BY JOHN SHIRLEY, B.SC. 



47 



crenulate at the margins, central portions fused and soredioid 

 with indistinct divisions ; beneath with short dirty white 

 fibrils. Apothecia numerous, immersed then raised ; margin 

 thin, pale, crenate or crenate-striate, crowded, 2 — 5 m.m. 

 M. in diameter ; spores 8, oval or ellipsoid, broadly margined, 

 simple, hyaline, "018 — *019 x '009 — '01 m.m. ; hym. gel 

 blue with iodine ; paraphyses discrete, very delicate, scarcely 

 coloured at the apex. 



From specimen sent by Rev. F. R. M. Wilson. 



Syn. — Parmelia sphinctrina Mnt., Parmelia rubiginosa v. 

 sphinctrina, Hook. 



2. P. dispersum, Stirton. 



Thallus pallid or pale fawn-coloured, squamulose, with 

 scattered squamules, at length contiguous and imbricated, 

 margins crenate and set in a black hypothallus. Apothecia 

 Sn. brown or brown-black, plane, with an inflexed thalline 

 margin ; spores 8, simple, ellipsoid or often fusiform ellip- 

 soid, 018 — "025 x 009 — -011 m.m. ; hypothecium reddish. 

 Hym. gel. with iodine lightly caerulescent then wine red. 

 Dr. Stirton in Proc, Roy. Soc. Vic. Sept., 1880. 



3. P. Karstenii, J. Muell. 



M. Reported in Vic. Nat. for Oct. 1887. 



Sub-tribe, II. — Pannariei, Ay*. 



Thallus of a lurid colour, pallid, cinereous or fuscescent, lacin- 

 iose, squamulose, granulose or placodioid. rarely mono- 

 phyllous, provided with gonimia not gonidia. Apothecia 

 either lecanorine or biatorine (rarely entirely black and leci- 

 deine), spores 8, colourless, (occasionally faintly and atypically 

 fuscescent), ellipsoid or oblong, (exceptionally 1 — 3- septate) ; 

 paraphyses discrete, often coarse. Spermagonia furnished 

 Avith arthro-sterigmata, and spermatia as in Psoroma. Nyl. 

 Syn. Lich. p. 27, Vol. II. 



II. — Pannaria, Del. 

 Thallus laciniate and radiate, or granular and scaly, distinctly 



