, (repandum), when there are on the b 
margin small sinuses, and between them segments 
of a small circle, fig. 20. 
55. Yoothed, (dentatum), when the margin is set 
round with small pointed and distinctly separated 
tect, hes 32: 
56. Duplicato-dentate, (duplicato-dentatum), when 
each small tooth of the margin is again dentated, as 
in the elm, Ulmus campestris, fig. 248. 
57. Dentato-crentate, (dentato-crenatum), . when 
each tooth is set with small arid round denticull. 
58. Serrated, (serratum), when the teeth, on the 
margin are very sharp pointed, and stand so close 
that one seems to lie on the back of another. 
59. Gnawed, (erosum), when the margin is une- 
qually sinuated, as if it had been gnawed, as in 
some species of sage, Salvia, 
60. Spiny, (spinosum), when the margin is set 
with spines, as in the thistle, Carduus. 
61. Fringed, (ciliatum), when the margin is set 
round with strong hairs, of equal length, and at a 
considerable distance from one another. 
e. In respect of their Surface. 
62. Aculeated, (aculeatum), when the surface is 
covered with spines. 
Hollow, (concavum), when there is a hollow 
in the middle of the leaf. 
64, Chan- 
