106 The North American Cup-Fungi 



1. Psilopezia nummularia Berk. London Jonr. Bot. 6: 325. 



1847. 



Peziza Babingtonii Berk. & Br. Ann. Mag. Nat. Hist. II. 7: 179. 1851. 

 Psilopezia myrothecioides Berk. & Br. Ann. Mag. Nat. Hist. W . 15: 39. 1875. 

 Fleischhakia rhizinoides Rab. Hedwigia 17: 114. 1878. 

 Peziza depressa Phill.; Cooke, Mycographia 233. 1879. Not P. depressa 



Pers. 1796. 

 Humaria depressa Sacc. Syll. Fung. 8: 145. 1889. 

 Rhizina myrothecioides Massee, Brit. Fungus-Fl. 4: 455. 1895. 

 Rhizina Babingtonii Massee, Brit. Fungus-Fl. 4: 455. 1895. 

 Peziza nummularia Morgan, Jour. Myc. 8: 190. 1902. 



Apothecia gregarious, becoming discoid or subdiscoid and 

 closely adhering to the substratum to the extreme margin and sur- 

 rounded by a whitish mycelial growth, reaching a diameter of 

 1-5 mm. or rarely 1 cm.; hymenium plane or slightly convex, 

 reddish-brown to brown, almost black in dried specimens, more 

 or less velvety from the protruding paraphyses; asci cylindric 

 above, tapering below and marked with a distinct spiral which 

 appears to be due to thickening or possibly to a twisting of the 

 ascus, reaching a length of 200-250 n and a diameter of 15-18 n; 

 spores 1-seriate at maturity, ellipsoid, containing one or two oil- 

 drops, hyaline or very faintly yellowish, about 12 X 20-25 m; 

 paraphyses stout, much thickened above and containing coarse 

 brown granules, pale below, reaching a diameter of 10 /x at their 

 apices. 



On rotten wood. 



Type locality: Great Britain. 



Distribution: Ontario to New Hampshire and Greenland?; 

 also in Europe. 



Illustrations: Ann. Mag. Nat. Hist. lY. 15: pi. 2, f. 5; 

 Cooke, Mycographia pi. 110, f. 391; Phill. Brit. Discom. p\. 5, 

 f. 23; Rab. Krypt.-Fl. V: 1135,/. i-J; Jour. Linn. Soc. 31: pi. 16, 

 f.l3. 



2. Psilopezia hydrophila (Peck) Seaver, comb. nov. 



Peziza hydrophila Peck, Ann. Rep. N. Y. State Mus. 34: 51. 1881. 

 Humaria hydrophila Sacc. Syll. Fung. 8: 140. 1889. 

 ?Peziza rivularis Clements, Bot. Surv. Nebr. 3: 8. 1894. 



Apothecia scattered, sessile, becoming expanded, at maturity 

 plane or even convex; hymenium reddish-brown when moist, 

 black when dry, reaching a diameter of 2-5 mm.; asci cylindric 

 above, tapering below; spores 1-seriate, ellipsoid, generally con- 



