994 CRYPTOGAMIA ALG^. 



rupejlris CONFERVA filamentis geniculatis ramofifTimi; 



22. viridibus. Sp. pi. 1637. {Dillen. mufc. 28. 

 /. 5./.29.) 



Green Rock Conferva, or Sea Beard. Anglis. 



Upon the fea rocks plentifully. 



This is commonly about two or three inches long, 

 of a deep green color, confitting of numerous 

 very llender jointed and branched threads ari- 

 fing from the fame root, and forming thick 

 bundles or clufters, dilated upwards. The 

 branches grow without order, and are moft nu- 

 merous towards the fummits of the threads. 

 The joints are pellucid, clofe and fine, and a 

 little contrafted at the interfedions, where the 

 color is a very dark green, 

 p. There is a frefh-water variety of this, of a paler 

 green color, divided into fewer branches at the 

 extremities, which is the only difference. It is 

 figured by Didenitis. Hifi. mufc. t, S-fs- ^8. 



It grows upon the planks and boards, that are 

 conilantly wet, about water-mills. 



ncduhfa CONFERVA filamentis geniculatis ramofiflimis. 



23. artiailis nodulofis, frudificationibus tubercii- 



latis lateralibus. CONFERVA elongata? 



Hudf. LI. Angl. 484. n. 25. {Dillen. mufc, 2§, 

 t. 6 / 38. 



Red knotted fea Conferva. JngUs. 



On 



