THE VICTOKIAN NATURALIST, 67 



between the fibres of the timber, scarcely ever rising above 

 the thallus, breadth up to -5 mm. Sporal mass black. Spores 

 fusco-nigricant, conglutinated in glomerules, ellipsoid, about 

 •005 mm. long, '003 mm. mm. broad, but Very various in size, 

 uniseptate, with locule in each cell. Gonidia "02 mm., oblongo- 

 spherical. Habitat on decaying eucalyptus rails in sub-alpine 

 localities. Found also on Mt. Lofty, S.A. 



29. Trachylia exigna. Wilson, spec. nov. 



Thallus cinerascent, effuse. Apothecia partly sunk in the 

 thallus, small, very slightly elevated, disk plane or convex. 

 Spores fusiforrai-ellipsoid, nigrescent, uniseptate, about '008 mm. 

 long, •003 mm. broad. Habitat on old eucalyptus rails. 



30. Trachylia Vicforiana. Wilson, spec. nov. 



Thallus cinerascent, thin, effuse. Apothecia typically sessile, 

 often briefly stipitate, black, disk often sulphureo-pruinose, 

 breadth to -4 mm. Spores fuscous, oblongo-ellipsoid (•oo5-"oo6 

 mm.) or nigricant, ellipsoid, narrower at apices and rather smaller, 

 uniseptate, with paler loculi in each cell. The fuscous colour is 

 owing, as usual, to a coat, which comes off under rough usage, 

 leaving the spore nigricant. I find it difficult to decide whether 

 this is a Trachylia or a Caliciuin (to be called perciirhim), or 

 whether these are both constantly associated, with similar spores. 

 Very common on old eucalyptus rails in many parts of Victoria. 



31. Bceomyces fusco-carnea. Wilson, spec. nov. 



Thallus 2 to 3 in. in diameter, pallid, grannulose, gran- 

 nules sometimes depressed. Apothecia fusco-carneous, pruinose 

 (1-2 mm. broad), convex, margined by the hypothecium ; 

 stipes white, nude ; short or subsessile, i mm. or less in height. 

 Thallus and apothecia when touched with hydrate of potash shew 

 yellow and then deep blood-red, which is permanent. Habitat on 

 clay. This species is allied to B. Rufus. 



32. Cladonia catiosa. Flk. ; var. diffissa, Wilson 



Thallus of squamge light green, muiute, crenate, curled up, 

 displaying the white under surface. Podetia squamulose, split 

 at the apex into several branches, which, with the rest of the 

 podetia lose the cortex here and there and show the filamentous 

 substance underneath costate and eroso-cancellato. Sometimes 

 the whole podetium is split up into a sort of network. Apothe- 

 cium of paler or darker rufous, on each branch of podetium. 

 Habitat on earth or decaying tree stumps. Allied, perhaps, 

 too closely to C. cariosa, of which it may possibly be a form. 

 The chemical reaction is uncertain, generally K 4- C - . 



33. Cladonia hastata. Wilson, spec. nov. 



Squamae at foot of podetia small, evanescent. Podetia brown, 

 verruculose, smooth, somewhat shining, sparingly divided at base, 

 rarely above, slender, fragile, erect, scarcely curved, rising to 



