98 



MINNESOTA MUSHROOMS 

 Polyporus adustus Smoky Polyporus 



Cap 5-10 cm. wide, gray or smoky, more or less hairy, then smooth, tough, 

 woodv when old, shelf-like ; p ores small, romid, whitish, then dark gray, or black- 

 ish : spores elliptic, 4-5 V' 2ja. The name refers to the color. 



( )n decaying stumps, logs, etc. ; too tough to be of value. 



Polyporus gilvus Rustbrown Polyporus 



C ap 5-10 cm. wide, rust-brown or brown, tough, woody, smooth, uneven, shelf- 

 like ; p ores small, rust-brown. The name refers to the color. 



( )n decaying stumps, logs, etc.. common everywhere : of no value. 



MS"^ 



Fl(;URE 61. PoLVPORl'S UMr.El.l. All's 



Polyporus cinnabarinus Orange Polyporus 



Cap 2-7 cm. wide, orange or vermilion, paler with age, smooth or downy, 

 wrinkled, slightly zoned, corky, shelf-like ; pores round, bright vermilion. The 

 name refers to the color. 



Common on decaying wood ; of no value. 



Polyporus betulinus Birch Polyporus 



Cap 10-311 cm. wide, whitish-lirown to reddish-brown, tough-flesliy, then corky, 

 smooth, zoneless. with a thin distinct skin, swollen, shelf-like ; p ores short, small, 

 white to brownish, wdth hair-like scales on the pore-surface when mature; spores 

 clear, oblong, curved, 4-5/i. The name refers to its host. 



(^n roots and stems of birches ; edible when young. 



