LEMANIA. 73 



fluviatile Cand. Flor. fr. 2. 50. Potysperma fluviatilis 

 Vauch. Conf. p. 99. PL 1. fig. 3. et pi. x. fig. 1, 2, 3. 

 Conferva (fluviatilis) Jilis subramosis, setaceis, nodosis, 

 geniculatis ; geniculis torulosis, angulatis, 8fc., Roth. Cat. 

 Bot. iii. 304. Conferva fluviatilis fllamentis setaceis, 

 nodosis ; geniculis elevatis, brevibus, articulis oblongis, 

 cylindraceis, Roth. Cat. Bot. i. 201. ; Fl. German, 

 iii. 528. Conferva fluviatilis var. ft, Encyc. Met. Die. 

 No. 12.; Thore, Chloris, 441. Conferve rameuse var. 

 ft, Lam. Flor. fo. 1278. ix. Conferva (jftuviatilis) Jilis 

 simplicibus, setiformibus, rectis, geniculis crassioribus, an- 

 gulatis, Lin. Sp. 1635. Conferva fluviatilis, lubrica, se- 

 tosa, equiseti facie, Dill. Muse. viii. f. 47. Corallina 

 fluviatilis non ramosa, Vaill. Paris, p. 40. t. iv. fig. 5. 

 Nodularia fluviatilis Lyng. t. 29. Lemania fluviatilis 

 Kiitzing, Phycologia Generalis, p. 322.; Dillw. Brit. 

 Conf. PL ; Hooker, Brit. Flor. ii. p. 322. Conf. fluvia- 

 tilis, English Botany, t. 1766. Lemania fluviatilis 

 Harvey, in Manual, p. 119. 



Hob. In the Winterbourne Stream, Lewes : W. Borrer, 

 Esq. In the stream at Hamsell, and at the Waterfall 

 at Harrison's Rocks in abundance : Mr. Jenner. Com- 

 mon in rapid streams about Aberdeen : Dr. Dickie. 

 Frequent in Ireland : Mr. Moore. 



" The name of fluviatilis, adopted after Dillenius by 

 authors, does not well apply to a plant much less frequent 

 in rivers than any one of its congeners. The name, borrowed 

 from Sebastian Vaillant, better designates our Lemania, and 

 gives a very just idea of its bearing. 



" The Lemania corallina is one of the most common of 

 Confervce ; it is frequently found attached to stones, and upon 

 stakes that are always covered with water, near mill-dams, 

 or against the sides of their channels. I have seen falls which 

 were quite covered ; the more rapid the current the more 

 the Lemania prospered. It becomes sometimes more than 

 half a foot in length, and of a considerable diameter. The 

 plant languishes or dies when any circumstance renders the 

 water in which it has grown stagnant. 



