Helotium 123 



10. Helotium nigromaculatum (Earic) Seaver, comb. nov. 



Hymenoscypha nigromaculata Earle, Bull. N. V. Bot. Gard. 2: 338. 1902. 

 Phialea nigromaculata Sacc. Syll. Fung. 18: 57. 1906. 



Apothecia occurring on black spots which are .5-1 cm. in 

 diameter, gregarious, brown, sessile, or substipitate, the margin 

 inrolled when dry, becoming turbinate when moist, about .3 mm. 

 in diameter and of equal height, externally fibrillose, the ends of 

 the fibers extending slightly above the margin of the apothecium; 

 asci broadh' clavate, reaching a length of 70 ^ and a diameter of 

 14 yu, 8-spored; spores 2-seriate, or irregularly disposed, irregu- 

 larly ellipsoid, 6 X 18-20 n; paraphyses sparse and rather stout. 



On dying leaves of Iris sp. 



Type locality: Palmetto, Florida. 



Distribution: Known only from the type locaHty. 



No material has been seen. 



11. Helotium fraternum Peck, Ann. Rep. N. Y. State Mus. 32: 



47. 1879. 



Apothecia solitary, scattered, stipitate, reaching a diameter 

 of 2 mm., at first cyHndric, or columnar, finally expanding above, 

 becoming globose, then cup-shaped and finally fully expanded, 

 yellowish to whitish; hymenium at first concave, becoming convex 

 when moist, wax-yellow to ochraceous-orange, when dry becom- 

 ing concave and reddish-brown; asci clavate-cylindric, reaching 

 a length of 70-100 m and a diameter of 10 12 m, 8-spored; spores 

 2-seriate or partially so, elongate-fusiform, often sHghtly curved, 

 usually with an oil-drop in either end, 4-5 X 16 20 ju; paraphyses 

 filiform, scarcely enlarged above. 



On decaying petioles of various species of Acer. 



Type locality: Adirondack Mountains, New York. 



Distribution: Maine to Indiana and West Virginia. 



Illustrations: Mycologia 34: 166./. 14. 



The type specimen in the herbarium of The New York Bo- 

 tanical Garden has been examined. 



12. Helotium Linderi White, Farlowia 1 : 154. 1943. 



Apothecia scattered, stipitate, reaching a diameter of 1 mm., 

 pure-white when fresh, becoming cinereous to nearly black on 

 drying; stem slender, white when fresh, drying to hyaline- 

 ochraccous, smooth, slightly thickened above; hymenium be- 

 coming plane, or slightly concave, white, drying darker than the 



