CLASSIFICATION OF AGARICS 175 



briate al first. STEM 2-5 cm. Long, 3 *> mm. thick, solid or apex 

 hollow, sometimes with a tubule, cortex Bubcartilaginous, fibrillose 

 or subftoccose, apes floccose-scurfy, often Bomewhal twisted or 

 curved, pallid inn soon darker or tinged amber toward base. COB 

 TINA cobwebby, evanescent, slight remnants at apes <>f stem or on 

 margin ol pilens. SPORES 8-10x4.6 aiicr. (mostly 8-9x I 5), ellip- 

 tical, s mi in ill, pale ochraceous cinnamon in mass. ( JYST IMA none ; 

 sterile cells on clue of gills arc prominent, cylindrical. W-50 * I 5 

 micr. ODOB radishy. 



Gregarious or Bubcaespitose. On denuded or grassy s..il in open, 

 pastured woods or similar places, often on sterile, gravelly soil. 

 Washtenaw County. May and June (as early as May 3). Frequent 

 locally. 



This Bebeloma loves sterile or gravelly soil which has scanty 

 grass. It is early with us. although Peck reports it for October. 

 In its seasonal habit it corresponds, therefore, with //. gregwritm 

 from which it differs in size, color, and its smaller spores. Peck 

 says it is closely related to H. fastibile but is smaller, with a more 

 slender stem, differently colored pilens and more crowded gills. The 

 margin of the pileus sometimes shows a differentiated brown zone. 

 Small forms are easily confused with //. hiemale, except for the 

 spores and the presence of a cortina. 



Section If. DcniKhiti. Cortina lacking. 



500. Hebeloma sinapizans IV. 



Epicrisis, 1836. 



Illustrations: Cooke. 111.. PI. II.'.. 

 Plate XCVII of this Report. 



PILEUS 6 i- cm. broad, compact, convex expanded, obtuse, viscid 

 (moist), glabrous, even, somewhat irregular, ashy-brown to day- 

 color or whitish-tan, sordid. FLESH thick, soft in age. GILLS 

 adnexed to deeply emarginate, broad, close, dry, pallid then pale 

 alutaceous-cinnamon, edge entire and concolor. STEM stout, 6-12 

 cm. long, L.5-2.5 cm. thick, rigid, equal, even or striate above, fibril- 

 lose, upper pari becoming squarrose-scaly from the tearing of the 

 cuticle, smiled but soon cavernous, white then dingy, apex squamu- 

 lose-floccose. SPORES broadly elliptical, hyaline-apiculate at both 

 ends, obscurely rough, 11-13x7-8 micr., pale-cinnamon in mass. 



OYSTIDIA none. <>|M>K ;md TASTE usually strongly of radish. 



