1758 CRYPTOGAMIA. ALGAE. 193$. Lichen. 



ihufcofus. Gelatinous, efFufe, uninterrupted, quite fmooth, greenifti- 

 black: tubercles minute, a little prominent, umbilicate, black. 



velutinus. EfFufe, very thin, dull green: tubercles emerging, globu- 

 lar, conoid-papillate, black. Arch. Bot. 4. /. \. f. 3. 

 7. Tubercles immerjed in the frond \ opening at length by a central 

 pore, filled with cafes bearing feeds., rarely falling off': frond cru- 

 fftjceo-foliaceous $r peltate. Jindocarpon. 



*Hedwigii, Foliaceous, thickiih, with ditHncl: fmall rounded-angular 

 lobes, dull glaucous-green, white on the margwi and underneath, 

 naked both fides. Eng. Bot. /, 595. 

 fquamulofus. Foliaceous, thickilh, feme what imbricate, greygreenifh 

 brown, beneath grey woolly; lobes cluttered, roundifh, deformed, 

 repand- (obed, with the margin of the fame co>our. 



lachenus. Foliaceous, imbricate, brownifh-green, beneath black 

 fpongy, ltjbt- s fmall, a litt'e. incumbent, rounded, (lightly crenate, 

 flexuons DHL t. 30./'. 135. 



euplocus. Foliaceous, fomewhat peltate, deeply lobed; lobes fmall, 

 cluftered, rounded, ikxuous, erenate, braify-green, pale yellow 

 beneath, naked both fides. Ach. t. 3./'. 4- 



plyllifcus. Somewhat gelatinous, a little umbilicate or imbricate, 

 minute, plaited, undulate, black brown, beneath naked, black- 

 brown, cut-lobed; lobes roundilh, with a tumid margin.* tuber- 

 cles raifed, hemilphcsrical, black-brown, perforated. 



leptophyllus. Fuliaceou-, peltate, minute, black-brown, black beneath^ 

 naked both fides, with a rounded lobe- repand circumference. 

 Ach.t. 3./. 3. 



*mi}ii3tus foliaceous, peltate, pale, with minute excavations t 

 beneath fmooth fulvous becoming wrinkled, with a repand-lobed 

 circumiertnee. E Li$t, t. 593. 



*ccmpUcatus. Foliaceous, complicate!)' fubimbricate, grey-brown, 

 with raifed black- brown dots, beneath blackilh-brown^ lobes 

 rather erecl, rounded, plaited convolute. Eng. Bot. t. 593./. ztk 



*Weberi Foliaceous, fomewhat coriaceous, complicate, grey, greenifh- 

 1 .rown; ochraceous underneath, naked both fides: lobes crowded* 

 flexuons, deformed, irreguiar, cut-lobcd. Eng- Bot. t. 594. 



tephroides Somewhat foliaceous, grey, with a repand-lobed circum- 

 ference; apertures of the tubercles prominent, biack. 



*fmaragdulus. Cartilagino- foliaceous, fomewhat peltate, appreffed,. 

 rounded, entire, greenifh-yellow, pater underneath: tubercles 

 immerfed, rather concave, brown. Eng. Bot- t. 1512. 

 Jinopic.us. Cruflaceeus, areolate, deep red, with a rounded lobed 

 circumference : tubercles depreiled, rather acute, deep red, at 

 length perforated. 



Thunbergii. Foliaceous, peltate, orbicu'ar, yellow-green, black- 

 brown beneath, naked both fides : tubercles protuberant* rutty- 

 black. 



