COXIOPHOBA. 99 



from this primitive condition, as usually first indicated by 

 the margin becoming free and more or less elevated. 



Coniophora olivacea. Mass. (figs. 1-3, p. 94.) 



Membranaceous, inseparable, margin byssoid, whitish ; 

 hymeninm olive, glistening with crystals, pulverulent, some- 

 times cracked ; spores elliptical, ochraceous-olive, 14-17 X 

 10-12 p. 



Coniophora olivacea, Mass., Mon. Thel., p. 129. 



Corticeum olivaceum, Stev., Brit. Fung. ii. p. 283. 



On decaying pine-trunks. Broadly effused, often covering 

 nearly the whole surface of fallen trunks. The glistening 

 appearance of the hymenium, due to minute crystals, is very- 

 evident in fresh specimens, but disappears on drying. Hy- 

 menium ochraceous-olive, or brownish when dry, sometimes 

 cracked ; margin pale, byssoid, or altogether indeterminate. 

 Superficially resembling Periophora olivacea, but distinguished 

 by coloured spores and absence of cystidia. 



Coniophora arida. Karst. 



Membranaceous, very thin, not removable from the matrix, 

 broadly effused, margin fibrillose whitish; hymenium con- 

 tinuous, even, dingy sulphur or ochraceous, pulverulent, 

 becoming brownish ; spores ellipsoid with a minute apiculus 

 at the base, ochraceous, 11-12 x 6-7 p. 



Coniophora arida, Mass., Mon. Thel., p. 132 ; Karst., Myc 

 Fenn., p. 319. 



Corticium aridum, Stev., Brit. Fung. ii. 282. 



On decaying pine- wood. Often broadly effused, entire 

 fungus closely adglutinated, dry and powdery when mature, 

 varying from almost clear sulphur-yellow to brownish-ochre, 

 becoming dusky when old and dry ; margin radiato-byssoid, 

 whitish. Spore measurements will distinguish the present 

 from closely allied species. 



Coniophora sulphurea. Mass. 



Broadly effused, margin bright sulphur-yellow, often fibril- 

 lose and running out in cord-like radiating strands ; hyme- 

 nium thick, compact, almost waxy, brownish with yellow 

 tinge, cracking when dry ; spores broadly elliptical, brownish- 

 yellow, 11-12 x 8-10 /A. 



Coniophora sulphurea, Mass., Mon. Thel., p. 132. 



H 2 



