BY JOHN SHIRLEY, B.6C. 



141 



and in form and colour diverse. Lich. Beit, von Dr. J. 



Muller, XIX. 10- 



Hab. — Rockhampton, on bark. 



7. P. lutescens, Krph. 



Thallus lutescent, bordered by a fine obscure line ; verruca? 

 M numerous, small, crowded and often confluent ; ostiola 

 punctiform, black, 2 — 4 in each verruca. Spores 2, -08 — 

 •132 x *036 — '066 m.m. ; endospore transversely plicate, 

 often in the middle longitudinally fissured. 



Hab. — Rockhampton. 



(b). Albida?. 



S. P. sorediata, C. K. 



Thallus white or grey, at times with faint greenish tinge, 

 seldom more than 4 m.m. thick, with surface closely and 

 evenly rimose-arerlate. Verruca? hemispherical, to 1*5 

 m.m., with sorediferous summits, showing a coarsely granular 

 formation. Sterile. 



K Hub. — In patches frequently 3 — 4 ft. wide, on rocks, near 

 Brisbane. 



*%* Depressse. 

 Fruit bearing verrucas hemispherical, with apex at length 

 depresso-concave, in the depression crowd edly or sub- 

 confluentlv ostioligerous. 



Albidaa. 



9. P. melaleuca, Duby. 



Thallus yellowish cream colour, thin, membranaceous, sub- 

 determinate, smoothish ; verruca? scattered, hemispherico- 

 depressed, irregular, polycarpous ; ostiola brownish-black, 

 pseudo-disciform, depressed, thalline margin lacerate ; spores 

 M 2, colourless, ellipsoid, simple, "045 — -08 m.m. long, 



This plant normally in parts or wholly pallido-flavescent, by 

 decortication changes to white, and falls away like farina. 

 Lich. Beit, v. Dr. J. M., XIX. 11. 

 Hab. — On bark, near Rockhampton. 



