972 CRYPTOGAMIA ALG^. 



afluage the head-ach in fevers, and to procure 

 fleep ; but the ufe of it in thefe intentions is 

 fupported by no good authority. 



irifpa 6. ULVA tenera crifpa tcrreMs.-^Raii ^nop. p. 64. 



n.i2. (Billen. mufc. 52. /. 10. /. 12. A. B. C. 



D.) 

 Crifped Ground Laver. Jnglis. 

 ^his is found lying upon the ground in fliady 



places, at the foot of walls and houfes. I. II. 

 It confifts of extremely thin, finuated, and curled 



green membranous leaves, wrapt together 



in a heap, very light, and lying loofe upon the 



ground without vifible roots. 



cornuta 7. ULVA fubrigida cornuta terreflris. — (Dilkn. 

 mufc. 52. /. 10. /. 13.) 



Horned Ground Laver. Anglis, 



This is found lying flat upon the ground in a 

 moid fandy foil. It was gather'd near Leiih by 

 Mr. 2''alden. IV. V. 

 ' It is about an inch long, fometimes two or three ; 

 divided deeply,withGut order, into various acute 

 horned fegments j the edges turn'd inwards, 

 otherwife a flat membrane. It is of a pale- 

 green color, and fubftance fomewhat rigid. 



ULVA 



