SUBSECTIOh HYGROCYB1 179 



text Fragile, Fairly thick, white; odor and taste not distinctive. 



Lamellae adnate-decurrent with a pronounced tooth, white, un 

 changing, close, thickish, narrow. 



Stipe 1.5-2 cm long, 6-8 mm thick, white, equal, solid, glabrous 

 dry. 



Spores 7-12 x 4-5.5(6) /*, ellipsoid, a few oblong, smooth, yellow- 

 ish in Melzer's reagent. Basidia 38-52 < 7-9 r . 2- and L-spored. Pleuro- 

 cystidia and cheilocystidia none. Gill trama subparallel, hyphae 4-16 ft 

 broad. Cuticle of appressed hyphae, at times with more or less erect 

 free ends. No differentiated hypodermium. Pileus trama oi radial hy- 

 phae. Clamp connections rare on the cnticnlar and mil trama hyphae. 



Habit, Habitat, and Distribution — Gregarious on humus in oak 

 woods, Michigan, October. 



Material Studied — Michigan: Smith 6056a (type, from Ann Ar- 

 bor, Oct. 13, 1936). 



Observations — Although H. brevipes has the stature of a small 

 specimen of H. pratensis, it shrinks more than specimens of that spe- 

 cies when dried and the pilei have a shining appearance. The colors 

 and large spores give it some resemblance to H. virgineus in which we 

 were at first inclined to place it. H. virgineus is a typical Camaro- 

 phyllopsis with interwoven trama, however, and has an unpolished ap- 

 pearance when dried. It is very difficult to compare a species like this 

 with those known for Europe because the gill trama of many of the 

 more unusual European species has apparently not been critically 

 studied. On the basis of stature alone H. brevipes could be referred 

 either to section Hygrophorus or Camarophyllopsis, but one would not 

 suspect that it is an Hygrocybe. H. stenophyllus Mont, is described as 

 caespitose, but otherwise appears to be close to H. brevipes. However, 

 it has not been recognized since it was described, and there is no infor- 

 mation concerning its gill trama. It might be in section Hygrophorus 

 or in Camarophyllopsis. 



97 



Hygrophorus roseus ( Murr. ) Murr. 



Mycologia 4: 332. 1912 



Hydrocybe rosea Murr., Mycologia 3: 197. 191 1. 



Pileus 1 cm broad, 5 mm high, convex with an umbilicate center, 

 resembling Omphalic in shape, roseus to incarnate, glabrous, smooth, 

 margin entire or rarely lobed, decurved. Context very thin, allowing 

 the lamellae to show through on the upper side. 



