BY EEV. F. R. M. WILSON. 141 



•004 mm. Paraplijses slender, not articulate. Granula 

 gonima moniliform or sometimes conglomerated in fours in 

 gelatinous sac. 



Hab. on mosses on sub-alpine rocks, summit of Mount Wel- 

 lington. Type, with 4 locules in the spore, occurs at summit 

 of Mount Macedon, Victoria. 



6. Leptogium, Ach. 



Thallus very various, thin. Granula gonima moniliform. 

 Cortical layer aagulaii-cellulose, distinct. Apothecia leca- 

 norine or sub-biatoriue. Spores 8, colourless, ellipsoid, 

 variously divided. 



1. L. tremelloides, L., plumbeo glancescent or plumbeo 

 olivaceous, thin, membranaceous, smooth, lobate, imbricated 

 and crisped. Apothecia rufous or rufescent, elevated, concave 

 or plane, with margin thick, entire, elevated, lead coloured. 

 Spores ellipsoid, acuminate at apices, "016 x '006 mm., 3 to 

 5 septate and longitudinally divided. 



Hab. on trees and rocks in shady places, Cbeshunt, Archer. 

 Hook. Fl. Tasm.; Krplh.; Mount Wellington (and Weymouth), 

 Mount Arthur, St. Mary's Pass. 



2. L. tasmanicum, Wilson, small, plumbeous or fusco 

 rufous, very thin, membranaceous, smooth, rotundo lobate, 

 lobes imbricate, crowded, sub-ascending in centre, sinuate, 

 undulate and crenate, often dentato fimbriate, or sometimes 

 revolute downwards. Apothecia large compared with the 

 thallus (1 to 2 mm. or more broad), rufous, thalline margin, 

 often dentato crenulate. Spores fusiformi ellipsoid, 3 septate, 

 with longitudinal divisions, '02 x "01 mm. 



Hab. on mossy earth. Brown's Eiver. 



3. L. Vidorianum, Wilson, obscurely plumbeous, beneath 

 sub-cinerascent, large, rotundo lobate, lobes undulate, firm, 

 thickish, confusedly rugulose, Apothecia moderate, rufous, 

 thalline margin thickish or plicate or granulate or laciniolate. 

 Spores ovoideo fusiform, acuminate at apices, 3 septate, with 

 central locules longitudinally divided, "013 to -017 x '005 to 

 •006 mm. 



Hab. among mosses on trees, Mount Wellington, Weymouth, 



Family 2. Myeiangiace^. 



Thallus black, noduloso pulvinate, cellulose, unstratified. 

 Apothecia sub-lecanorine, sphseroideo cellulose. Spores 8, 

 colourless, oblong, irregularly septate, or almost murali 

 divided. 



