73 



A KEY TO THE NORTH AMERICAN GENERA AND 

 SPECIES OF THE HYGROPHOREAE.— II 



By F. S. Eari.e 



D. Key to the North American Species of Hygrophorus 

 Pileus firm, moist, not viscid ; lamellae distant, arcuate. Section Camarophyleus. 

 Pileus fragile, thin, viscid, rarely floccose, often bright- colored ; lamellae soft. 



Section Hygrocybe. 



Section Camarophyllus. 



1. Lamellae long-decurrent. 



Lamellae ventricose, sinuate-arcuate or adnate. 



2. Pileus white. 

 Pileus grayish-brown. 



3. Cespitose ; stipe short, solid. 

 Scattered ; stipe stuffed or hollow. 



4. Stipe 5 cm. long ; odor none. 



Stipe shorter, 2-2.5 cm - l° n g ! °d° r like ar >i se - 



5. Stipe white ; lamellae darker with age. 



. Stipe brownish ; lamellae white ; pileus dark. 



6. Pileus pale lilac, grayish -white when dry. 

 Pileus whitish, tinged with reddish-brown. 



Section Hygrocybe 

 I. Lamellae decurrent, or sinuate with a decurrent tooth. 



Lamellae adnexed or somewhat free. 



2. Pileus pure white. 

 Pileus yellow. 

 Pileus orange. 



Pileus some shade of red. 

 Pileus grayish brown. 



3. Pileus small, 6-8 mm. 

 Pileus larger, 1-3 cm. 



4. Pileus convex, umbilicate. 

 Pileus convex to plane, obtuse. 



5. Pileus glabrous. 

 Pileus squamulose. 



6. Lamellae decurrent, distant. 



Lamellae sinuate-decurrent, somewhat crowded. 



7. Pileus small, 1 cm. or less. 

 Pileus larger, more than I cm. 



2. 



6.. 



3- 

 5- 



//. stetiophyllus Mont. 

 4- 



H. borealis Pk. 

 H. pusillus Pk. 



H. albipes Pk. 

 H. nigridms Pk. 



H. pallid us Pk. 

 H. sphaerosporus Pk. 



2. 



10. 



H. purvs Pk. 



3- 



5- 



7- 



H. amygdalinus Pk. 



H. parvulus Pk. 



4- 



H. nitidtis B. & C. 



H. ceraceus (Wulf.) Fr. 



H. atirantiaco-hiteus B. & C. 

 6. 



H. c ntharellus Schw. 

 H. squamulosus E. & E. 



