BY EEV. F. R. M. WILSON. 139 



4. Pyrenopsis. Nyl. 

 Thallus crustaceous granuloso areolate, internallj rubri- 

 cose, laxly cellulose. G-ranula gonima agglomerated in 

 globular sacs. Apotbecia concolorous, minute, urceolate, 

 innate in a prominent marginal receptacle ; margin somewhat 

 swollen and counivent. Spores simple. 



1 P. Tasmanica, Nyl,, fuscous black, tbin, effuse, subtilely 

 rugulose above, diffracto glomerulose, glomerules equal. 

 Apotliecia many in each gloaierule, somewbat impressed, 

 often crowded. Spores ellipsoid or sub-globose, "004 to "005 

 X '0025 to -003 mm. No distinct parapbyses. Gel. bym. I. 

 cserulescent. 



Hab. on granite rocks, St. Patrick's River. Hook. L. J., Bot : 

 Nyl. 



5. CoLLEMA. Acb. Nyl. 



Tballus various, no distinct cortical layer. Granula gonima 

 moniliform. Apotbecia rufescent, with tballine margin. 

 Spores simple or variously septate. 



Sub-genus Collema. 

 Spores more or less ellipsoid. 



1. 0. -fiaccidum, Acb., dark green, opaque, membranaceous, 

 lobate, lobes large, expanded, fiexnose. Apotbecia plane, 

 rufescent. Sj)ores ovoid or broadly fusiformi oblong, '023 

 to -028 X -007 to -01 mm. 



Habitat on woodland rocks. Hook. L.J. Bot. ; on bark, 

 Cbeshunt, Archer, Hook. Fl. Tas. 



2. C. imvlicatum, Nyl. Not enumerated in Nyl. Syn. Metb. 

 Hab. by Derwent River, Broiun, Cr. 



3. G. I(Bve, Tayb, olivaceous, under surface paler or 

 cinerascent, smooth, rotundo lobate, undulate. Apotbecip^ 

 rufous or fusco rufous, plane, at length convex, with a thin 

 entire tballine margin. Spores fusiformi ellipsoid, '013 x 004 

 mm,, 3 to 5 septate, and also longitudinally divided. Granula 

 gonima moniliform. Gel. hym. I. blue. 



Hab. among mosses on rocks. S. Esk, Launceston ; Mount 

 Wellington, Weymouth. 



4. C . In Hooker's Fl. Tasm. Babington says :— "Mr. 



Archer has found at Cbeshunt a species of Collema different 

 from any of those described above, but has unluckily 

 preserved only one specimen. It is unknown to us and may 

 be new. The dull green tballus grows among mosses, hes 

 membranous rounded lobes, in a young state resembling 

 C.crisjpum, Scbaer. (0. cheilum, accordingtoNylander), butafter- 



