46 THE LICHEN FLORA OF QUEENSLAND, 



less narrowly laciniate, lacinise often sub-imbricate, slender 

 and crowded, and margin frequently sorediferous, surface 

 reticulate-rugulose, beneath for the most part thickly lhizinose. 

 M. Apothecia lecideine, flat, superficial, resting on white or 

 dull strata ; spores bilocular, -018— -02 x -008 — -009 m.m. ; 

 paraph yses rather slender, irregular, not easily separating. 

 Syl Syn. Lich. p. 3, Vol. IT. 



4. P. obscurior, Stirton. (Proc. Roy. Soc. Vic. Sept. 1880.) 

 Sn. Syn. — Lecidea rhypoderma, C K., for which see Part III. 

 Hab. — On bark, near Brisbane and at Fassifern. 



Series V. — Placodiei, Nyl. 



Thallus crustaceous, scaly, granular, powdery or evanescent. 

 Apothecia with or without a thalline border, sometimes 

 lirelliform. Spermagonia with arthrosterigmata or simple 

 sterigmata ; spermatia various. 



Trikk XV. — Lccanorei, NyJ. 



Thallus various. Apothecia with a thalline border (lecano- 

 rine), or rarely without (biatorine). Spores various. 



Sub-trIhe. I. — Psoromei, Nyl. 



Tliallus variously coloured, lobate-stellate, laciniate-squa- 

 mose or squamulose ; true gonidia, distinct, large. Apo- 

 thecia lecanorine, margin crenate or crenulate, spores 8, 

 colourless, large, ellipsoid, simple ; paraphyses distinct. 

 Sterigmata pluri-articulate ; spermatia shortly cylindrical 

 witli somewhat incrassate apices. 



I. — Psoroma, Fr. 



Thallus resembling that of Pannaria but with true gonidia, 

 squamulose, cellulose. Apothecia lecanorine. margin crenate. 

 Spores 8, colourless, large, ellipsoid simple. Paraphy a es distinct, 

 sterigmata pluri-articulate. 



1. P. sphinctrinum, Nyl. 



Thallus a lurid reddish-brown or lurid cervme, stellately- 

 laciniate, lacinia? sub-linear and inciso-multifid, granular and 



