152 Proceedings of the Ro//al Societfj of Victoria. 



Hab. on sub-Alpine rocks and moss, Mt. Maoedon. 

 Previously named by me (Trans. Lin. Soe. 1890) aS*. micro- 

 cocca, Born, et Nyl. 



Genus 2.— Collema, Ach. Nyl. 



Thallus very various, granula gonima moniliform, no 

 distinct cortical layer. Apothecia ruf'escent, usually leca- 

 norine ; hyjjothecium distinctl}^ cellulose; spores eight, 

 colourless, commonly multilocular, rarel}' simple. 



Sub-Genus 1. — Collema, Spores eUlptioid. 



1 . G. Iceve, Ta3dor. 



Thallus olivaceous, under surface paler or cinerascent, 

 smooth, rotundo lobate, undulate. Apothecia rufous or 

 fusco-rufous, plane, at length convex, with a thin entire 

 thalline margin. Spores fusiformi ellij)soid, -013 X '004 mm., 

 o to 5 septate, and also longitudinally divided. Granula 

 gonima moniliform. Gel. hym. blue with iodine. 



Hab. among mosses on gi-anitic rocks, M'Crae's Island. 

 Rep. Gov. Bot. 1854. Traawool, Beaconslield. 



Previously named liy me (Trans. Lin. Soc. 1890) Leptogimn 

 olivaceum, Wilson. 



Form gvanulatiLin, Wilson. — Thallus olivaceous or fusco- 

 olivaceous, here and there plumbeous : beneath paler, firm, 

 moderate (one inch wide), smooth, very often near centre or 

 wholly obscurely granulate. 



Hab. on bark of trees, Wan-nainbool, Gipp.sland, Kew. 



¥ovn\ Jimbriatum, Wilson.— Thallus crisped at circumfer- 

 ence, and isidioso fringed. Sterile. 



Hab. on bark of trees, Warrnambool. 



Form IskUosum, Wilson.— Thallus plumbeo coerulescent, 

 here and there olivaceous, membranaceous, thin, plicato 

 undulate, more or less covered with ccesious or obscurely 

 plumbeous isidia. 



Hab. on bark of trees, Warrnambool, Gippsland. 



2. 0. plumheum, Wilson. 



l^hallus plumbeous, small, complicate, membranaceous, 

 rotundo-lobate, lobes undulate. Apothecia minute, often 

 ciowded, rufous bi'own, sessile, plane, thalline margin entire. 



