350 SECTION HYGROPHORUS 



Fig. 110. H. eruhescens var. erubescens 



cystidia and cheilocystidia none. Gill trama of divergent hyphae 4-10 /x 

 broad. Cuticle of repent, gelatinous, narrow (2-4 fi) hyphae, at times 

 some with free ends which are erect or ascendant. No hypodermium 

 differentiated. Pileus trama loosely interwoven, hyphae more or less 

 radial. Toward the base of the pileus trama there is a zone of periclinal, 

 parallel hyphae resembling an hypodermium, a structural feature not 

 observed in any other species. Clamp connections present in the cuticle 

 and gill trama. 



Habit, Habitat, and Distribution — Gregarious under conifers, es- 

 pecially pine and spruce, Tennessee, Michigan, Idaho, Colorado, New 

 Mexico, Wyoming, California, Oregon, and Canada, June-December; 

 also Europe. 



Material Studied— California : Smith 8338, 8396, 8567, 8603, 

 8703. Colorado: Baxter, Tolland, Aug. 30 and Sept. 4, 1920; Cotner, 

 Tolland, Aug. 26, 1929; Smith 52368, 52479, 52491, 52615, 52692, 52791, 

 52941, 52988. idaho: Smith 46126, 53498, 59170, 59286, 59786, 59970, 

 60014, 60092, 60191, 60239, 60354, 60602; Smith & Bigelow 44292, 

 46255. Michigan: Bailey 179; Smith 34057, 38058, 43703, 43871. new 

 Mexico: Barrows, Aug. 1955. Oregon: Sipe 486; Smith 3521, 3530, 8025, 

 8139, 26898, 55407; Smith & Gruber 19260. Wyoming: Solheim, North 

 French Creek, Aug. 11, 1950; Smith 35709. Tennessee: Hesler 17293. 

 canada: (Ontario) Macral 45049; (Quebec) Hoare, Oct. 6, 1952. 



Observations — The Tennessee specimens, both when fresh and 



