SUBSECTION CAMAROPHYLL1 365 



gill trama, and the pileus shows a viscid pellicle. It appears to be re- 

 lated to H. gliocyclus which has a viscid stipe. 



223 



Hygrophorus kauffmanii Sm. & Hes. 



Lloydia 2: 44. 1939 



Illustrations: 



Figs. 116 and 117. 



Smith and Hesler, Lloydia 2, pi. 17. 



Pileus 2-11 cm broad, convex, turbinate to plane, at times not fully 

 expanding, canescent, often with minute, spot-like scales, viscid to 

 subviscid, "hazel" to "chestnut" when moist, usually appearing "pecan 

 brown" or "vinaceous tawny," in age fading to "apricot buff," margin 

 incurved and minutely tomentose. Context firm, thick on disc, thin on 

 margin, "light pinkish cinnamon" or darker when moist; odor and taste 

 mild. 



Lamellae adnate, becoming slightly decurrent, "onion skin pink," 

 becoming "Kaiser brown" to "orange-cinnamon," subdistant to nearly 

 close, fairly broad, broadest behind, edges even. 



Stipe 4-10 cm long, 5-20 mm thick, at times enlarged upward, not 

 viscid, apex glabrous or at times subsquamulose, elsewhere fibrillose, 

 "buff pink" at first, soon concolorous with the pileus or darker, canes- 

 cent, solid. 



Spores 7-9 X 4-5.5 /x, ellipsoid, smooth, pale yellow in Melzer's rea- 

 gent. Basidia 48-62 X 6-7 ^, 4-spored. Pleurocystidia and cheilocystidia 

 none. Gill trama divergent, hyphae 4-7 ^ broad. Cuticle a narrow ge- 

 latinous zone of more or less erect hyphae, 100-210 X 2.5-4 fx, forming 

 a loosely tangled turf (not a palisade). No hypodermium differenti- 

 ated. Pileus trama of radially arranged hyphae. Clamps in the gill 

 trama and the cuticle. 



Habit, Habitat, and Distribution — Gregarious to scattered in 

 open oak woods, Michigan and Tennessee, October-February. 



Material Studied — Michigan: Kauffman, Ann Arbor, 1912, 1926, 

 1936; Smith 6046 (type, Ann Arbor, Oct. 13, 1936), 6140, 33104, 

 51162, 62262. Tennessee: Hesler 11553, 13173, 14140. 



Observations — Kauffman collected this species many years ago 

 and in the Agaricaceae of Michigan, 1918, p. 188, described it under 

 the name H. leporinm. Kiihner (1936) states that H. leporinus of 

 Kauffman is the same as H. nemoreus, as the latter is known in Eu- 

 rope. However, if the descriptions of H. nemoreus are carefully exam- 

 ined, it becomes apparent that the latter differs from H. kauffmanii in 



