88 The North American Cup-Fungi 



the ends of the protruding asci, gradually becoming darker, 

 finally almost black; asci clavate, gradually tapering below into 

 a long, slender, stem-like base, reaching a length of 200-225 fj. 

 and a diameter of 23-27 n, 8-spored; spores 1 -seriate or crowded 

 together so as to become partially 2-seriate, ellipsoid with the 

 ends rather strongly narrowed, thick-walled, the ends often 

 capped with a thickening of the epispore, giving the spore a 

 truncate appearance, hyaline, becoming violet, finally brown or 

 brownish-black, becoming sculptured, 12-14 X 20-24^1; spore- 

 sculpturing taking the form of wart-like projections, the spaces 

 between appearing lighter, giving rise to reticulate markings; 

 paraphyses about 3 /x in diameter and scarcely thickened above, 

 embedded in greenish-yellow mucilaginous substance. 



On burnt places and on charcoal beds. 



Type locality: Finland. 



Distribution: New York to Iowa and West Virginia; also in 

 Europe. 



Illustrations: Ann. Sci. Nat. V. 10: pi. 5,f. 4 (as Ascoholus 

 viridis Curr.) ; Bull. Lab. Nat. Hist. State Univ. Iowa 6: pi. 29, 

 f. 1; Bull. Torrey Club 39: pi. 10, f. 9, 10, 11; Mycologia 8: 

 pi. 184, f. 7-8. 



ExsiccATi: N. Am. Fungi 2908 (as Phaeopezia Nuttallii 

 Ellis & Ev.). 



11. Ascobolus geophilus Seaver, Mycologia 8: 96. 1916. 

 (Plate 7, fig. 2.) 



Apothecia scattered, gregarious or more rarely crowded, at 

 first subglobose, expanding, becoming scutellate to discoid, reach- 

 ing a diameter of 5 mm., externally greenish-yellow, furfuraceous 

 to nearly smooth; hymenium plane or slightly concave, similar 

 in color to the outside of the apothecium, roughened by the 

 protruding asci and becoming darker as the spores mature, 

 finally almost black; asci clavate, gradually tapering below into 

 a stem-like base, reaching a length of 200-250 // and a diameter of 

 16-18 /x, 8-spored but often with only 4 spores developed; spores 

 1 -seriate, becoming 2-seriate or irregularly crowded, ellipsoid, at 

 first hyaline, becoming violet, then brown, 12-13 ^u X 22-25 /x, 

 becoming sculptured; spore-sculpturing consisting of verrucose 

 markings and reticulations, the reticulations consisting of light 

 lines which give rise to an irregular network; paraphyses very 

 slender, sparingly branched, reaching a diameter of 2 ^, scarcely 



