CRYPTOGAMIA. ALGAE 1938. Lichen. 1757 



gemmatus. EfFufe, very thin, glpucmis-wjiite; tubercles fcattered, 

 hemifphaerical, warty, black, poiiuV.d Ach. t.%.f. 1. 

 2. drypgenm. Thj-n, clfxivi, uneven, dirty g»ey: tubercles nearly globular, 

 warty fc4«ck, becojrilrt* perforated. 



fafpineus. Thin, black ifn brown, determined, edged with black : 



tubercles heta-ifph$Tlc4fl, warty, black, 

 Tttractrcs* Effufe, fpinewriat membranous, fmooth, grey-olive; tu- 

 bercles fcattered, hewiifpltericat, grey-olive, ' becoming gla- 

 brous warty and bheii at'lhe tip.-' 



afpijieus. Membranous : policed, green i ill yellow edged with black; 

 tubercles crowded, hemifphaerical, greenifh-yellow, becoming 

 warty and black at the tip, falling off and leaving a Oiie'd-like 

 hollow edged with black. 



.nitidus. EiTufe, carnliigiao membranous, fmooth, pale greet) Hh : 

 tubercles crowded, himifphaerical, becoming biueiih-black at 

 top, mining, warty, at length umbiiicate. fVeig* t. i.f. 14. 



'*umbrinus. Solid, minutely cracked, dark olive-black: tubercles of 

 the fame colour and black, c#noid with a central pore. 

 Eng. Bot. /, 1499. 



iigniQtus* EfFufe, uneven, granular-warty, mealy, black, opake : 

 tubercles inclofed, globular, deep black, warty, furrounded with 

 the raifed tumid margin of the wans. 



muturuj. Thin, eifufe, fmooth, rather polimed, deep black: tubercles 

 concealed, prominent, umbiiicate at top. 



etlpimus. EfFufe, warty, chefnut-brown; the warts fmooth and bear- 

 ing the tubercles; tubercles immerfed, globular, black, depreiTo- 

 limbiricate with an elevated central 'wart, furr£bnded wkh the 

 tumid obtufe margin of the wart- 



picinus. EfFufe, granular and fomewhat imbricate, dark olive- brown: 

 tubercles convex, black.' 



Qcrvtcllus. Cruft nonet tubercles difperfed, convex, rather conflu- 

 ent, unequal, minute, umbilical, black- brown. 



Jlriatulus. Thin, dendritically figured, black; in fe par ate deformed 

 fomewhat linear branched or radiate patches bearing the tub* r 

 cies: tubercles raifed, conic, truncate, black, impreffed at top, 

 with a rather acute margin. 



teuthocarpus. Irregularly determined, cracked in patches, broken, 

 black, opake, with a cut-cienate margin: tubercles immerfed, 

 with a prominent wart at top. 



tcsllatus. EfFufe, uninterrupted, fomewhat cartilaginous, greenilh : 

 tubercles immerfed, flat, warty, their cruft with a fomewhat 

 ocellate margin. 

 fpongiofus. Spongy, thickifh, green: tubercles immerfed, pitchcr- 

 fhaped, perforate with a pore, black. 



epigeus. Pale yellowifh: tubercles immerfed, punctiform, black. 



