Seaver: Discomycetes of North Dakota 105 



Lasiobolus. 

 ascophanus. 

 Thecotheus. 



ascobolus. 

 Saccobolus. 



Juice turning* yellow when flesh is broken. 6. Galactinia. 

 Juice remaining colorless. 7. Peziza. 



Plants medium or small, 1 cm. or less in 

 diameter. 



Occurring on dung of animals (except one 

 species which occurs on old paper, 

 cloth, etc., and a few others not here 

 recorded). 

 Spores entirely colorless. 



Asci 8-spored, plants yellowish, ciner- 

 eous or flesh-colored. 

 Plants with conspicuous, colorless 



spines. 8. 

 Plants without spines. 9. 

 Asci 32-spored, plants white. 10. 

 Spores colored, at first bright purple, later 

 brown. 



Spores free in the ascus. 11. 

 Spores united in a ball in the ascus. 12. 

 Occurring on wood, herbaceous stems, living 

 leaves, etc. 

 Plants superficial on the substratum. 



Clothed with a dense covering of soft, 

 light-colored hairs. 

 Plants sessile. 13. 

 Plants stipitate, stem often slender. 14. 

 Not clothed with hairs. 



Plants stipitate, stem stout, or 

 slender. 



Stem short, stout, plants occur- 

 ring on wood. 

 Hymenium bright yellow, 



disc nearly plane. 15. 

 Hymenium smoky-brown, 

 beaker-shaped. 16. 

 Stem comparatively long and 

 slender, on herbaceous 

 stems, etc. 

 Plants small, 1 mm. or less 



in diameter. 17. 

 Plants medium, 3-5 mm. in 

 diameter. 18. 

 Plants sessile. 



Substance soft and plants not 

 black in color. 

 Medium, 3-5 mm. in di- 

 ameter. 

 Dark purple, rubbery, 



spores colorless. 19. Coryne. 



Trichopeziza. 

 Dasyscypha. 



Helotium. 

 Geopyxis. 



Phialea. 



ClBORIA. 



