CLASSIFICATION OF AGARK 



lv over tin- whole |>ilcns but b 'times the margin ie glabrous. 



There are oo Btriations. Sometimes the base arises from .1 white, 

 mycelioid subiculum. 



713. Pleurotus mastrucatus l'r. 



Syst. Mycol., 1821. 



Illustration : < looke, ill.. I'l. 243. 



"P1LEUS 2.5 10 cm. broad, at first rcsupinati then reflexed and 

 expanded, sessile, subdimidiate, obovate, Bometimes lobed, flaccid, 

 trama with un upper gelatinous layer, mouse-gray, roughsquamu 

 lose with blackish hairs and rigid points intermixed, margin in- 

 volute ;ii first. GILLS converging to the base of pileus, (without 

 ;i rudimentary Btem), broad, subdistant, whitish-gray. 8PORE8 

 oblong, oblique, 8-9x 1-5 micr., white. 



••< !aespitosely imbricated. On logs or decaying ^ I. September- 

 November." 



This Bpecies has been found in surrounding States and no doubl 

 occurs with us, though I have not found it. Reported in the Chicago 

 Xat. Hist. Surv. Report, and in Morgan's Flora of the Miami Valley, 

 Ohio. It is pare. 



714. Pleurotus atrocaeruleus l'r. v.-ir. griseus PI 

 X. Y. .Mils. Rep. 1 1. 1891. 1 Syst. Myc, 1821. 1 



PILEUS 2-5 fin. broad, <ii first resupinate, thru r«»flexed .mil 

 horizontal, obovate or reniform, upper layer oj trama grlatim 

 mill tough, dark grayish-brown shaded with bluish or blackish tii 

 coarsely villose toward the base, glabrous on margin, 

 slightly wrinkled, margin often lobed. FLESH stm 'in 



ous above, composed ■ >! floccose-hyphae below, the lower layer vi 

 bag in thickness, thinner in front. GILLS radiatii 1 

 tin- region of the attachment of pileus or to tin- bai 

 base, moderately broad, somewhal close, whitisl 

 minutely fimbriate. SPORES elliptic-oblong, narrowei 

 end, 6-7.5x3 ! micr., smooth, white in mas? ' V'STIDl \ 

 acuminate and scattered on the sides of ^ill> and then 

 micr. long; more numerous bul shorter, about ::•> 11 

 <>!' t he gil Is, often capped wit li <•'».! 1 



