220 SECTION HYGROCYBE 



posed hyphae. Clamp connections present on the cuticular hyphae, but 

 small and difficult to demonstrate. 



Habit, Habitat, and Distbibution — Gregarious to subcaespitose 

 under aspen and beech on thin sandy soil, Michigan, June. 



Matebial Studied — Michigan: Brooks & Smith 21491 (type, 

 Univ. of Mich. Biological Station, Cheboygan County, June 26, 1946); 

 McKnight, Pellston, July 2, 1953; Singer, Cheboygan Co., July 1, 1953; 

 Smith 21615, 32279, 34029, 36442, 39000; Smith & Brooks 1098, 1099. 



Obsebvations — This species has the stature of H. psittacinus and 

 the colors of the dried fruiting bodies are similar, but is not to be con- 

 sidered a color-form of that species. The dark brown to vinaceous 

 brown young pilei are significantly different as species go in this 

 group. This agaric has been observed in the Great Lakes Begion for 

 the last twenty years, but it was not until the mycological program was 

 started at the University's Biological Station that localities were found 

 where the fungus fruited regularly and could be observed from season 

 to season. Some investigators would probably refer this species to 

 H. sciophanus, but we believe that there is a fundamental difference 

 between it and the true H. sciophanus. Fries (1874) placed the latter 

 between H. colemannianus and H. laetus in his subsection containing 

 species with "Lamellis decurrentibus," whereas H. psittacinus was 

 placed in the following section with gills adnexed to somewhat seced- 

 ing. H. perplexus is so like H. psittacinus in gill characters that Fries 

 certainly would have placed it beside that species if he had seen it. 

 J. Lange's (1935-40) account of H. sciophana establishes a concept 

 closely in line with that of Fries, and to us indicates a species different 

 from H. perplexus. Confusion may have been caused by the descrip- 

 tion of Fries (1863) in his "Monographia" where (p. 18) the gills are 

 described as "attenuato-adnatae, primities leviter adscendentes," but 

 even here he placed the species next to H. laetus. In the same descrip- 

 tion he described the stipe of H. sciophanus as "lubricus," but this 

 should not be misinterpreted as he applied the same term to the stipe 

 of H. laetus in the following description. The H. sciophanus of 

 Kiihner and Romagnesi ( 1953 ) is probably H. perplexus since they 

 arranged it next to H. psittacinus — but they omitted any reference to 

 the type of gill attachment. 



129 



Hygrophorus unguinosus ( Fr. ) Fr. var. unguinosus 



Epicr. Myc.,p. 332. 1838 



Hygrophorus luridus B. & C. sensu Coker, Elisha Mitchell Sci. Soc. 



Jour. 45: 168. 1929. 

 Hygrocybe unguinosa (Fr.) Karst. 1879. 





