212 The North American Cup-Fungi 



spored; spores ellipsoid, with or without oil-drops; paraphyses 

 slender. 



Type species, Pezha carhonaria Alb. & Schw. 



Plants confined to burned places or rocky ledges. 1. C. cupidaris. 



Plants not confined to burned places. 



On damp soil; spores containing two conspicuous oil- 

 drops. 

 Apothecia bright-yellow, very coarsely verrucose. 2. G. hronca. 



Apothecia dull-yellow, minutely verrucose. 3. G. Calinus. 



Among mosses; spores without oil-drops. 4. G. vulcanalis. 



1. Geopyxis cupularis (L.) Sacc. Syll. Fung. 8: 72. 1889. 

 (Plate 26, fig. 1.) 



Peziza cupularis L. Sp. PI. 1181. 1753. 

 Peziza carhonaria Alb. & Schw. Consp. Fung. 314. 1805. 

 Pustularia cupularis Fuckel, Symb. Myc. 328. 1869. 

 Peziza subiirceolata Phill. Grevillea 7: 21. 1878. 

 Aleuria cupularis Gill. Champ. Fr. Discom. 39. 1879. 

 Peziza crenata Bull. Herb. Fr. pi. 396. 1788. 

 Geopyxis carhonaria Sacc. Syll. Fung. 8: 71. 1889. 

 Geopy.xis subnrceolata Sacc. Syll. Fung. 8: 72. 1889. 



Apothecia gregarious reaching a diameter of 3 mm. to 1 cm. 

 (rarely larger) and of about the same depth, the mouth of the 

 cup slightly constricted, at least in the younger specimens, and 

 the margin crenate, the whole plant resembling a small acorn- 

 cup, externally pustulate or nearly smooth, dull-yellowish; stem 

 short, usually 2-3 mm. long and about 1 mm. thick, rather 

 variable both in length and diameter, expanding rather abruptly 

 into the apothecium; hymenium concave, a little paler than the 

 outside of the apothecium; asci cylindric, reaching a length of 

 200 n and a diameter of 10 /x; spores 1-seriate, obliquely arranged 

 in the ascus when young and usually parallel when mature, 

 ellipsoid, with the ends slightly narrowed, rather thick-walled, 

 hyaline, smooth, about 9-10 X 18 /z, without conspicuous oil- 

 drops; paraphyses enlarged above, reaching a diameter of 7 ^ 

 at their apices. 



On the ground in burnt places. 



Type locality: Europe. 



Distribution: New York to Washington, West Virginia and 

 Colorado; also in Europe. 



Illustrations: Boud. Ic. Myc. pi. 338, in part; Bull. Herb. 

 Fr. pi. 396, f. 3; E. & P. Nat. Pfi. V: 186,/. 150, A. & B.; Gill. 

 Champ. Fr. Discom. pi. 36; Alb. & Schw. Consp. Fung. pi. 

 4, f. 2. 



