IOWA DISCOMYCETES 73 



Phjeopezia fuscocarpa (Ellis & Holw.) Sacc, Syll. Fung. 

 8 : 474. 1889. 



Peziza (Humana) fuscocarpa Ellis & Holw., Jour. Myc. 1: 5. 

 1885. 



Plants sessile, orbicular, 3 to 4 mm. in diameter, externally 

 pruinose-tomentose, olivaceous-yellow; hymenium concave or 

 nearly plane, dark greenish becoming greenish-black, when dry 

 entirely black ; asci cylindrical, 65 to 80 by 4 to 5/* ; spores ellip- 

 tical with ends narrowed, often unequal-sided, at first hyaline 

 then greenish to brown, 7 to 8 by 3 to 3.5^. 



On rotten wood, rather common. 



This species as described by Ellis and Holway was based on 

 material collected in Iowa. The species was found by the writer 

 to be rather common on rotten wood especially on overturned 

 logs where the wood and soil came into contact with each other. 

 The plants when fresh are decidedly greenish becoming darker 

 with age especially when dry. The spores at maturity are smoky- 

 brown, and in some cases apparently 1-septate. The presence of 

 the two oil-drops makes it difficult to determine whether the 

 spores are truly septate or only apparently so. 



GEOPYXIS (Pers.) Sacc, Syll. Fung., 8: 63. 1889. 



Geopyxis (subgenus) Pers., Myc. Eur., 1: 224. 1822. 



Receptacle funnel-shaped or spreading, for the most part 

 rather large fungi with a distinct stem which is generally short 

 and thick. 



One species has been found to be very common on rotten logs 

 in woods. 



*Geopyxis nebulosa (Cooke) Sacc, Syll. Fung., 8: 70. 1889. 



Plate 20, f. ii. 



Peziza nebulosa Cooke, Mycogr., 163. >. 



In woods on rotten logs, Iowa City and Mt. Pleasant. 



ACETABTJLA (Fries) Fuckel, Symb. Myc. 330. 1869. 

 Acetabula (as subgenus) Fries. Syst. Myc 2 : 43. 1822. 



VOL. VI 1. 6 



