38o BRITISH FUNGI 



1. Fungus with a central stem. 



P. perennis. — Pileus 1-3 in. across, thin and pliant, flattish, but 

 depressed at the centre, velvety, indistinctly zoned, cinnamon- 

 colour, then yello^^^sh red ; pores very short, minute, angular ; 

 stem i-i| in. long, slender, minutely velvety, colour of cap. 



Stem central ; cap sometimes only slightly depressed at the 

 centre, sometimes almost funnel-shaped. 



On the ground under trees, also on fallen trunks. 



P. cinnamomeus.- — Closely resembling P. perennis in general 

 appearance and size, differing more especially in the larger angular 

 pores. 



On the ground under trees. 



2. Pileus sessile, dimidiate or attached by a broad base, often with 

 an adnate portion. 



* Pileus dark-coloured. 



P. versicolor (PI. XXXI, fig. 4). — Pileus horizontal, thin, rigid, 

 more or less semicircular and narrowed at the point of attachment, 

 densely velvety, shining, zoned with various colours ; pores very 

 short, minute, whitish. 



One of our commonest, most beautiful, and most variable of 

 fungi. Sometimes almost entirely resupinate with only the upper 

 portion free, most frequently as described above. Often tufted or 

 imbricated. Pileus often dusky green with brown or orange zones. 



On trunks, stumps and branches. 



P. radiattis. —Vileus corky, rigid, radiately wrinkled, velvety and 

 foxy, then smooth and rusty, about i in. across ; pores minute, 

 pallid with a silvery sheen, then rusty. 



Differs from P. versicolor in the thicker substance and radiately 

 wrinkled pileus. 



On alder, hazel, etc. 



P. polymorphus. — Pileus i in, or more across, resupinate, upper 

 edge loose and refiexed, crisped, smooth, umber ; pores rather large, 

 angular, pallid, torn. 



On branches, worked wood, etc, 



** Pileus whitish, yellowish or pale tan-colour. 



P. hirsutus. — Pileus rather corky, 1-3 in. across, horizontal, 

 almost flat, densely hairy, whitish all over, concentrically zoned ; 

 pores roundish, white, then dingy. 



Variable, sometimes almost entirely resupinate ; at others quite 

 free and attached by a broad base. Often imbricated. 



On trunks, stumps, posts, etc, 



P. albidus.— White. Pileus between corky and woody, variable 

 in shape, free from the matrix, not zoned, but roughly wrinkled, 

 edge blunt ; pores minute, subangular, acute, dissepiments or walls 

 entire at the opening. 



