68 NATURAL HISTOEY BULLETIN 



smooth, 17 to 20 by 10 to 12/a filled with oil-drops; paraphyses 

 clavate. 



On rotten wood. 



A common species on mossy logs in woods, distinguished by 

 the presence of the very long hairs and the orange disc. The 

 spores of this species are very similar to those of Lachnea scutel- 

 lata (L.) Gill, but the external characters are quite different. 

 This species has also been observed by the writer in North Da- 

 kota and is probably widely distributed. 



*Lachnea melaloma (A. & S.) Sacc, Syll. Fung. 8: 181. 1889. 

 Plate 10, f. II. 



Peziza melaloma A. & S., Conspect. Fung. 336. 1805. 



PEZIZA (Dill.) Linn., Sp. PI. 2: 1180. 1753. 

 Peziza Dill., Cat. PI. 76. 1719. 



Receptacle at first closed, globose, then opening and becoming 

 more or less cup-shaped or plane, substipitate or sessile, exter- 

 nally smooth, furfuraceous, or occasionally clothed with soft 

 flexuose hairs (never with sharp-pointed bristles), asci cylin- 

 drical to clavate, 8-spored; spores elliptical to fusiform, smooth,, 

 verrucose, or spinulose; paraphyses filiform, mostly enlarged 

 upwards ; plants varying in color, growing on earth, wood or de- 

 caying materials of various kinds. 



The genus as it has formerly been known has been broken into^ 

 a number of new genera. Four species belonging properly to 

 this genus are described here, but doubtless many more occur. 



KEY TO THE SPECIES. 



Plants light colored yellowish or whitish. 



Plants decidedly cup shaped P. vesiculosa. 



Plants becoming repand with hymenium convex. . P. repanda. 

 Plants dark colored, brown or brownish-black. 



Plants large 3 to 10 cm. in diameter, cup-shaped. . P. iadia. 



Plants small less than 2 cm., disc plane. ... P. hrunneo-atra. 



Peziza vesiculosa Bull., Champ. France 270. 1809. 

 Plate 16, f. I. 



Aleuria vesiculosa Gill., Discom. 45. 1879. 



