Spongipellis Unicolor (Schwein.) Murrill Syn: Polyporus Obtusus Berk

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Spongipellis unicolor (Schwein.) Murrill Syn: Polyporus obtusus Berk. Profile Group: Basidiomycota, Polyporales, Polyporaceae shape Dimidiate; ungulate to applanate size Up to 10 x 18 x 13 cm texture Finely hispid to tometose or finally glabrous pileus Cinnamon buff or ochraceous tawny with age stipe N/A characters context Pale buff Macroscopic pore surface Pale buff to ochraceous pores Circular to angular; often daedaleoid; 1-2 mm in diameter tube layer(s) Concolorous and continuous with the context, up to 2 cm thick hyphal system Monomitic clamp connections On thick walled generative hyphae sterile elements None characters Microscopic Microscopic basidiospores Ovoid to ellipsoid; hyaline; smooth; 7-9 x 6-7 um substrate/host Commonly on living oaks but occasionally on hosts in other genera seasonality Annual type of decay White trunk rot of living hardwoods Habitat characters range To be expected throughout the range of oaks in North America. Common in Arizona and New Mexico. Known only in North America. Notes Readily recognized in the field by the thick, pale brownish, sessile basidiocarps with large pores. Microscopically the monomitic hyphal system with thick-walled generative hyphae with abundant clamps and ellipsoid spores are distinctive. References Overholts, 1953; Gilbertson & Ryvarden, 1986. Species distribution in North Carolina Spongipellis unicolor profile, page 1 of 3 Last update: 09 March, 2011 by B.R. Cody Mycological Herbarium NCSU Last review: 11 March, 2011 by L.F. Grand Spongipellis unicolor (Schwein.) Murrill Habit of Basidiocarps Habit of Basidiocarps Habit of Basidiocarps Basidiospores – 1000 X Spongipellis unicolor profile, page 2 of 3 Last update: 09 March, 2011 by B.R. Cody Mycological Herbarium NCSU Last review: 11 March, 2011 by L.F. Grand Thick Walled Generative Hyphae with Clamps – 400 X Thick Walled Generative Skeletal Hyphae – 400 X Thick Walled Generative Skeletal Hyphae – 400 X Spongipellis unicolor profile, page 3 of 3 Last update: 09 March, 2011 by B.R. Cody Mycological Herbarium NCSU Last review: 11 March, 2011 by L.F. Grand .

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