268 The North American Cup-Fungi 



45. Lachnella pulveracea (Alb. & Schw.) Seaver, comb. nov. 



Peziza pulveracea Alb. & Schw. Consp. Fung. 342. 1805. 

 Cenangium ptilveraceum Fries, Syst. Myc. 2: 181. 1822. 

 Tympanis seriata Schw. Trans. Am. Phil. Soc. II. 4: 237. 1832. 

 Cenangium microspermum Sacc. & Ellis; Sacc. Michelia 2: 571. 1882. 

 Lachnum viridulum Massee & Morgan; Morgan, Jour. Myc. 8: 187. 1902. 



Not Dasyscypha viridula (Schrad.) Sacc. Syll. Fung. 8: 437. 1889. 

 Dasyscypha chlorella Seaver, Mycologia 3: 63. 1911. 



Apothecia gregarious, occasionally cespitose, at first rounded 

 and closed, gradually expanding and becoming cup-shaped 

 (mouth constricted in dried specimens), reaching a diameter of 

 .5 mm., clothed with greenish hairs, narrowed into a short, 

 stout stem the base of which is surrounded by a radiating mass of 

 white mycelium, or nearly sessile, pale-greenish; hymenium con- 

 cave, dark-green; hairs irregularly tapering above into a semi- 

 acute apex, reaching a length of 60-80 /x and a diameter of 3-4 ju; 

 asci cylindric or subcylindric, 8-spored, reaching a length of 

 45-60 and a diameter of 6 /x; spores 2-seriate, smooth, hyaline, 

 cylindric, or slightly curved, 2 X 7-9 /x; paraphyses filiform. 



On Ilex opaca and old wood of various kinds. 



Type locality: Europe. 



Distribution: New Jersey to Alabama and Colorado; also 

 in Europe. 



Illustrations: Alb. & Schw. Consp. Fung. pi. 8,f. 2. 



While the hairs are greenish they fade in old specimens and 

 become cinereous. It seems to us that our plants are identical 

 with Peziza pulveracea although authentic material is lacking. 



46. Lachnella arida (Phill.) Seaver, comb. nov. (Plate 126.) 



Peziza arida Phill. Grevillea 5: 117. 1877. 

 Dasyscypha fiavovirens Bres. Fungi Trid. 1: 92. 1887. 

 Dasyscypha arida Sacc. Syll. Fung. 8: 455. 1889. 

 Lachnum Engelmani Earle in Greene, PI. Baker. 1: 25. 1901. 



Apothecia scattered, very short-stipitate, or apparently 

 sessile, at first globose, then expanded but often irregularly 

 angular, or subhysteriform, especially when dr\-, excipular cells 

 dark-brown, giving rise to a dense covering of hairs, reaching a 

 diameter of 4-8 mm.; hymenium concave, yellowish; hairs 

 cylindrical, brown, septate, minutely roughened on the outside, 

 the ends blunt or semiacute, reaching a length of 200-300 ju and 

 a diameter of 5 ;u; asci clavate, 8-spored, reaching a length of 50 /x 



