100 FUNGUS-FLORA. 



Corticium sulphureum, Berk., Outl., p. 274 ; Cke., Hdbk., n. 

 929 ; Stev., Brit. Fung. ii. 276. 



On wood, bark, and leaves. Often broadly effused, the 

 hymenium is not usually perfect, being spongy, bright 

 coloured, and barren, or with only patches here and there 

 producing basidia. 



Var. ochroidea. Berk. 



Hymenium ochraceous; spores elliptical with a minute 

 apiculus at the base, olive, 16-18 x 9-10 /*. 



Coniophora sulphured, var. ochroidea, Mass., Mon. Thel., 

 p. 133. 



On wood and bark. In general structure and habit the 

 variety agrees with the typical form, differing in the ochra- 

 ceous tint of the hymenium and the larger elliptical spores. 

 May possibly prove to be a distinct species. 



Coniophora ochracea. Mass. 



Very broadly effused, submembranaceous, usually indeter- 

 minate ; hymenium pulverulent, whitish then ochraceous ; 

 spores yellowish, subglobose, 8 x 6-7 p.. 



Coniophora ochracea, Mass., Mon. Thel., p. 137. 



Spreading continuously as a thin inseparable film over the 

 inside of elm-bark which had become partly detached from 

 the fallen trunk. In its most highly developed condition 

 presenting some resemblance to Coniophora sulphurea, from 

 which it is distinguished by the smaller subglobose spores, 

 and indeterminate margin. The subhymenial hyphae are 

 very thick, measuring up to 18 p. in diameter, and are pale 

 yellow. 



Coniophora subdealbata. Mass. 



Effused, determinate, thin; hymenium ochraceous olive, 

 pulverulent at maturity; spores elliptical with a minute 

 basal apiculus, ochraceous, 11-12 x 7-8 p.. 



Coniophora subdealbata, Mass., Mon. Thel., p. 135. 



Corticium subdealbatum, B. & Br., Grev. 



On bark and wood. Thin, often broadly effused, ochra- 

 ceous-olive, hymenium pulverulent, often with paler barren 

 patches. 



Coniophora pulverulenta. Mass. 

 Broadly effused, margin thin, byssoid, whitish; hyme- 



