136 POLYPOREI. 



Pores, very small, subferruginous, orifice whitish, brownish 

 when bruised. 



On Hving and dead trunks of different species of trees. 



This is one of the most common species of hgneous fungi in the Valley. 

 They are called shelves by the common people. The hymenium or under 

 surface is white, as if whitewashed ; this w^hite plane surface is used to 

 delineate pictures of trees, houses, etc., which are permanent. I have a 

 specimen on which I delineated tents, copied from the cover of " George 

 Kennan's Life in Siberia " five 3'ears ago, and they are as plain as when 

 put on. 



P. rimosus. The cracked Polyporus. 



Pileus, pulviuate-ungiilate, much dilated, deeply concen- 

 trically sulcate, cinnamon, then brown or blackish and exceed- 

 ingly rimose ; context very hard, fibrous-radiating, tawny- 

 ferruginous ; the margin broad, pruinate-velvety, rather acute. 



Pores, minute, indistinctly stratified, tawny-ferruginous, 



the mouths rhubarb color. — Morgan' s Mycologic Flora of the 



Miami Valley, Ohio. 



This is only found on locust trees, on deca3^ed spots, and very scarce 

 in the Valle}-. 



P. ribes. Currant-Bush Polyporus. 

 Pileus, corky, coriaceus, rather soft, plane, velvety, ferru- 

 ginous, then umber, margin acute, slightly zoned. 

 Pores, short, small, naked, tawny. 



The currant-bush Polyporus grows at the neck of the root and stem. 

 Not common in the Lehigh Valley. Found specimens in Salisbury 

 Township, near Emaus, in John Reinhard's garden. 



P. salicinus. Fr. 



Pileus, woody, hard, undulate, smooth, in great part 

 resupinate, margin short, obtuse, cinnamon, then brown. 



Pores, very small, round, ferruginous, cinnamon, hard 

 when dry. 



Common on dead branches of swamp willows. 



