72 The North American Cup-Fungi 



length of 120-140 m and a diameter of 8-10 n; spores 1-seriate, 

 ellipsoid, hyaline, 5 X 9-13 m; paraphyses filiform, septate, 

 gradually enlarged above to 3-4 /x thick. 



On leaves of Salix sp. 



Type locality: Mesa Lakes, Colorado. 



Distribution: Known only from the type locality. 



Illustrations: Mycologia 25: pi. 37, f. 8, 9. 



4. Ciborinia Erythronii Whetzel, Mycologia 37: 668. 1945. 



?Sclerotinia gracilis Clements; Bessey, Contr. Bot. Uep. Univ. Nebr. 3: 47. 



1892. 

 Sclerotinia Erythronii Whetzel, M\cologia 18: 232. 1926. 

 ? Ciborinia gracilis Whetzel, Mycologia 37: 668. 1945. 



Sclerotia usually more or less pointed, black, deepl\- buried, 

 or flat and ovate lying on the surface of the soil, 1-1.5 X 5- 

 10 mm. 



Apothecia slightly elevated above the surface of the soil, cup- 

 shaped to shallow saucer-shaped, finally expanded and sub- 

 discoid, or convex, brown, 3 5 mm. in diameter; stems often 

 very long, reaching a length of 5-10 cm. the length varying 

 according to the depth at which the sclerotia are buried; asci 

 cylindric, or subclavate, reaching a length 200-275 ^ and a 

 diameter of 12 /x, 8-spored; spores long-ellipsoid, 7-10 X 20-30 ^u; 

 paraphyses filiform, only slightly swollen above. 



Parasites on Erythronium americanum, occurring on shaded 

 knolls or wooded hillsides. 



Type locality: Labrador Lake, near Tulley, New York. 



Distribution: New York and Nebraska? 



Illustrations: Mycologia 18: 232./. 1, pi. 27. 



5. Ciborinia gracilipes (Cooke) Seaver, comb. nov. 



Peziza gracilipes Cooke, Bull. Buffalo Soc. Nat. Sci. 2: 294. 1875. 

 Sclerotinia gracilipes Sacc. Syll. Fung. 8: 200. 1889. 



Sclerotia thin, rounded, or ellipsoid, formed on the petioles 

 of the host. 



Apothecia stipitate, at first cup-shaped, finally becoming 

 discoid, submembranaceous, yellowish-brown, reaching a diam- 

 eter of 2-3 cm.; asci cylindric, or subcylindric, 8-spored; spores 

 ellipsoid, 4 X 8 /x. 



From sclerotia on the petioles of Magnolia glauca. 



Type locality: Newfield, New Jersey. 



