376 NORTH AMERICAN FLORA [VoLuME 9 
Collybia umbrina Clements, Bot. Surv. Neb. 4: 19. 1896. I have not seen the types. 
Collybia velutina Clements, Bot. Surv. Neb. 4: 19. 1896. Described from specimens 
collected on decaying logs at Bellevue, Nebraska. I have not seen the types; but the descrip- 
tion reads like that of Collybia tenuipes. 
Collybia ? ventricosa (Bull.) Quél. Ench. Fung. 30. 1886. Reported from North Caro- 
lina by Curtis, but probably not an American species. 
Marasmius aculeatus Pat. Bull. Soc. Myc. Fr. 16: 175. 1901. Described from Guade- 
loupe and very similar to G. chrysopeplus, but said to grow in soil and to have only about ten 
lamellae. When examining Patouillard’s collection, I stated in my notes that his M. aculeatus 
was probably the same as G. chrysopeplus and Patouillard himself had already stated that it 
was the same as Pleurotus aureotomentosus Kalchbr., described from Port Natalin 1881. Later, 
when examining specimens of G. chrysopeplus with Bresadola, he claimed that they were not 
distinct from P. aureotomentosus. G. chrysopeplus is a peculiar plant and might easily be 
assigned to Marasmius or Omphalia, but hardly to Pleurotus. 
Panus Sullivantti Mont. Syll. Crypt. 149. 1856. Described from specimens collected 
on rotten wood among leaves near Columbus, Ohio. There are four plants at Paris which grew 
in a cluster on dead wood. I find in my notes that they “might possibly be a young stage of 
Lentinus caespitosus or Collybia, but are certainly not Panus.” 
37. HYDROCYBE P. Karst. Bidr. Finl. Nat. Folk 32: 233. 1879. 
Hygrophorus § Hygrocybe Fries, Epicr. Myc. 329. 1838. 
Hygrocybe Fayod, Ann. Sci. Nat. VII. 9: 307. 1889. 
Godfrinia Maire, Rech. Cyt. Tax. Basid. 116. 1902. 
Fleshy, thin, fragile, putrescent, solitary or gregarious, rarely cespitose; surface viscid, 
usually bright-colored: lamellae waxy, fragile, usually bright-colored, decurrent or adnexed: 
spores hyaline: stipe central, fleshy, fragile, usually hollow: veil none. 
Type species, Hydrocybe sciophana (Fries) P. Karst. 
I, SPECIES OCCURRING IN TEMPERATE NorTH AMERICA, EXCEPT THOSE CONFINED 
TO THE PaciFic coast 
Pileus white. 
Pileus 1-2.5 em. broad. 
Stipe 2 cm. long. 1. H. pusilla. 
Stipe 5 cm. long. 2. H. nivea. 
Pileus 2.5-5 cm. broad; stipe 8-15 cm. long. 3. A. pura. 
Pileus sulfur-yellow, 6-8 mm. broad. 4. H. parvula, 
Pileus pale-yellow, rarely reddish on the disk in H. chlorophana. 
Lamellae arcuate-decurrent. 5. H. nitida. 
Lamellae adnate or slightly decurrent. 6. H. ceracea. 
Lamellae adnexed. 7. H. chlorophana, 
Pileus golden-yellow; lamellae emarginate, orange or purplish on the edges. 8. H. marginate. 
Pileus pinkish-buff, the slime sometimes greenish when young. 9. H. Peckit. 
Pifeus some shade of red, rarely tinged with green, often fading to yellow 
with age or on drying. 
Pileus cuspidate, 
Pileus blackening on drying. 10. H. conica, 
Pileus not blackening on drying. 
Lamellae narrow; spores 6—-7.5 » long. 11. H. ruber. 
Lamellae broad; spores 12-16 u long. 12. H. cuspidate. 
Pileus not cuspidate. 
Pileus 6-10 mm. broad. 13. H. minutula, 
Pileus 1-5 cm. broad. 
Pileus reddish or yellow, covered with evanescent greenish slime. 14. H. pstttacina. 
Pileus incarnate, varying to white or slightly fuliginous, not expal- 
lent; stipe fulvous. 15. H. laeta. 
Pileus reddish, tawny-red, or grayish-red; stipe white. 16. H. laricina. 
Pileus and stipe scarlet, fading to pale-red or yellow. 
Pileus convex. 17. H. miniete. 
Pileus umbilicate. 18. H. fammea. 
Pileus 5-10 cm. broad. 19. H. punicea. 
Pileus some shade of brown or greenish-brown. 
Pileus and stipe pale-brown. 20. H. lurida. 
Pileus olive-brown, fading to yellowish-buff ; stipe grayish-white or brown- 
ish. . ; 21. H. Davisii. 
Pileus greenish-brown or yellowish-brown, not fading on drying; stipe 
yellow. 22. H. immutabilis. 
