Seaver: Hypocreales of North America 



55 



equal in extent to that of the hymenium of the host, deep orange, 

 paler near the margin, staining the host of a similar color ; peri- 

 thecia orange, thickly scattered or often crowded near the center 

 of the stroma where the color is much darker, partially immersed 

 in the substratum; asci cylindrical, becoming i6-spored by the 

 separation of each original spore into 2 subglobose cells; spores 

 subglobose or subcubical, 3-4 mic. in diameter. 



On Tyromyces chioneus. 



Type locality : New York. 



Distribution : New York. 



Specimens examined: New York, Peck (type). 

 Distinguished from H. pallida Ellis & Everh. only by its orange 

 color. 



10. Hypocrea citrina (Pers.) Fries, Summa Veg. Scand. 383. 



1849 



Sphaeria citrina Pers. Obs. Myc. i : 68. 1796. 

 ? Hypocrea Karsteniana Niessl. ; Rehm, Hedwigia 22: 53. 1883. 

 ? Hypocrea fungicola Karsten ; Winter, Rabenh. Krypt. El. : 

 141. 1887. 



Stroma effused, spreading irregularly often for several cm. 

 occasionally interrupted, subfleshy, at first whitish, at length 

 lemon-yellow with the margin cottony and lighter colored, within 

 whitish, whole stroma becoming more or less faded with age 

 often subpallid; perithecia immersed, numerous, ovoid, yellowish; 

 asci cylindrical, 62-75 mic. long, becoming i6-spored by the 

 separation of each original sport into 2 subglobose cells with the 

 lower slightly longer ; individual spores 3-4 mic. in diameter. 



On soil, old fungi, etc. 



Type locality : Europe. 



Distribution: Connecticut to N. York. 



ExsiccATi : Shear, N. York Fungi, j(5j. Other specimens ex- 

 amined: Connecticut, Thaxter, Wisconsin. 



This species seems to be less common in America than in 

 Europe, although through its confusion with the species H. sul- 

 phur ea (Schw.) Sacc. it has been commonly reported. The spe- 

 cies was originally described as terrestrial and an attempt has 

 been made to separate the terrestrial form from that occurring 

 on old fungi. It is doubtful if the two are distinct. 



