256 



THE AGARICACEAE OF MICHIGAN 



(cc) Gills purple-gray, at length coffee-brown; stem long-radicating. 

 H. epixanthium Fr. 

 (AA) Pileus rather fragile, sometimes hygrophanous, rarely red or 



yellow. 

 (a) Pileus viscid, small, bay-brown. 246. H. peckianum sp. nov. 

 (aa) Pileus not or slightly viscid. . 



(d) Stem with a wine-colored juice when broken. 250. H. vmosum 



sp. nov. 

 (bb) Stem not with a colored juice. 

 ' (c) Pileus with innate hairy or fibrillose scales. 



(d) Pileus 1-3 cm. broad, with umber-brown hairy scales; spores 

 irregular; gregarious-scattered. 249. H. populinum Britz. 



var. 

 (dd) Pileus 3-10 cm. broad; caespitose. 



' (e) Pileus whitish, dotted with brownish scales. 247. 

 H. lachrymabundum (Fr.) Quel, 

 (ee) Pileus tawny to yellowish; gills often beaded on edge. 

 248. H. velutinum (Fr.) Quel, 

 (cc) Pileus soon glabrous and naked. 



' (d) Pileus 6-10 cm. broad, rugose, subviscid. 251. H. rugoceph- 

 alum Atk. 

 (dd) Pileus not over 6 cm. broad, hygrophanous. 



(e) Growing on lawns, fields or other grassy places, rarely in 

 woods; densely gregarious-subcaespitose. 252. H. incer- 

 turn Pk. 

 (ee) In woods, swamps, thickets, etc. 

 (f) Caespitose around stumps, etc. 



(g) Pileus when moist watery dark brown; gills at first 

 grayish-brown; spores minute. 255 and- 256. 

 H. hyclrophilum Fr. 

 (gg) Pileus when moist honey-brown; gills at first per- 

 sistently whitish. 253. H. appendiculatum, Fr. 

 (ff) Gregarious-scattered, singly; gills narrow, 

 (g) Pileus 4-7 cm. broad, umber-brown when moist; gills 



very narrow. 254. H. coronatum Fr. 

 (gg) Pileus 1-3 cm. broad, pale watery brown when moist; 



very fragile. 257. H. saccharinophilum Pk. 

 (ggg) Pileus 3-6 cm. broad; pale honey brown when moist; 

 • stem 5-10 cm. long. 252. H. incertum var. 

 sylvestris. 



Section I. Fascicularia. Pileus fleshy, naked and glabrous, 

 margin at first silky, brightly colored, not hygrophanous. 



*Large, caespitose: pileus not viscid. 

 245. Hypholoma sublateritium Fr. (Edible) 



Epicrisis, 1830-38. 



Illustrations: Cooke, 111., PI. 577. 



Gillet, Champignons de France, No. 357. 

 Atkinson, Mushrooms, Fig. 25, opp. p. 26, 1900. 

 Marshall, The Mushroom Book, PI. 29, opp. p. 81, 1905. 



