BY JOHN SHIRLEY, B SC. 



181 



M. a level with the crust, small, crowded, black, pruinose, ashy 

 within ; margin thickish, flexuose, black ; hypothecium black 

 or nigro-fuscous ; spores 8, fuscous, oblong or oblong- 

 ellipso d, 1-septate, large. 



Reported in Frag. Phyt. Aus., Vol. XT,, without locality. 



48. L. parasema, Th. Fries, (non Ach.) 



Thallus albescent or cinerascent, shining, continuous, granu- 

 lar, crustaceous, determinate, bordered by a distinct, black, 

 hypothalline zone. Apothecia black, small, (about ± m.m.); 

 Sn. scattered, not immersed ; disk flat, finally concave ; margin 

 thick, entire, elevate : spores oval, differing considerably in 

 outline, uniseptate, brown, -012 — '017 x -005 — *007 m.m. ; 

 paraphyses slender, not readily separating. 



Hab. — On rocks, Mt. Gravatt. 



49. L. saxatilis, Schaer. 



Thallus white or cinerascent, thinly and evenly crustaceous, 

 more or less continuous, areolate-diffract, areola? polygonal, 

 very even in size, true hypothallus white, Apothecia black 

 Sn. from the first stages, in young forms with distinct margins 

 and flat disks, afterwards sub-convex and margins obscured, 

 slightly raised above the thallus to '5 mm. in diameter; 

 hypothecium nigr -fuscous, spores brown, ovate, 1-septate, 

 •005 x -00*5 m.m. 

 Hub. — On rock-, common. 



50. L. demutans, Stirton. 



Thallus pallid or pale glaucous, somewhat rough or granu- 

 lose, here and there fissured, effuse or bordered by a brown 

 hypothalline line ; apothecia blade, innate or sessile-innate, 

 medium in size, with flat disk, and acutely margined ; spores 

 4 — 8, olivaceous, fusiform-oblong, bilocular, '022 — -03 x 

 Sn. -01 — .013 m.m. ; paraphyses distinct, rather thick, apices 

 clavate, conglutinate, granulate, and with oil-drops sparingly 

 sprinkled ; hypothecium thin, brown ; hym. gel, with iodine 

 s 



