CLASSIFICATION OF AOARIi 17 



14. Panus torulosus I' v. (Edible] 

 Syst. fclyc, L821. (As Pleurotus torulosus.) Bpicriais, L8 



Illustrations: Hani, Mushrooms, Pig. L80, p. 225, L908. 

 Gillet, Champignons de Prance, No. 511. 

 Cooke, 111.. Plate LI 19. 



PILEUS 5-10 cm. broad, or broader, fleshy plianl al first then 

 tough, from plane t<» Lnfandibuliform, eccentric or almost lateral, 

 marginate behind, livid flesh color or tiii</<</ violet or reddish, sur- 

 face when young and fresh with a delicate, detersile fomentum, 

 soon glabrous, sometimes slightly scaly in the renin- of the cup 

 even on the margin, sometimes wavy. FLESH pallid, thickish, be- 

 coming thinner when full-grown. GILLS decurrent, clost to sub- 

 distant, narrow, simple, occasionally forked, sometimes anastomos- 

 ing on the stem, pallid to violet rufescenl then alutaceous, - dgt > w n. 

 STEM short, 2-3 cm. long, L-3 cm. thick, sn.ni. solid, tough, eccentric 

 or lateral, covered with a violaceous or gray tomentum. SPORES 

 elliptical, •'» \ '■'< micr., smooth, white. 



Caespitose, on decaying slumps, logs, trunks, etc., of frondose 

 trees. Ann Arbor. September. Infrequent 



Var. conchatus Fr. Pileus thinner, alutaceous and doI with riolel 

 tints; gills closer. On beech log, Bay View. Infrequent. Becom- 

 ing quite large, ap to L5 cm. broad. 



The species of Fries, Panus conchatus, does not seem to me speci- 

 fically distinct, as the characters which he emphasizes occur also in 

 /'. torulosus. Specimens of the latter can be found whose pileus 

 becomes minutely scaly at length, and whose gills \arv forked and 

 anastomosing, although never markedly so. The closeness of the 

 -ills depends somewhat on the expansion of the pileus and this 

 varies not a little. Under certain weather conditions, the violel 

 and reddish tint- of P. torulosus are lacking, and then the plant 

 could be referred to the other species. The spores of the two species, 

 if I have interpreted correctly, are exactly alike, and unless struc- 

 tural differences can he shown it were better i<> make P. conchatus 



a synonym of /'. torulosus as was dune hy Quelet I Enchiridion 

 Pungorum.) Tf collected in dry weather, they may he confused with 



infundibuliform species of Clitocybe. 



Section If. Stiptici. Pileus sessile or prolonged behind in'" 

 stem-like base. 



