



o 



Cjtavefcem. Roth. Ca/. Bot. II. p. 224. III. p. 241. i 7 /. GVrm. III. 

 parf. 1. p. 511. 



In the Ditches at Cley, Norfolk ; Mr. Hooker. In the New River at 

 Stoke Newington ; Mr. Woods. 



This fpecies, though nearly allied to C. frafla, is diftinguifhab'e by its 

 more (lender filaments and by its longer joints. The drawing at plate D 

 was made by Mr. Hooker, and reprefents the plant magnified 3 and 2. 



97. fraSla. C. filis ramofiflimis flexuofis viridibus ; ramis ramulifque divari- 

 catis fub-alternis ; articulis diametro quintuplo lorigioribus demum oblongis. 

 T. 14. 



This is a very variable fpecies, fo much fo that in particular fituations 

 it approaches fo clofely both to the preceding and following one as to 

 require fometimes great care to diftinguifh them. It has been already 

 noticed in the Introduction that it is the C. vagabitnda of Hudfon. 



98. flexuofa. C. filis dichotomo-ramofis, rigidiufculis, faturate viridibus; ramis 

 flexuofis; ramulis fub-fimplicibus, tenuiffimis, alternatim fecundis, patenti- 

 bus, articulis diametro duplo longioribus. T. 10. 



99.* Hutchihjta. C. filis ramofiffimis, flexuofis, fub-cartilageneis, fragilibus, 

 glauco viridibus ; ramis ramulifque fparfis, ultimis fecundis adpreflis ; ar- 

 ticulis torolofis, diametro duplo longioribus. T. 109. 



100. diffufa. C. filis dichotoma-ramofis, flexuofis, rigidis, viridibus; ramis 

 diffufis remotis ; ramulis brevibus approximatis, obtufis ; articulis cylin- 

 draceis, diametro quadruplo longioribus. T. 21. 



101. rupeflris. C. filis ramofiffimis, flriclis, virgatis, fafciculatis, intense viridi- 

 bus ; ramis adpreflis, obtufis ; articulis cylindraceis, diametro fub-quadruplo 

 longioribus. T. 23. 



102. glomerata. C. filis ramofiflimis, rigidiufculis, viridibus; ramis alternis ; 

 ramulis brevibus, fecundis, fub faftigiatis, penicilliformibus, obtufiufculis ; 

 articulis diametro quadruplo longioribus. T. 13. 



