102 



THE LICHEN FLORA OF QUEENSLAND. 



9. R. exiguella, Stirton. 



Thallus white or pale straw-coloured, small, height to ^-in., 

 erect, stiff, fruticulose, angularly flattened, and longitudin- 

 ally sulcate, especially at the base ; above somewhat 

 rounded ; seldom divided or ramose, with pale bristle-like 

 Sn. ramules. Apothecia pallid, *5 — 1*5 m.m., terminal or sub- 

 terminal, with smooth receptacle, apices of the ramules 

 deflexed, seldom with nigricant appendages. Asci broadly 

 ovate ; spores 8, colourless, ellipsoid, sometimes gibbous, 

 1-septate, -01 — *013 x -007 m.m. Similar to R. melano- 

 thrix. 



Dr. S. Proc. Roy. Soc. Vic. Sep. 1887. 

 Hab. — On bark, New Farm, near Brisbane. 



10. R. pusilla, Le Preuv. 



Thallus yellow-white, short, fastigiate, subterete, inflated, 

 branches obtuse, smooth, somewhat polished, the central 

 parts waved and plicate, here and there perforated ; cortical 

 layer amorphous. 

 M Apothecia terminal, disk flesh-coloured, shading mto the 

 colour of the thalline margin, sub-pedicellate. Spores 

 ovate-oblong, seldom curved, 1-septate, pellucid, with iodine 

 pale yellow, -007— --009 x -0022— -003 m.m. 



Syn. — R. inflata, Hook tils. 



1 1 . R. perpusilla, Stirton, 



Thallus erect, small, ^ — 1 in., rusty brown, abruptly and 

 rapidly dichotomously branched to the fruiting extremities, 

 often stamped with lacuna?, and here and there pierced 

 JSn. with sub-terminal oblong openings. Apothecia dull red, 

 similarly coloured throughout, or in parts a trifle paler, 

 •8 — 1*5 m.m. in diameter, young forms peltate, older forms 

 scutellate, with sub-pedicellate receptacles. Spores 8, 

 colourless, oblong, straight or slightly curved, 1-septate,. 

 •012—015 x -004— -005 m.m. 



" Allied, if not similar, to R. minuscula," C.K. in litt. 

 F. M. B. 



Ihib. — On bark, Hocking's Nursery, Brisbane River. 



