THE LICHEN FLORA OF QUEENSLAND, 



P. petrophyes, C. K. 



Thallns a faded white, with the matrix occasionally laid 

 bare. Apothecia enclosed in thalline verruca?, which are 

 crowded together (width 2 — 3 m.m.) subglobose-difformate, 

 base inflexed, many fruited, lacunose-unequal, often albo- 

 farinaceous, then constantly sterile ; ostiola minute j 



K hymenium colourless, paraphyses very slender, capillary, 

 flocculose-ramulose. Spores in elongate-cylindrical asci, 8, 

 uniseriate, sometimes at both ends truncate, 3-limbate, central 

 stratum thick, ellipsoid, lutescent, grumous, "085 x '034 

 m.m. 



Hab. — On rocks, Mt. Perry and Brisbane valley. 



C. Knight, Trans. Lin. Soc, Dec. 1882. 



*** Pustulate — (a). Flavescentes. 



Yerruca? hemispherical, apices not depressed, ostiola broad, 

 widely confluent, subemergent. 



P. pustulata, Duby. 



Thallus yellowish or grey or greyish-olive, smooth, thin, 

 effuse, continuous or rimose Verruca? scattered. small r 

 convex, hemispherical ; ostiola dark-brown, punctiform, 



M confluent, aggregated, very slightly depressed ; spores gemi- 

 nate, colourless, ellipsoid, simple, resembling those of P. 

 thiospoda, costulate within, '095 x '038 m.m. 

 Hab — Toowoomba, on bark. 



. P. leiotera, Mull. Arg. 



Thallus virescenti-flavid, thin, continuous, with smooth 

 polished surfaces, at length obsoletely granulose-unequal ; 

 verruca? - 7 — 1 m.m. wide, commonly with transverse branch- 

 M lets distinctly longer than wide, others hemispherical with 

 truncate obtuse vertices, base gradually rising from the 

 thallus, pallid or fuscescent, 1 — 3 ostiolate ; ostioles some- 

 what confluent and rimiform ; spores 2, *11 x '035 m.m., 

 within costulate. Nearly agreeing with P. melaleuca, but 

 thallus intensely flavicant, with verruca? strikingly smooth, 



