CRYPTOGAMIA ALGJE. 975 



In gently flowing brooks and rivers ; and fome- 

 times upon wet moorifli banks dripping with 

 water, where it grows (hort, very tender, and . 

 like green velvet. IV. — X. 



It confifts of fmooth fimple unbranched threads, 

 not diflinguiihably jointed, from a cubit to a 

 yard long or more, as fihe as hairs, of a tender 

 fubftance, and a fhining filky green color, 

 waving with the ftream. 



The length of the threads depends much upoa 

 the place of growth. They are longeft in rivu- 

 lets, and fhorteft in ftagnant waters. In thefe 

 laft it is often widely expanded, and fwims on 

 the furface. 



Linnaeus has obfervM, that it fometimes grows 

 upon thatch'd houfes near the fea fide, together 

 with the ULVA comprejfa. 



In ftagnant waters the threads are fometimes 

 found Ihorter and thicker, not extended at 

 length in one diredbion, but widely expanded 

 and varioufly coil'd, without being entangled 

 together. In this flate they are about the fizc 

 of human hairs, one or two feet long, of a pale- 

 green fhining color. See Dilkn. mufc. 13. /. 2. 

 /. 2. bona. 



CONFERVA filamentis fimplicifllmis sequalibus 



digito brevioribus. Sp. -pL 1633. (Michel, gen, 



R r r ^^211. 



