BY JOHN SHIRLEY, B.SC. 



23 



v. sorediat i Mutll. 



Thallus thin, rigid, pale red-brown when, dried ; smooth 

 above, sorediferous at tlie margins, and with the apothecia 

 undergoing soredioid decay. Lobes linear, blunt, with 

 few shapeless or rounded, lateral or marginal lobules ; 

 beneath covered with dark-brown short tonientum, among 

 which lie numerous, small, ( 2 — 25 m.m ) very pale 

 M. citrine pseudocyphelhe, Apothecia 1 — 1*5 m.m. ; disk 

 dark red almost black, concave ; margin concolorous with 

 upper surface, sub-crenulate ; spores variable, normally 

 1- septate, bi-fusiform or ovate-oblong or pyriform, -007 

 — 015 x 002— 004 m.m. 



If ah — Toowoomba. 



Cyphelke true (thelotremoid or urceolate) thallus 

 not stipitate. 



9. S. quercizans, Ach, 



Thallus thinly membranaceous or sub-rigescent, smooth, 

 di-trichotomously branching, lacinhe differing little in 

 width, abruptly terminating in blunt lacinulse, light red- 

 brown above, dark brown and toinentose beneath, with 

 white cyphelhe. Apothecia often submarginal, 2 — 3 m.m., 

 Sn. similar in colour to the frond, often suffering from soredi- 

 ferous decay; spores 8, 1-seriate, 1-septate, colourless, 

 without granular contents, narrowly elliptical or fusiform, 

 •025— -033 x -008— -009 m.m. 



Ilab. — On tree trunks, Main Range. 



*b/y/?. — S. cinchomv Del., S. lurida Mey. et FloU 



10. S. lutescens TayU 



Thallus G — 8in., stiff, orbicular, smoothish, yellow-green, a 

 little greener when moistened, shining, lobed almost to the 

 centre, the margins sinuate-crenate, elevate, with crowded 

 Sn. lac.nise whose duskier olive centre contrasts with the green 

 tawny surface of the thallus, and is granular -pulvescent. Apo- 

 thecia few, at length convex, disk reddish, margin entire ; 

 spores G — 8, fusiform, triseptate, colourless, *0o8 — 041 x 

 •007— -008 m.m. 



