BY JOHN SHIRLEY, B SC. 7 



Syn. — P. adepta. Cromb. 



Hab. — On small branches near Brisbane, also at Bahia. 



4. P, dermutata, Stirton. (C +, reddish abore, yellow below.) 



Thallus pallid or pallul-glaucescent, smooth, lobate-dirided : 

 beneath black, circumference pallid spadiceous, sparingly 

 rhizinose : medulla upper part white (C lightly erythrinose) 

 Sn. lower part lightly rlavescent (C yellowish). Apothecia 

 unknown. 



Hab. — On small branches near Brisbane. 



Scottish Naturalist, April, 1878. 



** Medulla white : margins lacerate-d's^ect or isidiose- 

 dentate. 



■5. P. laceratula, Nyh 



Thallus white or albo-glauce?cent, thin, membranaceous, 

 generally of medium size (1 — 3 in.), rough or somewhat 

 shining, lobate- laciniate, margin crenate or crenate-incised, 

 or often for the greater part lacerate-dissect, or more 

 M. generally isidiose-dentate ; beneath white and sparsely fur- 

 nished with few longish rhizinse. Apothecia badio-testaceous 

 or badio-pallid, mediocre (2*5 — 3*5 m.m.), receptacle sub- 

 pedicellate : margin thin, entire or sub-entire ; spores 

 •012— -013 x -007— -01 m.m. Theeae broadly ovoid. 

 Spermagonia immersed, showing as black points : spermatia 

 acicular-cylindrical 01 — -012 x -001 m.m. 



Hab. — Brisbane and Burnett Rivers. 



Nyl. Syn. Lich. pp. 390—1. Vol. I. 



6. P. cyathina, Stirton, 



Thallus pallid or pallid-cinerascent, here and there obscurely 

 glaucescent, smooth,'\vide spread, lobate-laciniate, lacinias 

 crenate-incise 1 or frequently lacerate-dissect or irregularly 

 toothed (K yellowish) ; beneath black and black-rhizinose ; 

 medulla white (K — , when C added then lightly and 

 obscurely red, but C alone — ) ; apothecia fusco-rufescent 

 or badio-fuscous, for the most part large, 3 — 20 m.m. ; 



