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Page number:585 
Remarks (public):Scytinostroma is morphologically very close to Vararia, differing in the presence of distinct and numerous dichohyphae in Vararia, which gives a looser consistency to the Basidiome, but frequently it is not difficult to find some intermediate forms, as in Vararia maremmana where dichohyphae are not very differentiated and the basidiome presents a tough texture. Several studies (Larsson & Larsson 2003, Larsson et al. 2004, Binder et al. 2005, Larsson 2007b) include Scytinostroma close to other russuloid members in the family Peniophoraceae Lotsy. Phylogenetic data seem to indicate that dextrinoid hyphae do not define a monophyletic group. 
Description type:Non-original description 
Description:Scytinostroma Donk, Fungus, Wageningen 26: 19, 1956.
Type species: Corticium portentosum Berk. & M.A. Curtis, Grevillea 2(13): 3, 1873.
Basidiome resupinate, effused, adnate, coriaceous, hymenophore smooth to tuberculate, usually cream to ochraceous coloured. Hyphal system dimitic; generative hyphae with clamps or simple septa, thin-walled, skeletal hyphae densely branched and sometimes forming dendrohyphae or dichohyphae, narrow and thick-walled, strongly dextrinoid and cyanophilous. Cystidia (gloeocystidia) present in most species, SA+ or SA?, frequently with apical schizopapillae. Basidia tubular to utriform, with 4-sterigmata, basally clamped or simple-septate. Basidiospores subglobose to ellipsoid, smooth, variably amyloid.
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