No. 15.] HYMENIALES OF CONNECTICUT. 27 



HYPHOLOMA Fr. 

 Surface of cap marked by strong wrinkles which radiate 



from the center i 



Surface of cap smooth 2 



1. Cap brown; stem brittle, sHghtly mealy at the top. . . 



H. hymenocephalum 



Cap gray, tinged with yellow ; stem fleshy, smooth 



H. rugocephalum 



2. Flesh fragile; remnant of veil often left on margin 



of cap 3 



Flesh tough ; margin of cap without remnants of veil 4 



3. Cap brown, often shaded to ochre at margin ; gills 



somewhat forked, umber-colored H. suhaquilum 



Cap gray-brown; gills not forked, white, then brown 



H. appendiculatum 



4. Stem solid ; flesh white H. sublateritium 



Stem hollow; flesh yellow H. fasciadare 



COPRINUS Pers. 

 Cuticle of cap separating into shaggy, concentric scales ; 



stem with a well developed ring C. comatus 



Cuticle not breaking into shaggy scales i 



1. Cap 2 to 4 inches broad, smooth, or covered with a few 



obscure scales; ring imperfect C. atramentarius 



Cap less than 2 inches broad ; ring absent 2 



2. Cap covered with minute glistening scales C. micaceus 



Cap smooth, very fragile C. plicatilis 



PANAEOLUS Fr. 



Stem solid ; cap white P. solidipes 



Stem hollow i 



I. Surface of cap ridged P. rctirugis 



Surface of cap smooth P- campamdatus 



