220 



The North American Cup-Fungi 



Apothecia also dark-colored, the color being 

 similar to that of the hymenium. 

 Apothecia large, reaching a diameter of 



8-10 cm. 

 Apothecia small, not exceeding 1 or 2 cm. in 

 diameter. 

 Spores 10-11 X 20-22 m- 

 Spores 12-14 X 25-27 /x. 

 Apothecia externally light-colored, white, 

 whitish, golden-yellow, or occasionally 

 dingy with age. 

 Flesh when broken turning golden-yellow. 

 Flesh when broken not turning golden- 

 yellow. 

 Hymenium ochraceous-brown. 



Apothecia externally pustulate; on 



burnt ground. 

 Not strongly pustulate; on wood. 

 Hymenium nearly black. 

 Spores 8-9 X 17-21 a^. 

 Spores 10 X 14/;. 

 Hymenium violaceous, becoming very dark with 



age; occurring on burnt ground. 

 Hymenium white or whitish, more rarely rosaceous 

 or faintly violet. 

 Hymenium rosaceous. 



Hymenium white, becoming smoky or faintly 

 violet; on burnt ground. 

 Spores remaining permanently smooth. 



Apothecia externally reddish -brown, similar in 

 color to the hymenium. 

 Apothecia marked with concentric rings, sessile. 

 Apothecia not marked with concentric rings, 

 substipitate. 

 Apothecia externally white or pallid, rarely dingy 

 with age. 

 Apothecia cup-shaped or repand, not adhering 

 to the substratum except at the central 

 point of attachment. 

 Hymenium becoming venose-reticulate; spores 



very large, 12-17 X 22-30 yu. 

 Hymenium not becoming venose-reticulate; 

 spores rarely over 20 ^ long. 

 Apothecia becoming repand at maturity. 

 Occurringaboutcavesandcellars; flesh 



often turning yellow when broken. 

 Occurring on rotten wood; flesh not 

 turning yellow when broken. 

 Apothecia normally remaining cup-shaped. 



1. P. badia. 



2. P. brunneoatra. 



3. P. spissa. 



4. P. sjiccosa. 



5. P. pustidala. 



6. P. Emileia. 



7 . P. melaleuca. 



8. P. melaleuc aides. 



9. P. violacea. 



10. P. griseorosea. 



11. P. proteana. 



12. P. concentrica. 



13. P. abietina. 



14. P. venosa. 



15. P. domiciliana. 



16. P. re panda. 



