SAPROPHYTIC FUNGI OF Ex\STERX IOWA. 21 



8. FoMES LUCiDUS {Lcys) Juries. 



Pileus from suberose lignose, flabelliform, sulcate-rugose 

 and with a lateral stipe, lactate as is the stipe, shining, at tirst 

 yellow then sanguineous-chestnut; pores determinate, long, 

 minute, from white becoming cinnamon. 



Widely distributed from the tropics to the arctic circle. 

 Common with us, but exceedingly variable. Stipitate forms 

 occur, but the specimens usually brought in are dimidiate, 

 merismoid, irregular, distorted. The polished surface is ahvays 

 characteristic, the color from red to jet black. The context 

 is pale, coarsely floccose and zonate. The size is also variable. 

 Stipitate forms are 4-8 cm in diameter with a stipe some- 

 times 12 cm. Habitat, the ground about the base of stumps 

 especially in low, marshy ground. The stipe is sometimes 

 central. N. A. F. 5. 



XI. POLYP OR US Michcli. 



Pileus fleshy, soft then indurate (sometimes caseo-floccose, 

 fragile), free from zones and furroW'S without, but having the 

 context tibrose-radiate and often zonate. The hymenophore 

 descends as a trama between the pores which are accordingly 

 inseparable from the context as from each other. Neverthe- 

 less the pores form a very distinct stratum, are developed 

 from the outset as round tubes, becomino- later annulate and 

 lacerate. 



^4. Pile 2 sessile, dimidiate; lignatile. 



', 12, 



4, 5, 6- 



C f t -•7'f^ \ pores 'i.vhcn Jrcsh concolorous . . 2, j, 12, ij, 14. 

 " ' / pores tvhen fresh not concolorous, 



l>. Context not vch'ite, -,-'1 /', ■,■"■■ ,, > 7i • 



' ^ sliades of broTcn or ycllo-v, ... 9, 10, ij. 



I. PoLYPORUS RESiNOsus [Se/irade/') Pries. 



Pileus from fleshy suberose, flocculose-pruinate. rusty-fus- 

 cous, the cuticle adnate, rigid, wrinkled, resinaceous; within 

 azonate, pallid; pores minute, equal, pallid. 



A common species, found everywhere on fallen trunks of 

 7'i/ia americana especially in moist shades, nearly always 



