82 



THE LICHEN FLORA OF QUEENSLAND 



1. S. Stirtoni, Shirley. 



Thallus black or brown-black, wide spread, minutely 

 coralloid-compact, forming more or less raised heaps 

 (width to about 3 m.m.), consisting of irregularly branched 

 tomentose- intricate filaments '02 — 03 m.m. in thickness : 

 sheath of filaments wholly hyaline, not cellulose ; gonimia 

 Sy. la r ge, dull violet or sordid, 1 — i lying transversely in the 

 filaments. The violaceous colour of the gonimia is changed 

 by K to a greenish yellow. 



"This plant, which has close affinities to Sirosiphon, has 

 puzzled me much, and in the absence of fructification, lias 

 been placed here only provisionly." 

 Dr. Stirton in Proc. Koy. Soc. Vic, Sept. 1880. 

 Si/n. — S. pulvinatus, Stirton which must lapse since P. F. 

 Reinsch in Jour. Lin. Soc. Dot., Vol. XVI., No. 1)2, p. 

 236, 1887, describes S. pulvinatus, Kntzing. 

 J[ah. — Parasitic upon the thallus and apothecia of Lecidea 

 ' foliata, Stirton. 



Family II.— Collemacei, Nyl. 



Thallus various, black, luscous-black, olive green, fusco- 

 cinere;cent, &c. ; firm and fruticulose, or crustaceous, 

 granulose or lobate, laciniate or microphylline ; gonimia 

 cterulescent or glaucous-green, moniliform or variously dis- 

 persed. Apothecia terminal in globose thalline receptacles, 

 or sessile ; lecanorine or biatorine, or endocarpoid. Spores 

 simple or variously divided.* 



Tribe I. — Collemei, Nyl. 



Thallus very various, crustaceous, granulose or lobate, 

 laciniate or microphylline ; gonimia glaucous green either 

 moniliform or variously dispersed. Apothecia lecanorine or 

 endocarpoid. (Leighton's Lich. Fl. Gt. Britain, p. 14 .) 



I. — Co 1. 1. em a, Ach. 



Thallus folaceous or filamentous, witli no distinct cortical 

 layer : when nvust flaccid, turgescent, or pulpose-gelatin- 

 ous ; wlien dry, membranaceous, coriaceous, or coriaceous- 



