140 The North American Cup-Fungi 



44. Helotium aurantium Seaver, nom. nov. 



Pezizella aurantiaca Cash, Mycologia 28: 301. 1936. Not Helotium auranti- 

 aciim Cooke; Phill. Grevillea 19: 106. 1891. 



Apothecia sessile, or subsessile, superficial, single, or cespitose, 

 at first subglobose, then cup-shaped to applanate, contorted by 

 mutual pressure, waxy-fleshy, salmon-orange to orange-brown, 

 1-2 mm. in diameter, externally powdery, margin delicately 

 fimbriate; hymenium concave, or plane, colored like the exterior; 

 asci cylindric-clavate, gradually narrowed below, 8-spored, 

 reaching a length of 38-45 /x and a diameter of 4-5 n; spores 

 long-ellipsoid, straight, or curved, 1-2-seriate, hyaline, or pale- 

 greenish, usually with two oil-drops, 1.5-2 X 7-9 n; paraphyses 

 filiform, rarely branched, enlarged above to 1.5 ju. 



On bark of Picea. 



Type locality: Grand Mesa, Colorado. 



Distribution: Known only from the type locality. 



Illustrations: Mycologia 28: 302,/. 5. 



The author of this species states that in general appearance 

 it resembles the preceding, Helotium lariciniim, from which it 

 differs microscopically. 



45. Helotium atrosubiculatum Seaver «& Waterston, Mycologia 

 32: 397. 1940. (Plate 107, Fig. 2.) 



Apothecia thickly gregarious, occasionally forming congested 

 masses, stipitate, gradually expanding above, becoming shallow 

 cup-shaped, occasionally convoluted, 2-4 mm. in diameter and 

 about 2 mm. high, externalh' grayish-brown and pruinose; 

 hymenium concave, whitish, even, or in larger specimens con- 

 voluted; asci clavate, reaching a length of 60 jjl and a diameter of 



6 ju; spores ellipsoid, each containing two oil-drops, 2-2.5 X 6- 



7 n; paraphyses filiform, about 1 /x in diameter. 



On the blackened surface of leaves of Archontophoenix 

 Alexandrae rotting on the ground. 



Type collected at Hungry Bay, Bermuda, December 2, 1938. 

 The black subiculum seems to be a constant character in this 

 species. The base of the stem of the fungus is also black and 

 easily detached near the base leaving disc-like scars which them- 

 selves look like minute discomycetes. 



Distribution: Bermuda and British Guiana. 



Illustr.\TTONs: Mycologia 34: 15,/. 1, (lower figure). 



