1644 AN INTRODUCTION 
Difk. Leaves, in refpe& to their Margin, 
are, 
Spinofe, Thorny or prickly; when the 
Margin of the Leaf runs into Points that 
are hard, ftiff and pungent. 
Inerm, unarmed ox fmooth: which is op- 
pofed to Spinofe. 
Dentate, toothed or indented; when the 
Margin ends in horizontat Points, that are 
of the Confiftence of the Leaf, and are fepa- 
sated by intermediate Spaces. 
Serrate, fawed; when the Margin is cut 
into fharp imbricate Angles, that point to- 
wards the Extremity of the Leaf: If they 
point towards the Bafe, the Leaf is faid to 
be retrorfum ferrate, fawed backwards. 
Duplicato-ferrate, doubly fawed; when there 
is a twofold Sergature, the lefs upom the 
greater. 
Crenate, notched; when the Margin is cut 
mto Angles, that point towards neither of 
the Extremities: And thefe are obtufely 
crenate, when the Angles are rounded: or 
acutely crenate, when the -Angles are 
pointed. 
Duplicato-crenate, dowbly notched; wher 
the Notches are two-fold, the lefs upon the 
greater. F 
Repand, bending back again; when the 
Margin 
