672 THE AGARICACEAE OF MICHIGAN 



broad, radiating, white. STEM slender, short, incurved, pubescent, 

 disappearing, surrounded at the base by a webby zone of filaments, 

 white. SPOKES elliptic-ovate, pointed-apiculate, 8-10x6 micr., 

 white in mass. CYSTIDIA none. 



On decaying wood, etc., in woods. Probably throughout the 

 State. July-September. Infrequently found. 



Often confused with Claudopns variabilis when the latter is 

 young and white-gilled. It has no doubt also been mistaken for 

 /'. cemdidissimus which however is not resupinate at first and has 

 globose spores. Probably several other small white species occur, 

 but have not been distinguished. 



**Pileus fleshy, with a gelatinous layer on or just beneath the 

 surface. 



712. Pleurotus albolanatus Pk., sp. nov. 

 Illustration : Plate CXLV of this Report. 



PILEUS 5-10 cm. or more broad, resupinate at first, fleshy, 

 lateral, sessile, becoming obovate, reniform or flabelliform, convex 

 to subexpanded, trania slightly differentiated into several layers, 

 upper pari sub gelatinous, surface pulrcrulent-tomcntose, margin 

 involute at first. FLESH rather thin, white, scissile, becoming 

 brittle. GILLS decurrent on stem like base, very crowded, narrow, 

 white to yellowish, somewhat forked, thin. SPORES spherical, 

 I »', uiier. diam., smooth, white in mass. CYSTIDIA none. 



Caespitosely imbricated. On decaying logs of beech, hemlock, 

 etc., of northern Michigan. Bay Mew, Marquette, Houghton. 

 August-< )ctober. Frequent. 



This species approaches Panus angustatus, but differs consistent- 

 ly in the lack of cystidia, in its larger spores, and perhaps in its 

 resupinate pileus. No record seems to be on hand that P. angus- 

 tatus is at first resupinate. The pileus lias a gelatinous feel and is 

 composed of several layers, but in some specimens these are hard 

 in distinguish. Specimens referred to Peck, were labelled by him P. 

 porrigt us var. albolanatus. The spherical spores, which are con- 

 stant, and the subgelatinous layer in the upper part of the pileus 

 warrant me in using Peck's varietal name for a distinct species. 

 Luxuriant specimens become lobed as in the related species, and 

 measure up to 14 cm. in width. The flesh becomes brittle on dry- 

 ing and is rather thin throughout. The tomentosity extends usual- 



