SI BS1 CTIOh C iMAROPHYLLOPSIS I 



appendage as seen in profile, thin-walled, non-amyloid (yellowish 

 hyaline in Melzer's . Basidia 4-spored; pleurocystidia and cheilo- 

 cystidia none. Gill trama oi interwoven hyaline hyphae, mereh yel- 

 lowish in Melzer's reagent. EpicutJs of pileus a thin 8 1") ' layer <>l 

 narrow ( 1.5-3 fi) hyaline appressed gelatinous h) phae. ( lamp i nun. . 



tions present. 



Habit, Habitat, \\i> Distbtbi noN — Under spruce and balsam, 



Reese's Bog, University of Michigan Biological Station. Douglas Lake 

 Mich., Sept. 14. I960. 



Material Studied — Michigan: Smith 63285. 



Observations — This fungus has puzzled us for some years, but in 

 the light of Orton's description it seems to have a natural position be- 

 tween //. niveus and //. borealis, but differs from both in the tendency 



to become yellow. From H. borealis it differs in its thinner pileus 

 which expands to shallowlv funnel-shaped, and in the thin gelatinous 

 epicutis of very narrow hyphae. H. borealis is intermediate in color 

 between H. niveus and //. berkeleyi. The latter as Far as color is con- 

 cerned differs distinctly from //. niveus but in other respects is ex- 

 ceedingly close to it. H. burgdorfensis is not white at first. Orton de- 

 scribed the gills as subcrowded, and the habitat as in pastures, hence 

 there is the possibility that the Smith collection cited here is a distinct 

 form or variety. However, we cannot help but recall the fact that in 

 North America H. pratensis typically grows in the woods in spite of its 

 name. Here again, we have a series of taxa distinguished on progressh e 

 differences in pigmentation, a situation occurring throughout the minis 

 as a whole and one which, it is hoped, can some day be studied from 

 the standpoint of the chemistry inyolyed. 



SERIES CAMAROPHYLLOPSIS 

 Key to Species 



1. Lamellae violaeeous drab (violaceous) 17. //. cincrens 



1. Lamellae some other color 2 



2. Lamellae distinctly colored when young 3 



2. Lamellae white to pallid when young 7 



3. Lamellae pale to dark vinaceous brown IS. //. uligjtnosus 



3. Lamellae buff, ochraceous, or pinkish 1 



4. Odor aromatic 19. //. grata oL ns 



4. Odor not distinctive 5 



5. Pileus yellowish, not hygrophanous (sec also //. cremicolor, page 57) . . 



22. //. cremeus 



5. Pileus rufous or pale pinkisl) 6 



