24 ^^ IntroduSiion to 



A curled leaf [crifpum) is one whofe bor*- 

 der Is plaited and fringed like a furbelow, as 

 the curl'd ox f ring d- leav 'd Mallow ^ fee fig . 39, 



A knawed leaf {erojum) is one whofe linus 

 and difk ap:'eur as if they were eaten oxi their 

 borders, as the Tyenian Clary ^ fee fig. 1 1 . 



An entire leaf {integerrimuni) is one whofe 

 border is quite entire without any kind of in* 

 denture, fee fig. 42. 



The fuperficies of a leaf denotes its furface 

 above and below* 



A downy leaf {tomentofum) is one whofe 

 furface is co veered with hairs fo fmaii, as not to 

 be diftinguiihed by the naked eye, like cotton 

 cloth, as the Mullein, fee fig. 48. 



A velvet leaf {pilofum) is one whofe furface 

 is garniflied with hairs which are difcernible, 

 as in the yimcus, fee fig. 47. 



A hairy leaf [hirfutum) is very near a-kin 

 to the former, but the hairs are longer, as in 

 xht hairy Hawkisueed. 



A ftinging leaf [hifpidum) is one whofe fur- 

 face is covered with rough brittle hairs, which 

 fting the iie(h when handled, and are eafily 

 bj'oken, as in the Nettle, fee fig. 49. 



A rough leaf (fcabrum) is one whofe di{k 

 is covered with fniall inequalities, or tubercles. 



