THE AGARICACEAE OF MICHIGAN 



spored -roup. The beginner will be apt to refer G. nidulans to the 

 ochfe-spored group in Crepidotus if he neglects to make a spore- 

 print. This all emphasizes the fact that nature takes no account of 

 the convenience of the student and probably no system can ever be 

 devised in which some plants will not be found, half-way between 

 the groups. This is the largest of the genus, and. is not easily con- 

 fused with other mushrooms except Grepidotus dorsalis which 

 resembles it in colors but is smaller and has globose, ochre-brown 

 spores. The pileus is more often dimidiate or kidney-shaped rather 

 than the shape given in Atkinson's illustration. 



637. Claudopus depluens Fr. 



Syst. Mycol., 1821. 



illustrations: Patouillard. Tab. Aualyt, No. 431. 

 Cooke, 111., PI. 344. 



PILEUS 1-5 mm. broad, white, resupinate at first then re- 

 tlexed, suborbicular, subreniform, conchate, etc., variable in form, 

 floccose, almost sessile or attached by a short, white, villose STEM. 

 FLESH membranous, very thin. GILLS radiating from the stem, 

 broad, subdistant to distant, rose-colored at maturity. SPORES 

 tmgular, somewhat longer than broad, sphoeroid-angular from the 

 end-view, 7-10 x 6-7.5 micr., distinctly rose-colored in mass, nucleate. 



On very decaying wood or black humus, in hemlock and birch 

 mixed woods, in springy places. New Richmond. September. 

 Rarely found. 



Massee gives the spores as sphoeroid; Patouillard and Peck give 

 them slightly longer. It may be that varieties occur which might 

 explain the difference. There was no tinge of red or gray present- 

 in our plants, as described by Fries. They are small and insignifi- 

 cant plants. G. variabilis is similar, but has non-angular spores. 

 Ricken reports the above species under Crepidotus and with smooth 

 spores. 



638. Claudopus byssisedus Fr. 

 Syst. Mycol., 1821. 



illustrations : Patouillard, Tab. Aualyt.. No. 432. 

 Cooke, 111.. PI. 344. 



"PILEUS 5-20 cm. broad, at first resupinate, then reflexed, near- 





