[Vol. 1 

 328 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Key to the Species 



Hymenium eomewhat radiately lamelliform — at least near the margin j 



etom solid 1 



Hymenium plane, rugose-WTinkled, or ribbed and rugose-wrinkled 2 



1. Fructification large, 4-10 cm. high; stem about 1 cm. thick; spores 10-13 x 



4-4 J ^ I.e. clavatus 



1. Fructification small, 1-1 J cm. high; stem 1 mm. thick; pileus umbilicate; 



spores 9x7m 11. C. delitescens 



2. Fructification with pileus infundibuliform and pallid rose; hymenium 



and stem white. In X. Carolina in moss near Kalmia bushes .... 4- C roseus 

 2. Fructification entirely egg-yellow, about 3-9 cm. high, 2J-9 cm. broad. . . 3 

 2. Fructification neither entirely egg-yellow nor with pileus pallid rose and 



hymenium and stem white 4 



3. Pileus convex, then depressed or infundibuliform; stem solid. . .2. C. Cantharellus 

 3. Pileus convex, then depressed or cyathiform; stem hollow or cavernous; 



fructification sometimes branched S. C. odoiatus 



4. Pileus tubiform with cavity extending nearly or quite to the base of 



the stem 5 



4. Pileus not tubiform, but instead infundibuliform, depressed, truncate, 



convex, or flabelliform 6 



5. Pileus and stem smoky brown to blackish; hymenium cinereous drab; spores 



12-16 X 6-10 M S. C. cornucopioides 



5. Pileus drying avellaneous to snuff-brown; stem black with chamois-colored 

 pubescence at its base; hymenium chamois-colored or colored like the pileus; 



spores 12-15 x 7-8 m 6. C. ochrosporus 



5. Pileus somewhat tubiform; hymenium dark cinereous; spores 6-7? x 4^5 m 



7. C. dubius 

 5. Pileus somewhat tubiform or umbilicate, yellowish brown to fuscous; hjone- 



nium and stem yellow; spores 10-12 x 6-8 m 8. C. lutescens 



6. Pileus infundibuliform, 2-3 cm. broad; hjTQenium pallid cinereous; 



spores 10-12 x 6-7 n 9. C. sirmosus 



6. Pileus deeply cup-shaped, 4-8 mm. broad; hymenium cream-buff; 



spores 8 x 6 n 10. C. calyculus 



6. Pileus convex, then umbihcate, 5 mm. broad; hjonenium sometimes 

 obscurely lamelliform, chamois-colored; stem chamois-colored; spores 



9 X 7 fi 11. C. delitescens 



6. Pileus merely depressed, truncate, convex, or clavate 7 



6. Pileus flabelliform 8 



7. Fructification small, 1-3 cm. high, 4r-9 mm. broad, narrowly obconic, white; 



spores 3-4 n in diameter IB. C. taxophilus 



7. Fructification 2-5 cm. high, from obconic often becoming abruptly enlarged 

 and somewhat cerebriform at the upper end but with the stem remaining 



comparatively slender 13. C. unicolor 



7. Fructification large, 6-15 cm. high, clavate or obconic and truncate, tapering 

 downward; stem often bulbous at the base. Fructification dries sorghum- 

 brown to fuscous 14. C. piatillarit 



8. Pileus hgulate at first, then spreading laterally and becoming somewhat 

 palmately cleft into a few branches, fawn-color shading into bone- 

 brown. Known from Ohio IS. C. palmatia 



