CLASSIFICATION 411 



Running over the ground, twigs, moss, etc. Distinguished by 

 the dark colour of the hymenium and the white margin. 



CONIOPHORA 



Broadly effused, thin, adnate, margin often indeterminate or 

 imperfectly defined ; hymenium smooth, powdered with the 

 coloured spores at maturity. 



The species form large patches on dead wood and bark. Substance 

 very thin, and everywhere closely attached to the wood. The 

 hymenium or uppermost exposed surface is perfectly smooth, that 

 is, not furnished with minute hairs or cystidia, as in the allied genera 

 HymenochcBte and Peniophora. Distinguished from Corticium by the 

 coloured spores. Most of the species are of a dull yellowish brown 

 colour with a paler, radiating, growing margin. The hymenium is 

 often uneven, owing to its substance being so thin, and following 

 the inequalities of the substance it is growing upon. 



C. olivacea. — Thin, wide-spreading, dull yellowish olive, and 

 glistening with minute particles of oxalate of lime, margin paler, 

 becoming cracked. 



On dead pine trunks, often widely effused, and covering nearly 

 the whole of the surface of fallen trunks. Must be carefuhy dis- 

 tinguished from Peniophora olivacea, which has a minutely setulose 

 or bristly surface. 



C. arida (PI. XXXIII, fig. 7). — Very thin, broadly effused, dingy 

 sulphur-yellow, then ochraceous, finally brownish and powdery, 

 margin, when growing, surrounded by a broad white or yellow- 

 tinged zone of radiating mycelium. 



C. sulphurea. — Broadly effused, rather thick, almost waxy, 

 brownish yellow, margin bright sulphur-yellow, fibrillose, and 

 running out in radiating, cord-like strands. 



Running over bark, wood, leaves, etc. The hymenium is often 

 sterile, and is then clear sulphur-yellow. 



C. subdealhata. — Effused, thin, ochraceous olive, powdery, margin 

 determinate or well defined. 



Bnmdly effused on the inner side of bark. 



C. umbrina. — Effused, soft and fleshy at first, tuberculose, 

 contracting irregularly during drying, rusty umber, margin radiat- 

 ing villose, umber. 



Encrusting wood, branches, twigs, etc., also growing on the 

 ground. 



C. piilvcrulenta. — Broadly effused, thin, rusty ]:)rown, powdery, 

 margin thin, byssoid or radiating, whitish. 



Distinguished by the rusty brown or dark brown, powdery 

 hymenium and the whitish margin. 



On dead wood. 



