Seaver: Hypocreales of North America 85 



whole cluster which is about 3 or 4 mm. in diameter a decidedly 

 whitish appearance ; perithecia ovoid, tapering into a rather long 

 neck, almost flask-shaped, rough, 200 X 325 mic. ; asci at first 

 very slender tapering above, with a knob-like structure at the 

 apex, becoming broader as they mature, about 200 X 5-6 mic. ; 

 8-spored; spores filiform, nearly as long as the ascus, simple. 



On Bertia moriforms on wood and (decaying material?) on the 

 ground. 



Type locality : Europe. 



Distribution : New York. 



Illustrations: Fuckel. Symb. Myc. pi. 4, f. 18; Peck, Ann. 

 Rep. N. Y. State Mus. 43 : pi 4, /. 13 to 17; Winter, Rabenh. 

 Krypt. Fl. i^: 84, /. 1-4. 



Specimens examined : New York City, Seaver. 



The above description is from a specimen collected by the 

 author on Sept. 24, 1906, in a swampy place in New York City. 

 The specimen when collected, looked decidedly white to the 

 unaided eye and consisted of a rather dense cluster of perithecia 

 about 3 or 4 mm. in diameter, each perithecium surrounded by a 

 white mycelial growth and the whole cluster growing on some 

 kind of decaying material on the ground. The specimen differs 

 a little from Fuckel's description in that the perithecia are of a 

 dirty yellowish-white instead of yellowish-green and in the habi- 

 tat. But since it was impossible to determine from the specimen 

 collected, the kind of material on which the plants were growing 

 and as they conform very well in other characters they are 

 referred to this name. 



Our specimen is evidently the same as Mr. Peck's variety 

 cespitosa.^ The asci are very long and are characterized by the 

 knob-like structure at the apex. Fuckel describes the knob as 

 being at the base of the ascus but Mr. Peck states that the knob 

 is at the apex as it is also in our specimen. This mistake could 

 easily occur however since when the asci are removed from the 

 perithecia it is difficult to determine which is the apex and which 

 the base. The asci in Fuckel's specimens are described as being 

 146 by 8 mic. The asci are variable in length but the measure- 

 ments taken here show them to be as long as 200 mic. but the 



* Peck, Ann. Rep. N. Y. State Mus. 43: 79. 1890. 



