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Page number:348 
Remarks (public):I. andersonii is extremely common in southwestern Colorado, and probably follows Gambel oak to the northern extension of its range as it does with other Quercus species. However, the small boles of the clonal scrub oak stands in this area probably do not offer as much opportunity for formation of infection courts as do larger Gambel oaks in southern Arizona and New Mexico. Thus one sees this fungus in areas only where Gambel oak has not been recently burned or cut over, and where larger oaks have had time to develop. I. andersonii is important in its contribution to creation of habitats for cavity-nesting birds such as the red-shafted flicker. Voucher specimens - JPL 898; JPL 1138. 
Description type:Non-original description 
Description:INONOTUS ANDERSONII (Ell. et Ev.) Cerny, Ceska Mykol. 17:1. 1963.
Basidiocarps annual, sometimes effused over entire surface of wood in branches or standing snags, developing under the bark or outer sapwood layers and causing decortication, resupinate but often with thick outgrowths of tubes that may appear almost pileate; deep golden-brown (from mass
spore deposits) to dark brown to black (in older, disintegrating parts of the basidiocarp) (near IOYR 5/10 to 10YR 4/8 to 10YR 3/4); pores 1-4 per mm, with lacerate dissepiments as specimens age; margin abrupt, concolorous, fertile. HyphaZ system dimitic; generative tramal hyphae hyaline to light yellow, simple-septate, 2-3 µm diam; contextual skeletal hyphae thick-walled, brown (darkening in KOH solution), some with secondary septa, 3-6 µm diam. Setae frequent, thick-walled, dark brown, ventricose, slightly projecting or embedded, 29-54 x 6.5-8.5 µm; setal hyphae frequent to lacking. Basidia clavate, 4-sterigmate, simple-septate at the base, 14-17 x 5-6.5 µm. Basidiospores yellowish to yellowish-green (Campbell and Davidson, 1963), thick-walled, negative in Melzer's reagent, oval to broadly ellipsoid, 5-8 x 4-6 µm.

 
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