646 CRYPTOGAMIA FILICES. 



CLASS IS XXIV. 



CRYPTO GAMIA 



FILICES. 



EQUISETUM. Gen.pL 1169. 



Spica fru6bificationibiis peltatis, bafi dchifcentibuS 

 multivalvi, 

 fylmticumt EQUISETUM caule fpicato, frond ibus compofi- 

 tis. Sp. pi. 15 1 6. (Ger. em.m 4-/. 5) 



Wood Horfe-tall. Jnglis* 



In woods and moid Ihady places. Jufl by the her- 

 mitaore near Edinburgh. Dr. Parfons. At Mal- 

 ncin-tarmonach in Breadalhane. Mr. Stuart. % . V. 



The llalk is from a foot to a cubit high, angular, 

 and rough to the toucli, the angles being edged 

 with (honfpimiU, fcarcely vifible without a mi- 

 crcfcope. The joints are fheathed with large, 

 yellowifb, membranaceous, lax vagina, which 

 are divided commonly into three or four deep 

 triangular dents. At the bafe of thefe vagina^ 

 there coalcfce generally twelve green, acute 

 dents. The leaves grow verticillate, twelve or 

 more in a whirl. The whirls are about an inch 

 diftant from each other. The leaves are very 

 flender, nearly quadrangular, about five inches 

 ^ong, pendent, and beiet with feveral other fe- 

 coriui.-^' whirls, fo that it refembles a pine-tree 



in 



