BY JOHN SHIRLEY, B.S 



17 



africana Stirton. Also referred to P. litnbata by Dr. 

 Knight. 



Hab.— Mt. Mistake and Glasshouse Mts. 



P. insinuata Syl. 



Thallus spreading from the centre, orbicular. s!iin;ri£, blue- 

 grey above, beneath black with nigrescent rhizina? : primary 

 lacinia? 1*5 — 2 5 m.m. wide, determinate, but with margins in 

 contact and sub-fused : lacinia? elongate with convex lacinulae 

 and convolute dilated apices, which are plane, thick, sinuate, 

 not ascending. Spermagonia as red-brown dots, immersed, 

 crowded at the extremities. Apothecia medial or sub- 

 medial, raisfd, 1*5 — -5 m.m.. young ones bordered by radiat- 

 ing fibrils : disk nddish, concave : margin pale, raised, 

 crenate, innexed : paraphyses short and agglutinating ; 

 spores in clavate asci, small, spherical or shortly oval, very 

 often containing a drop of oil, '007 m.m. 



Syn. — P. spha?rospora C. K.. P. liml ata v. minor C. K. 

 Published by Dr. Knight as P. spha?rospora in Lich. X. S. 

 Wales, Trans. Linn. Soc, Dec. 1882, a name already 

 applied by Xylander to a different lichen : Xyl. Syn. Lich. 

 p. 376, VoL I. Authority i«t synonyms given in letter from 

 Dr. K. to F. M. B. 



Bab. — Mt. Perry, Glasshouse Mts. 



(c). Olivacea?. 



P. olivacea. Z. (K — C — ) 



Thallus membranaceous or chartaceous, orbicular or sub- 

 orbicular, deep olive-brown, rugulose, minutely corrugate, 

 sometimes furfuraceous or granulate-farinose ; similar colour 

 or paler below, with sooty specks and black patches : divi- 

 sions contiguous, appressed, lobes plicate rotundate-lobulate ; 

 medulla white. Apothecia concolorous or chestnut coloured, 

 disk plane : margin entire or sub-entire. Thecae short, 

 small, ovoid, 8-spored ; spores roundish, colourless, doulle- 

 walled, -011— 019 x -007 — *00l m.m. ; paraphyses slender. 

 Spermatia acicular, *007 m.m. long. 



