132 THE LICHEN FLORA OF QUEENSLAND, 



8. L. atra, Huds. 



Thallus thin, white, cracked into small it regular plates, 

 determinate, bordered by a broad, distinct, black hypothalline 

 zone ; apothecia to 1-6 m.m. in diameter, sometimes two or 

 K three united into one ; disk dull black, oval or circular or 

 irregular, within black ; margin white, elevate, thin above, 

 entire, flexuose ; spores ellipsoid, rarely slightly curved, 

 grumous or pellucid, -006 — '01 x -003 — -004 m.m. ; hypothe- 

 cium in upper part cerasine-fuscous, spermagonia black, 

 conoid or papilliform, arthrosterigmata 05 m m. long ; sper- 

 matia straight ; stylospores coloured. 



Hob. — On rocks, Helidon. 



Sy. v. virens, Mull. Arg. — On bark, Mt. Perry, 

 v. immarginata, C. K 



Thallus white, tuberculosa Apothecia black, innate, flat, 

 naked ; hymenium violet-l>lack, thick, rising from the thallus 

 and with attenuated circumference ; no proper excipulum ; 

 K. spores -009 x -0075, oval-ellipsoid, colourless, double-walled. 

 Distinguished from forms of L. subfusca by the apothecia 

 being black ab initio. 



JJ'ib. — On trunks of trees, Mt. Perry. 



Dr. Knight in Syn. Queen. Fl. 2nd Sup. 



9. L. pinguis Tuck. 



Thallus thinly crustaceous, lough and granular, whitish or 

 cinerascent or ashy-green. Apothecia small, numerous, 

 crowded, '25 — *35 m m., at first showing only the white 

 marginal ring, then revealing the reddish-brown or fleshy- 

 L. brown disk ; margin finely crenulate ; thecse clavate-cylin- 

 drical, 8-spored, contents 1-seriate ; spores simple, pellucid, 

 • 000 — 008 x -002 — 004 m.m. : paraphyses not separating. 



Hab. — Unrecorded. 



10. L. Queen«landias C. K. 



Thallus sordid white or dull flavescent, granular in small 

 rounded granules, resembling the verrucas of a Pertusaria» 



