392 SECTION HYGROPHORUS 



Lamellae adnate, becoming short decurrent, whitish or faintly 

 tinged cinereous, close, sometimes subdistant, moderately broad, thin. 



Stipe 3-8 ( 13) cm long, 10-20 mm thick, pallid fuscous or concolor- 

 ous with the pileus, color ceasing abruptly at the line of gill attach- 

 ment, equal or tapering downward, solid, flesh pale cinereous, dry over 

 all, appressed silky or faintly pruinose above, nearly glabrous toward 

 the base. 



Spores 7-9 X 4-5 n, ellipsoid to subellipsoid or drop-shaped, hya- 

 line, smooth, non-amyloid. Basidia 44-50 X 7-8 p, 2- and 4-spored. Pleu- 

 rocystidia and cheilocystidia none. Gill trama of divergent hyphae, 

 5-10 /a broad. Cuticle a cutis of repent (a few more or less erect), 

 medium broad hyphae (3-7 /a), non-gelatinous, not strikingly differ- 

 entiated from the pileus trama. No hypodermium differentiated. Pileus 

 trama of subparallel hyphae disposed radially. Clamp connections on 

 the cuticular hyphae. 



Habit, Habitat, and Distribution — Gregarious under pine and 

 spruce, Canada, Maine, Massachusetts, New York, Michigan, Idaho, 

 Wyoming, Oregon, Washington; also Europe; July-November. 



Material Studied— id aho: Smith 53306, 53329, 53892, 54055, 

 55185, 60208. maine: Parlin 15487. Massachusetts: Boston Myc. Club 

 1448. Michigan: Smith 3879A, 38535, 51029, 58217. new york: Kauff- 

 man, Ithaca, Oct. 24, 1902; Peck (type of H. burnhajni, West Fort Ann, 

 Washington Co.). Oregon: Gruber 683, Mt. Hood National Park, Oct. 

 15, 1942; Smith 18158, 19990, 26813, 27195. Washington: Smith 3263, 

 17493, 17601, 17694, 17919, 17920, 17980, 28843, 486-31; Smith & Bige- 

 low 48778, 49130. Wyoming: Smith 34455; Thiers 99. Canada: (British 

 Columbia) Beebe, Vancouver Island, Nov. 30, 1942; (Ontario) Cain 

 30812; Jackson & Smith 4800. France: Tourillon, Oct. 1938. Spain: 

 Salardir, Sept. 1936. 



Observations — The virgate almost dry pileus and the gills which 

 become grayish in age clearly distinguish it from the closely related but 

 distinct H. calophyllus Karst. The latter is glutinous when wet, and 

 distinctly viscid at other times besides being evenly colored, having 

 white to pale-pink gills and mild taste. There was a slight difference in 

 the spore size as well, but it does not appear to be significant. 



Notes on the type of H. burnhami Pk.: Spores 7.5-10 X 4.5-5.5 /x, 

 ellipsoid, smooth, pale yellowish in Melzer's reagent. Basidia 44-55 X 

 5-7 fx, 4-spored. Pleurocystidia and cheilocystidia none. Gill trama di- 

 vergent, hyphae narrow, 3-5 ^ broad. Cuticle of appressed hyphae; no 

 gelatinous pellicle. Clamps present on the cuticular hyphae. A note in 

 the box (marked Type), signed by Dearness, Jan. 1931, states that he 

 fails to find any specific difference in the micro-features of this and the 





