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Page number:95 
Remarks (internal):The form on Taxus deviates somewhat by having larger spores (9-12 µm) than the form of Juniperus (7-9 µm) and may probably be regarded as a variety.
Fries' description of Thelephora laevigata is vague and he states "tenuissima" and "subfarinacea" about the fruitbody of this not particularly thin species and no substrate was given. In Hym. Europ p. 656 he reports it as rare on Juniperus. No authentic material is seen. The species epithet is therefore somewhat doubtful.
 
Description type:Non-original description 
Description:Amylostereum laevigatum (Fr.) Boid. - Rev. Mycol. 23: 345, 1958. - Thelephora laevigata Fr. Elench. fung. 1: 224, 1828.
Fruitbody resupinate and adnate, but the margin together with the outer layer of the bark may loosen from the substrate. Hymenium smooth, when dry often finely cracked, light brownish to ochraceous or even greyish in older specimens.
Hyphal system monomitic, consisting of richly branched, thin to thick-walled hyphae with clamps, diameter from 3-4 µm. Basidia narrowly clavate, 25-30 x 4-6 µm with 4 sterigmata and a basal clamp. Cystidia numerous, thickwalled, brown or yellowish brown and apically encrusted. The encrusted part 20-30 x 5-6 µm. Young cystidia thin-walled and subulate. Spores cylindrical or narrowly ellipsoid, 7-12 x 3-4 µm, smooth and amyloid.
Habitat. On Juniperus communis and Taxus baccata. Most common on dead, fallen stems of Juniperus, more rarely on erect stems or branches. On Tax us it grows on the bark of living, old trees and as Tax us is far rarer than Juniperus, it may be said to be relatively much more common on the former than on the latter. In Sweden it is also known from cultivated Thuja occidentalis (Goteborg).
 
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