BY JOHN SHIRLEY, B.SC. 



31 



Differ? from S. aurata in the granular, not powdery, margin 

 of thallus, also in size and general features. 



. S. aurata, Ach. 



Thallus broad, firm, smooth, not pitted, lobed ; lateral 

 margins of laciniae with suberect crenulations, old gold in 

 colour, lacinise bright brown, buff or copper-red, with bright 

 gold edges and tips ; ultimate segments of laciniae obtuse ; 

 fracture golden ; under surface black-brown, shortly tonien- 

 tose, rugulose towards margins ; pseudocyphella? punctiform, 

 orange-yellow. Apothecia large, subpedicellate. marginal or 

 sub-marginal : disk blackish ; margin usually inflexed ; 

 spores normally 1 — (sometimes 3 — ) septate, ellipsoid, 

 colourless in young state, becoming brown with age ; -02 — 

 Sn. -025 x -005 num. Differs from S. crccata in the upper 

 & surface of the thallus being smootliish and margined with 

 L golden-yellow sored ia ; the apothecia marginal, and the 

 margins sometimes golden-yellow. 



Syn. — S. anguststa,Dtf/.,Parmosticta aurata, A ?//., Nephroma 

 aurata, Per?, 



Bab. — On tree trunks Maroochie and Toowoomba. 



v. pallido-glaucescens C. K. Thallus pale glaucous : allied to 

 S. flavissima, which it very closely resembles in the colour 

 and lobation of the thallus, and in the size and shape of the 

 spores ; latter -0o x -U025 m.m. 3 (or more)-septate. 



Hob. — Mt. Mistake, chiefly on terminal branches of trees. 



2d. S. flavicans, Hook et tayL 



Thallus spreading, incisate-lobate, glaucous or yellow-green, 

 bare, glabrous, with rotundate, somewhat entire lobes ; 

 beneath yellow-brown, somewhat shining ; marginal lacuna? 

 crowded, elongate, granular, uniformly sub-flattened, 

 sprinkled with minute yellow soredia ; medullary tissue 

 gamboge-yellow, showing itself conspicuously wherever the 

 K. cortical layer has been broken by cepholodia or isidia, fissures 

 or erosions. Apothecia medial and terminal, stipitate, con- 

 cave ; disk redd ish-bi own ; margin sub-entire concolorou s 



