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 Add this item to the list  Corticium laeve Pers. ex FR.
Page number:13 
Remarks (internal):C. laeve may be recognised by its drab-coloured sporophores which crack strongly upon drying and show the dark hymenial crust supported on a whitish context. Pip-shaped or obovate basidiospores which are usually massed together in groups of 2-4 is another important character.
Identification confirmed by Reid.
Description type:Non-original description 
Description:Corticium laeve Pers. ex FR.
Epicr. Syst. Mycol. 560. 1838. - Corticium laeve Pers., Roemer Neues Mag. Bot. 1 : 110. 1794. -Thelephora laevis Pers., Syn. Fung., 575. 1801. -Thelephora evolvens Fr., Obs. Myc. 1 : 254. 1815. - Corticium evolvens Fr., Epicr. 557. 1838. (Synonymy fide Burt, 1926).
Sporophores annual, thin, membraneous, coriaceous, leathery, resupinate, effused-reflexed, dimidiate, resupinate portion easily separable from the substratum, up to 8 x 3 cm when resupinate, effused-reflexed fructifications are of up to 1 cm radii, thickness up to 1 mm; upper surface in effused-reflexed specimens light yellowish brown -"Light Ochraceous Buff", "Pinkish Buff", "Avellaneous", "Wood Brown"- glabrous, radiately striate, margin introverted; hymenial surface pale yellowish to dark gray - "Light Pinkish Cinnamon", "Pale Vinaceous Fawn", "Vinaceous Buff", "Benzo Brown", "Hair Brown", "Vinaceous Drab" - surface appears mealy due to the deposition of basidiospores, irregularly creviced exposing the white context; margin thinning out, white or concolorous may be raised on drying. Context hyaline or subhyaline, to 900 µm thick, composed of a scantily developed basal layer of parallel hyphae and an intermediate layer of ascending hyphae; hyphal system monomitic-generative hyphae hyaline, thin or slightly thick-walled, branched, septate, with clamp connections, 2.62-5.25 µm in diameter. Hymenium to 100 µm deep, composed of a palisade layer of basidia and paraphyses. Basidia clavate to subclavate, projecting, 45-60 x 4.32-5.25 µm, 4-spored; sterigmata slender, up to 5.25 µm long. Paraphyses clavate-cylindric, shorter and narrower than the basidia. Basidiospores hyaline, obovate or Pip-shaped, apiculate, thin-walled, smooth 5.25-8.75 x 4.32-5.25 µm.
Distribution : North America, Europe, France, India.

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