CLASSIFICATION OF AGARIi 



clavate, 30-35 s I •"> micr., l-spored, Bterigmata Blender, 6-7 micr. 

 long. I >DOE and TASTE none. 



Scattered <>r gregarious on fhe gr id, in low, wel placet in 



woods. Ann Arbor. Uaj and September. Rar< 



Diflfers from 0. tpichysiwn by its habital «>n the gronnd, Ita 

 glabrous, bygrophanons pileus and i>.\ its gills and Bpori rhe 

 hymenium occasionally has Bterile basidia intermixed, bearing only 

 a single long abortive Bterigma. Authors disagree as to tl 

 of the spores. Britzelmayr gives them as 12x7-8 micr. and 

 Massee as 6x5 micr. It differs from 0. umbratUit in the rather 

 distanl gills and larger Bpores. 



877. Omphalia gerardiana l'k. 

 N. V. State Mus. Rep. 26, 1874 (as Clitocybe 



PILEUS LO-20 mm. broad, nearly plan • Boon infundibuliform, 



bygrophanons, fragile, grayish-brown to brownish-ashy and striatu 

 lah (moist), paler when dry, the surface is il<>n,,i by scurf-l 

 scattered points which become' blackish. FLESH thin, concolor. 

 GILLS decurrent, narrow, subdistant, whitish then tinged with 

 ;ishv or obscure yellowish, sometimes forked. STEM 3-5 cm. long, 

 1-2 nun. thick, cartilaginous, equal, even, hollow by n narrow tubule, 

 glabrous or pruinose-villose toward base, at length 

 pileus. SPORES 7 11 \ ."..."> 1 micr., variable in size, maturing 

 slowly, oblong-ovate, narrow, smooth, white. CYSTIDIA none. 

 ODOR none. 



< >n sphagnum in cedar and tamarack swamps. Ann Arbo 

 Houghton. May, July. Local. 



Differs from 0. sphagnophila Berk., in color and Bpores, i "ding 



to the description. Cooke i 111.. PI. 289) gives figures which are v< 

 like our plants. 0. sphagnophila is said to have a < I i n l:> pale ochre 

 colored pileus and gills, is tough, and Im^ Bmaller Bpores. Peck 

 vacillates in deciding whether this is an Omphalia <>r Clitocybe; it 

 was originally described as a Clitocybe, then in the i~>tli Report it 

 w;i> placed among the Omph alias, Anally in the list of b|h?< 

 described by Peck A'. Y. State Mus. Bull. 131), ii was referred 

 back to Clitocybe. My collections indicate thai it has mostly 

 distinctly cartilaginous Btem, hence ii is placed here. The color 

 varies considerably during its development; in old specimens the 

 whole I'l.ini becomes dingy dark brown. The Bcurfj points on the 

 cap are somewhal as in thai of Clitocybi ectypoides Pk. 



