1754 CRYPTOGAMIA. ALGM. 1938. Lichen. 



+ j >ithr acinus. Cartilagino- membranous, very brittle, peltate, "ex- 

 panded, irregularly lacinate, blaekifh-grey with raifed dots above, 

 footy black and quite fmooth underneath. Jacq. t. 9./. 4 ? 



deuftus. Membranaceous, peltate, flightly lobed, brown, naked fmooth 

 and pitted underneath : tubercles plaited, becoming convex and 

 wrinkled. Hoffm 3. / 68- 

 4. broterus. Membranaceous, peltate, black-brown, black and pitted 



underneath: with an erroded fieve-like circumference. 

 3 fiocculofus Membranaceous, peltate, brown, rough above with floccula- :nd 

 fcaly fubftances. Jacq 3./. \.f. 2. 



trofus. Membranaceous, peltate, wrinkled, with a jagged fieve- 

 like circumference, black above, grey-brown fomewhat gra- 

 nular and fibrous underneath; tubercles rather convex, plaited. 

 Hoffm. /. 70. 

 *2. torridu** Membranous, peltate, wrinkled, black, with a jagged fomewhat 

 cribrofe circumference, blackifh-brown granular and reticulately fibrous 

 underneath. 



*Jacquini, Membranaceous, thin, peltate, flat, with a rounded 

 fomewhat cribrofe circumference, blueifh- black and quite fmooth 

 above, greyiiTi black with raifed dots and fibres underneath : 

 tubercles minute, with a circular plait or two Dill. t. 30. n8. 



hyperboreus. Membranaceous, peltate, with a jagged circumference, 

 blackifh-brown and wrinkled papillous above, fmooth and obf- 

 curely pitted underneath: tubercles deformed. Hoffm. t. 71. 



+prob»fcideus. Membranaceous, peltate, with ajaggei and crenate 

 circumference, footy-grey and reticulately wrinkled above, paitr 

 naked and fmooth underneath: tubercles turbinate, becoming con- 

 vex, concentrically plaited. 

 Z*exafperatus. Membranous, peltate, blackiih-grey, rough, with crowded 

 nearly erect floceular and fcaly fubftances, Fior. Dan. 471. f. 3. 



erSficus. Coriaceous, thick, peltate, with a rlexuous repand irregular 

 flightly reflected circumference, greyifh above with concentric 

 plaits and raifed dots, glabrous naked and pale ochre underneath 1 

 tubercles becoming globular, with numerous circular plaits* 

 Achar.t. 1 f. 6. 



mefaraus. Somewhat coriaceous, rigid, with many curled lobes* 

 black ifh- grey, brownifh-white underneath, fmooth and naked 

 both fides: tubercles raifed, circularly plaited. Jacq. 2- t.<).f. 5 



*tyVindricu$ % Membranaceous, peltate, with a rounded-lobed circum- 



terence fringed with black, above greyifh-glaucous, naked fmooth 



and ochraceous underneath: tubercles turbinate, becoming con* 



vex, circularly plaited. E. Bet. t. 522. 



2. dentkulatus : Circumference of the frond denticulate and ciliate. 



DHL t. 29./. 116. 



*pellitus. Coriaceo-membranous, peltate, plaited and finuate in the 



circumference, above quite fmooth and copper-brown, beneath 



black hairy with branched fibres of the fame colour: tubercle* 



be owing convex, intricately plaited. Eng. Tot. t. § 3 



-> 1 



