850 CRYPTOGAMIA ALGJE. 



On moid fhady rocks, and about the roots of trces^ 

 not uncommon -, as in the Knock-Linn^ Gienkill- 

 Linn, and many other places in the parifhof 

 Kirkmiehael, in Dumfriesjhire, Dr. Burgefs, 



The leaves, when young and frelli, are of a dull 

 or fufcous green colour;, when old or dry, of a 

 brown red colour, widefl: towards the extremi- 

 ties, and obtufely lobed. The under fide of the 

 leaves is every where reticulated with dark fuf- 

 cous downy veins, except at the extremities of 

 the fegments, which are deftitute of veins, and 

 a little downy and white when frefh, buff-color'd 

 when dry, and furnifhed with a few fibrous ra- 

 dicles. 



The fhields grow out of the ends and margins of 

 die fegments, a little elevated, and are oval, flat 

 and horizontal, of a chocolate colour on the fur- 

 face, but whitifh or buff unde^eath. 



The female varieties of this Lichen have undu- 

 lated curled farinaceous margins, and fometimes 

 the difc of thfir leaves is fprinkled with-wart/ 

 grains. Se^ Dtllen, t. 28./. 104. C. 



jcrohieula- L. coriaceus repens lobatus obtufus, ftipernefcro- 



tiis. 61.. biculatus verrucofus, inierne villbfus tumoribui 



albidis, {Michel, gen. t. 49, ord. 21. Dillen. rmfc. 



t. 29./. ihO l^'Jcrobicutaius. Scopol. Carniol^ 



Pitted warty Lichen^ v/ith broad glaucous leaves., 

 Anglts. I 



Aikraw. 



