CONFERVA ATRA. 



C. filamentis ramofiffimis moniliformibus fub-gelatinofis; ramulis fetaceis 

 articulis apicem verfus dilatatis ciliatis, ciliis verticillatis imbricatis. 



C.atra. FI. Ang. p. 947 . With. IV. p. , 34 . Eng. Bot. t. 6 9 o. 



C. fontana, nodofa, lubrica, filamentis tenuiffimis nigris. Dill. Mufc. p. 39 . t. 7 . 



In Rivulets and Springs; in a fmall Rivulet flowing into Gors Velen Lake, near 

 Llanfaethly, and in a Spring called Ffynnon bach y Lus g in Gors Bach, between 

 the Church and Trefadog, in the Ifle of Anglefea, Breve,: Near Martin in 

 Surrey, Hudson, Near Croydon, Dickson. At Lound, near Yarmouth, D. 

 Turner, Esq. 



THIS rare and beautiful fpecies, though well reprefented by Dillenius and 

 defcnbed by Hudfon, appears to have been but imperfedly known to modern Bo- 

 tannls, tJI it was figured in Engliffi Botany from a fpecimen gathered in a rivulet at 

 Hopton near Yarmouth, by my friend Dawfon Turner, who favoured me with the 

 magmfied drawing, fig. 2 , f rom the ddicate penc; , rf ^ ^^ ft ^^ 



perhaps, to be confidered one of the mofl rare of the Britiffi fpecies; its nature 

 and appearance being f uc h, that it is hardly poffible to fuppofe it mould have been 

 often overbed nor does it feem to be known to D, Roth, or any foreign 

 otam*. The places of growth that it prefers, are limped rivulets, -where it is 

 ound rn.ed wuh C. gelatinofa, to which it has more affinity than to any other 

 known plant of the genus. Its colour, which in its earlieft fiage i s , pale green 

 vanes m the feveral periods of its growth through the different ffiades of green, tiU 

 at laft u becomes almoil black: on a clofe examination to the naked eye, it has the 

 appearance of a firing of minute beads, which when the plant is high, magnified 

 P-e S to be occasioned by each joint being thickened towards its a P e x by whorls' 



