SUPERFICIES OF LEAVES. 



crenate, when the angles are rounded ; or acutely crenate, when 

 the angles are pointed. 



7. Duplicato-Crenate, doubly notched; when the notches 

 are two-fold, the less upon the greater. 



8. Repand, bending back again; when the margin is termi* 

 nated with angles, and interjacent sinusses, that are both in- 

 scribed with the segments of circles*. 



9. Cartilagineous, bristly; when the edge of the leaf is 

 strengthened by a tough border, the substance of which differs 

 from that of the leaf. 



10. Ciliate, lashed or fringed; when the margin is surround- 

 ed on all sides with parallel bristles. 



11. Lacera, rent or ragged; when they are variously cut on 

 the margin into unlike segments. 



12. Erose, gnawed; when the leaf is sinuate, and has other 

 very small obtuse sinusses or hollows on its margin. 



13. Integerrima, very entire; when the outermost margin is 

 entire and quite free from notches. 



VI. Superficies, surface, is the outside, or what covers the 

 disk of the leaf, and respects both the supinef disk or face of the 

 leaf, and prone disk or back of it. Leaves, in respect to their 

 surface, are, 



1. Viscid, clammy; when they are smeared over with a juice 

 that is not fluid, but tenacious, sticky. 



2. Tomentose, downy; when they are covered with a nap of 

 interwoven hairs, scarce perceptible, that gives them a whiteness. 



* A serpentine edge. Editor. 



•\ Supine is what lies on its back, or face upwards ; and prone, the contrary : 

 these terms are, therefore, well applied to the upper and under disk or face of a 

 leaf. Editor. 



