BY JOHN SHIRLEY, B SC. 



85 



* Thallus lead-coloured. 



I j. tremelloides, L. 



Thallus lead-coloured, with or without a glaucous or oliv- 

 aceous east, thin, smooth, membranaceous, netted veined in 

 long narrow meshes by inoniliform gonimia, lobate, imbri- 

 cate and crispate. Apothecia ruf«»us or rufescent, elevate, 

 Sn. urceolate or plane, at tinier almost pedicellate ; margin 

 thick entire, elevated, leal-coloured ; spores 8, colourless, 

 ovoid or ellipsoid, 3-septate, narrowed at both ends irregu- 

 larly mural ilocutar *0l8x*006 — '009 m.m. ; thecal hnear- 

 clavate ; paraphyses difficult to separate, and with slightly 

 dilated tips. 



Hah. — Common on roHks and trees. 



L. diaphanum, Sir. 



Thallus of L. tremelloides but lighter in colour and yt more 

 delicate formation ; surface veined in meshes with equal 

 diagonals. Apothecia as in L. tremelloides, but with pale 

 margin to fruit in place of one concoloi ous with thallus : 

 Sn. spores colourless, orate, acute at one or both ends, murally 

 divided into oblong cellules, 5-7 septate, seldom more than 

 3 cellules in any transverse series, 02 — 025x*0I — 012 

 m.m. Paraphyses slender, with HNO3 separating. 

 Hab. — -Enoggera. 



L, margin ellum, Sw. 



Thallus lead or slate-coloured, appressed, rugulose-plicate : 

 lobes imbricate with slightly upturned margins ; upper 

 M surface thickly and plainly netted- veined with the strings of 

 naked gonimia ; under surface faintly nerved. Apothecia 

 small, marginal, pal* 1 , crowded, immature, testaceous. 

 Syn. — L. tremelloides v. maiginellum. 



Hab. — Sankey's Scrub on trees, covering other lichens and 

 mosses. 



** Thallus greenish. 

 4. L. phvllocarpum, A///. 



Thallus green or pale brownish green, apprpssed rosette- 

 shaped ; lobes imbricite, little divided, margins ascending, 

 recurved, often isidiose. Apothecia reddish, flat, somewhat 



