3 



THE LICHEN FLORA OF QUEENSLAND, 



Sn. receptacle sub-pedicellate, rugulose, and foveolate-impressed, 

 margin often lobulate and base sulcate ; spores 8, ellipsoid, 

 often gibbous, epispore incrassate, -028 — "038 x "016 x -02" 

 m.m. ; hym. gel. with iodine cierulescent, particularly the 

 theca?. Spermagonia innate, black without ; spermatia 

 cylindrical, often curved 005— -006 x -0009— -0011 m.m. 

 Near P. nilgherriensis, A ? ?//., and P. macrocarpa, Pers. 



Dr. Stirton, Scott. Nat., April, 1878. 



Probably a variety of P. laceratula, Nyl. 



Hah, — On bark near Brisbane. 



*** Medulla white — tliallus reticulate-rugulose. 



7 . P. saxatilis, L. 



Tliallus grey, orbicular, deeply Iobed and sinuate, having 

 from its small lobation a squamulose aspect. Lobes short, 

 small, membranaceo-sinuate, closely appressed to the black 

 hypothallus, free at the margins, ending in a few laciniae 

 with rounded tips. Upper surface from glaucous to dull 

 K buff to grey, rough with pits an 1 reticulated powdery lines 

 or isidiose-seabrous. Under surface black, sparingly rhizi- 

 nose. From the hypothallus a black tomentum shows 

 between the lobes. Apothecia spaliceo-badious or fuscous ; 

 margins thin, entire or crenulate, sometimes confluent, 

 5 — 8 m.m. in diameter. Spores 8, colourless, ovoid or 

 ellipsoid, simple, -1)1") — -025 x '009 — "012 m.m. pale yellow 

 with I., double walled. 



Hab. — Mt. Mistake, on the bark of living trees. 

 J J Medulla white — Spores pertusarioid. 



8. P. latissima, Fee. 



Tliallus drying a yellow grey, beneath black, margins black- 

 tibrillosp, upper surface smooth : intricately lacinate-lobate ; 

 lacinise seldom longer than 1 in. or more than 6 m.m. broad, 

 rapidly dividing into rounded or toothed, marginal and 

 terminal lacinnlas. Apothecia 3 — 5 m.m. wide, at first 

 K urceolat', afterwards expanding and with a fractured or 

 toothed thalline margin. Sp< res ovate or oblong-ovate,. 



