GRYPTOGAMIA ALGJE. 785 



I here is a variety of this with fhorter and rounder 

 leaves, but in other refpeds not differing from 

 the preceding. Sec its fig. Dilleft. mufc. t. 72. 



/• 33- 



**** SurcUlis undjque imhricdtis^ foliolis fparjis, 



J. furculis teretibus, fdliolis undique imbricatis. 

 floribus pedunculatis. Sp, pi. 1601. {Dillen.fnufc. 



A73-/-3«->> 



Silvery alpine Jungermannia. Ahglis. 



Upon the moid rocks by the fides of rivulets, on 

 the Highland ntiountains frequent, as on Ben- 

 Lomond^ Goat fields in Arraity &c. IX. X. 



The ftalks grow in tufts, from one to two inches 

 high, erefl, cylindrical, about the thicknefs of 

 a Slken thread, having a few irregular branches^ 

 clofely imbricated all around with minute con- 

 vexo-concave lea^'es, of a fliining filvery colour, 

 refembling the BRYUM argenteum. The roots 

 or bottom of the ftalks are black and fibrous. 



T^>e anthers are fufcous, fupported on white pel- 

 lucid peduncles, i-8th of an inch long, arifirig 

 from finely indented vagina, which grow on the 

 fummits of the branches. 



I'he plant, when dry'd, lofes Its glofs, becomes 

 brittle, and turns to a grcenifh grey colour. 



There is either a very fingular variety of this, or 



elfe a diftinft fpecies, found not unfrequently 



upon the dry rocks on the Highland mountains, 



and which is taken no notice of by authors. 



E c c The 



