50 NEW YORK STATIC MUSEUM 



the genus Anthurus. But soon the tips of the arms separate and 

 the upper part of the dome opens outward or becomes divergent, 

 when it is plainly seen that the inner surface is really the hymenial 

 surface and the species must therefore be referred to the genus 

 Lysurus. 



In these specimens the external part of the arms is white, while 

 in the typical form it is described as pink. In them there are also 

 six white lines or stripes radiating from the base of the stem and 

 marking the inner surface of the volva. I find no mention of a 

 similar character in the type specimens. This character and the 

 white color of the exterior of the arms and the late appearance 

 of the fungus lead me to separate this form under the name 

 Lysurus b o r e a 1 i s (Burt) v. serotinu s n. var. 



Macrophoma burserae 



Perithecia minute, 100-200 n broad, covered by the epidermis, 

 gregarious or aggregated and forming unequal slightly prominent 

 and often confluent pustules, black, white within ; spores ellipsoid, 

 hyaline or nearly so, 16-20 x 10-12 p.. 



Bark of West Indian birch, Bur sera gummif era Jacq. 

 Santiago de las Vegas. Cuba. July. C. F. Baker. 



A species easily recognized by its habit of forming broad pustules 

 or slightly prominent patches beneath the epidermis. 



Macrophoma numerosa 



Perithecia minute, .3-. 5 mm broad, numerous, closely gregarious, 

 membranaceous, nestling in the bark, erumpent, black, whitish 

 within; spores oblong-fusiform, continuous or binucleate, acute at 

 the ends, 12-20 x 3-4 /j.; sporophores very short or obsolete. 



Dead branches of locust, R o b i n i a pseudacacia L. Cin- 

 cinnati, Ohio. June. E. Bartholomew. 



The fungus occupies small branches, surrounding them and ex- 

 tending several inches on them. 



Morchella conica serotina 



Pileus conic or irregular, pointed at the apex or rounded and 

 obtuse, sometimes perforated by a small circular aperture, often 

 sterile with the hymenium brown and the edge of the costae whitish. 



Roslindalc, Massachusetts. October. Mrs U. C. Sherman and 

 Miss J. F. Conant. 



