looo CRYPTOGAMIA ALGiE. 



In ftagnant waters. IV. V. 



It confifts only of a greenifh farina, the particles 

 of which, when view'd with a microfcope, ap- 

 pear to be branched and feathered. Thefe 

 particles concrete upon the fuiface of the wa- 

 ter, and form a wide thin film or pellicle. 



Weis in his Tiant^e cry-ptogamica pag. 19. denies 

 it to be a proper vegetable, afferting it to be 

 compos'd of the particles only of decay'd aqua- 

 tic plants, which, being fpecifically lighter than 

 water, float on its furface. 



fhojphorta BYSSUS lanuginofa violacea lignis adnafcens. 



3* Lin. Sp.pl. 1638. {Michel, gen. -p. 211. ». 12, 



tab. 90. jig. 3. Dillen. mufc. p. 4. tab, i, 



f.6.) 



Violet-color'd ByfTus. Anglis. 



Upon the bark of rotten wood and flicks, in the 



autumn and winter frequent. 

 It creeps upon decay'd wood, in patchesof various 

 fizes, refembling a thin dov^ny membrane, of 

 an elegant blue-violet color. 



■purpurea 4. BYSSUS purpurea capillacea perennis. (Michel. 

 Gen. p. 21!. n. 13. tab. 90. /. 2 .'') 

 Crimfon ByfTus. Anglis. 



Upon the bafe of the abbot Mackinmn^s, tomb, in 

 the ruin'd abbey at J, Coltimb-kilL 



It 



