60 The North American Cup-Fungi 



or pyriform, the small end representing the point of attachment, 

 reaching a diameter of 10 ju or rarely as large as 12 ^t, slightly 

 longer than broad, at first smooth, becoming quite strongly 

 roughened, pale-brown with transmitted light. 



Apothecia springing from the partially decayed rootstocks in 

 clusters of variable numbers, stipitate, shallow-cup-shaped, or 

 subdiscoid, reaching a diameter of 1 cm. or rarely larger, pale- 

 brown externally; hymenium concave or nearly plane, a little 

 darker than the outside of the apothecium; stem reaching a 

 diameter of 2 mm. and often reaching a length of several cm., 

 though often short and occasionally almost wanting, the length 

 varying with the depth to which the rootstocks of the host are 

 buried; asci cylindric or subcylindric, 8-spored, reaching a 

 length of 120-140 M and a diameter of 8-10 /x; spores hyaline, 

 ellipsoid, or almond-shaped, 4-5 ^i X 12 /x, usually containing 

 two very small oil-drops. 



On the rootstocks of wild geranium {Geranium maculatum). 



Type locality: Van Cortlandt Park, New York, N. Y. 



Distributions: New York and Wisconsin. 



Illustrations: Mem. Torrey Club 17: pi. 3; Mycologia 37: 

 704,/. 32, 33; 106, f. 34-36; 39: 117,/. 1. 



This fungus occurs regularly season after season in abundance 

 in the same region in the suburbs of New York City. 



3. STREPTOTINIA Whetzel, Mycologia 37: 684. 1945. 



(Plate 86.) 



Stroma a small, black sclerotium, flattened, or hemispherical, 

 firmly attached to the substratum and flat or flattish on the 

 attached surface; conidiophores as in Botrytis except that the 

 branches are strikingly and characteristically twisted tightly as 

 in Streptothrix; conidia smooth, hyaline or nearly so; apothecia 

 minute, short-stipitate; asci 8-spored; spores hyaline, ellipsoid. 



Type species, Streptotinia Arisaemae Whetzel. 



Streptotinia Arisaemae Whetzel, Mycologia 37: 686. 1945. 



Stroma and conidia as above. 



Apothecia stipitate, 1 mm. or less in diameter; asci reaching 

 a length of 100-150 n and a diameter of 8-10 ju; ascospores, 4-6 

 X 8-14 M. 



On disintegrating leaves of Arisaema triphyllum. 



Type locality: Ithaca, New York. 



Distribution: Known only from the type locality. 



Illustrations: Mycologia 37: 685,/. 22-24. 



