SI BSECTIOh C \\I {ROPHYLLOPSIS 67 



y 



: 



Fig. 16. //. colemannianus 



pellicle, the white stipe, and broadly ovoid spores distinguish the 

 species. It is closely related to H. subviolaceus, but very easily dis- 

 tinguished by the color of the gills. The greatest difficulty is en- 

 countered in distinguishing it from //. uliginosus. Both have the pileus 

 conspicuously striate when moist and fresh. The latter, as we recognize 

 it, lacks a viscid pellicle, and has a more highly colored stipe. Our data 

 on H. colemannianus do not agree exactly with the European descrip- 

 tion, but at the same time the differences do not appear really signifi- 

 cant. Hence we have referred the viscid species to //. colemannianus 

 and the typically moist one to H. uliginosus. 



15 



Hygrophorus burgdorfensis, sp. nov. 



Pileus 1S.5 cm lotus, viscidus, hygrophanus, paUido-luteus Del 

 "warm buff" deinde "pinkish buff*; lamellae decurrentes, "cartridge 

 buff" demum "pale pinkish buff," latae, distant es; stipes 5-7 cm longus, 

 2.5-4 mm crassus, albidus, cyUndricus oel deorsum constrictus; sporae 



7-9(10) x 4-5 fx, eUipsoideae. Specimen typicum in Herb. Univ. 

 Mich.; ledum prope Burgdorf, Idaho, Aug. 12, 1958, A. //. Smith 



60169. 



