BY JOHN 8H1RLEY, B.SC. 



109 



K " Greatly resembles A. Fremontii, Tuck, but more remotely 

 branched and quite terete, similar in colour and in length of 

 fronds." C. K. in F. M. Bailey's paper, Proc. Roy. Soc. 

 Qd. I. 



Hah. — Nerang Creek, Mt. Mistake, and Enoggera, on 

 stems of trees. 



u be IX. — Cetrariei, NyJ % 



Thallus compressed, rarely terete, variously shrubby or 

 foliaceous or frondose, membranaceous, dilatate or lobate, 

 epithallus somewhat shining, internally filled with a white 

 woolly medulla, Apothecia marginal with a thalline border. 

 Spores 8, small, colourless, simple. Paraphyses indistinct. 

 Spermagonia marginal in bristle-like points, or black 

 papillfe. 



I. — Platysma, Hfm. 



Thallus various in colour, nigrescent, rigid, shrubby or 

 dilated, lobed or prostrate, erect or ascending, laciniate, 

 rarely fistular ; apothecia marginal or sub-marginal, reddish- 

 brown or dark ; spores small, simple. Spermatia minutely 

 papillate or tuberculate. Spermatia incrassate at both the 

 obtuse apices, or fusiform-incrassate at one apex, or 

 fusiform-ellipsoid. 



1. P. glaucum (Z) (medulla K + C — ) 



The plant so named in F. M. B's herbarium is an 

 exceedingly doubtful specimen ; the following is Leighton's 

 description : — 



Ivory-white or glaucescent or pallescent, smooth or 

 slightly lacunoso- rugulose, laciniate or laciniate-lobate, 

 lacinia? ascending, margins sinuate, or crenate, or lacerate, 

 L or sorediate, or minutely dissecto-timbriate ; beneath rugose, 

 fusco-nigrescent or fuscous or pallescent or entirely albicant. 



