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 Add this item to the list   CERRENA UNICOLOR (Fr.) Murr.
   
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Page number:281 
Remarks (public):The species can be separated from C. meyenii by its more white to grey pore layer, distinctly more labyrinthine than in C. meyenii, a white context and a persistent tomentum. The spores are also wider than those of C. meyenii. 
Description type:Non-original description 
Description: CERRENA UNICOLOR (Fr.) Murr.
J. Mycol. 9:91, 1903 - Daedalea unicolor Fr. Syst. Mycol. 1:336, 1821.
For a description of its cultural characteristics, see Westhuizen in Can. J. Bot. 41:1487-99, 1963.
FRUITBODY perennial, pileate, dimidiate, effused reflexed to resupinate, often imbricate with many reflexed pilei from a common effused base, 7 x 10 x 0,5 cm or even larger in fused clusters, tough to corky. PILEUS flat, densely tomentose to hirsute, concentrically zoned in shades from white at the margin to greyish or even light brown towards the base, often with shades of green due to algae, at the base also often overgrown by mosses, margin acute and slightly lobed. PORE SURFACE white to light cinerous or smoky, pores elongated to sinuous, partly split to labyrinthine, or even deeply split into flattened teeth, first 2-3 per mm, measured tangentially, in old specimens even larger, tubes concolorous with hymenophore, up to 5 mm long. CONTEXT white and thin, up to 2 mm thick, separated from the tomentum on the pileus by thin, very distinct black zone.
HYPHAL SYSTEM trimitic, generative hyphae with clamps, in the hymenium and trama delicately thin-walled and narrow, 1.5-3 µm in diameter, in the context and tomentum thick-walled to almost solid and wider, up to 8 µm in diameter with large clamps. Binding hyphae mostly rare and confined to the context, thick-walled to solid, hyaline and with relatively short branches, 2.5 - 5 µm in diameter, skeletal hyphae hyaline, thick-walled to solid, dominating in the fruitbody, 2.5-8 µm in diameter, thinner in the hymenium and trama than in the context and tomentum. SPORES ellipsoid, hyaline, thin-walled, smooth and non-amyloid, 4.5-6.5 x 33.5 µm.
HABITAT. On deciduous wood, mostly on stumps and standing dead trunks, more rarely on fallen trees and branches. On all sorts of trees. DISTRIBUTION. In Africa only seen from Tanzania, Mt. Mere, 3400 m a. sol. Circumpolar in the temperate zone.

 
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