208 NATURAL HTSTOEY BULLETIN 



wood and herbaceous stems this difference here suggests a pos- 

 sibility that the species has been misinterpreted. 



ORBILIA Fries, Summa Veg. Scand. 357. 1849. 



Plants orbicular, waxy-membranaceous, patellate, margin of- 

 ten undulated, when dry horny; asci clavate, 8-spored; spores 

 minute, straight or curved, slender. 



The plants of this genus occur commonly on rotten wood and 

 bark and are characterized by the small, delicate, membranaceous 

 discs which vary in color from nearly white to deep flesh-red. 

 Two forms reported here which are very distinct, probably many 

 others occur. 



KEY TO THE SPECIES. 



Plants deep flesh-red O. vinosa. 



Plants pale yellowish 0. chrysocoma. 



Orbilia vinosa (A. & S.) Karst. Myc. Fenn. 1 : 101. 1871. 



Peziza vinosa (A. & S.) Consp., Fung. 308. 1805. 

 Calloria vinosa Fries, Summa. Veg. Scand. 359. 1849. 



Plants thickly gregarious, often confluent, patellate with the 

 hymenium nearly plane when occurring singly or very irregular 

 when confluent, *thin membranaceous, becoming horny when dry, 

 bright flesh-red when fresh, fading somewhat when preserved 

 for long periods, 1 to 2 mm. in diameter, margin even when 

 young becoming undulate with age ; asci clavate, 35 by 4 to 5/*, 

 8-spored ; spores very slender, straight or curved, about 10 to 15 

 by 1.5//,; paraphyses present. 



On rotten wood. Mt. Pleasant. 



Plants distinguished externally by the bright, flesh-red color 

 and microscopically by the character of the spores. The species 

 was collected in quantity. 



Orbilia chrysocoma (Bull.) Sacc, Syll. Fung. 8: 624. 1889 



Peziza chrysocoma Bull., Champ. France, 254. 1809. 



Calloria chrysocoma Fries, Summa Veg. Scand. 359. 1849. 



Plants sessile, at first closed becoming expanded, scattered or 

 crowded and often confluent, .5 to 1 mm. in diameter, golden- 



