THE LICHEN FLORA OF QUEENSLAND, 



ostiola at first irregular and closed, then almost circular and 

 K. aperient ; thecse monosporous ; spores hyaline, with iodine a 

 bright blue, -12 x -02 m m., oval-oblong or oblong-fusiform, 

 rounded and narrowing at both ends, densely parenchymatous; 

 paraphyses medium , aggregated : peridium black, entire. 



Rab. — Helidon, and 3-mile Scrub. 



Syn. — T. ^Ascidiura), profundum, ? 



V. — Leptotrema, Mull. Arg. 

 Spores parenchymatous as in Thelotrema, but brown. 



1. L. Wightii, Nyl 



Thallus crustaceous, continuous, uneven, thin, ca3sio-virescent 

 or cinereo-virescent, afterwards changing to cinereo-argillace • 

 ous, when moistened the surface presents minute, thickly 

 M. set, oblong, green granules, in fracture and beneath the 

 apothecia blood-red granules are observable. Apothecia 

 black ostiolate, from the ostiolum the nucleus issues as a 

 narrow scarious neck, the ostiola are surrounded by a circular 

 depressed ring of white thallus ; perithecium black ; nucleus 

 hyaline; spores '015 — -022 m.m. long, subglobose, irregu- 

 larly divided. 



Syn. — Endocarpon Wightii, Tayl. 



2. L. phaiosporum, Nyl. 



Thallus crustaceous, fulvescent, opaque, in sinuous convolu- 

 tions, surface minutely granulose. Ostiola laige, depressed, 

 Sn. fuscous, paler in centre, at length with aperient pore, thalline 

 margin radiate-striate ; spores 8, octolocular, loculi lenticular 

 with 3 — 4 cellules to each loculus ; paraphyses distinct, 

 with iodine not coloured. 

 Hob. — On bark, near Brisbane. 



3. L. albo-coronata, C. K. ( Shirley. J 



Thallus olive-green, shining, not continous, thin, folded 

 sparingly into thin longitudinal ridges, paler at their summits. 

 Apothecia crateriform, white, numerous, not confluent or 



