226 The North American Cup-Fungi 



two oil-drops, 10 X 14 jx, hyaline or subhyaline, becoming sculp- 

 tured ; spore-sculpturing consisting of minute papillae ; paraphyses 

 about 4 M in diameter below, enlarged above where they reach 

 a diameter of 8 ix, filled with brown coloring matter. 



On the ground or more often on rotten wood in coniferous 

 woods. 



Type collected by Dr. L. O. Overholts at Tolland, Colorado, 

 June, 1914. 



Distribution: Colorado. 



This species differs from the preceding, which it resembles 

 externally, in the broad-ellipsoid spores. 



9. Peziza violacea Pers. Syn. Fung. 639. 1801. (Plate 30, 



FIG. 2.) 



Peziza Boltoni Quel. Bull. Soc. Bot. Fr. 25: 290. 1878. 

 Aleuria violacea Gill. Champ. Fr. Discom. 47. 1879. 

 Peziza ampelina Quel. Grevillea 8: 116. 1880. 

 Humaria violacea Sacc. Syll. Fung. 8: 149. 1889. 

 Aleuria Boltoni Gill. Champ. Fr. Discom. 206. 1886. 

 Galactinia Boltoni Boud. Hist. Class. Discom. Eu. 48. 1907. 



Apothecia gregarious, sessile or substipitate when young, at 

 first closed and subglobose, gradually expanding and becoming 

 shallow cup-shaped, discoid, or occasionally repand, at first 

 regular in form, becoming irregular, the margin often splitting, 

 externally at first white, finally becoming pale-violaceous, reach- 

 ing a diameter of 3-4 cm., although often much smaller; hy- 

 menium concave, plane or Convex, pale-violet when young, 

 becoming deep-violet with age, finally almost black, even or 

 slightly undulated, usually umbilicate; asci cylindric or sub- 

 cylindric, gradually attenuated below, reaching a length of 

 200-250 A* and a diameter of 12-15 n, 8-spored; spores 1-seriate, 

 or irregularly disposed, ellipsoid, usually containing two small 

 oil-drops, hyaline, becoming sculptured, 8 X 12-13 ^u; spore- 

 sculpturing consisting of very minute warts; paraphyses slender, 

 septate, enlarged above, usually curved and filled with violet 

 granules, reaching a diameter of 8 ^ at their apices. 



On burnt ground and charcoal beds. 



Type locality: Europe. 



Distribution: New York to Wisconsin and Colorado; also 

 in Europe. 



Illustrations: Grevillea 8: pi. 131, f. 4; Boud. Ic. Myc. 

 pi. 276; Gill. Champ. Fr. Discom. (suites). 



