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Page number:105 
Remarks (internal):Sistotrema confluens is easily recognized by the pileate basidioma. In the genus Sistotrema, this species entirely differs from other species that produce resupinate basidiomata. Micromorphologically, however, the basidia and the hyphae of S. confluens are very similar to those of other species. 
Description type:Non-original description 
Description:Sistotrema confluens Fries, Syst. Mycol. 1: 426, 1821. (Fig. 72)
Distribution: Asia [Japan (Imazeki and Hongo, 1965)], Europe and North America.
Basidiomata pileate, 0.5-1.5 mm in width, flabellate with a laterally tapering stipe; the upper side of the pilei white to "Pale Luteous", gradually darkening toward the base of the stipe, smooth; underside of the pilei (hymenial surface) concolorous with the upper side of the pilei, variable in shape, usually reticulate, irpicoid or poroid; reticula or pores up to 1 mm in depth. In section subhyaline, membranous. Hyphal system monomitic; hyphae subhyaline, 2-6 µm in diam, smooth, thin-walled, nodose-septate, sometimes ampullate at the septa: cystidia lacking; basidia urniform, 12-20 x 4-4.5 µm (5.5-6.5 µm in width at the base). with a basal clamp, producing mostly 6 sterigmata; basidiospores narrowly ellipsoid to subcylindrical, 4.5-5 x2-2.5 µm, smooth, thin-walled, non-amyloid.
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