New Nortli American Fungi. 



41 



sides short free clavate tubules, attended by very fine long branched 

 threads. Spores in the mass cinereous, globose, minutely warted, 

 6-7 mic. in diameter. 



Growing on the ground, San Bernadino, California; S. B. 

 Parish. ^Ethalium 4-7 cm. in diameter, the short blunt extremities 

 extremely variable in size, the fine threads scarcely more than 1-2 

 mic. in thickness. The internal structure of this Lycogala is very 

 similar to that of Reticularia except the short clavate branches which 

 correspond to the tubules in the other species. The spores under 

 high magnification are reticulate as in the other species. 



ARGYNNA, Gen. Nov. 



Perithecia superficial, carbonaceous, sub-globose, naked, asto- 

 mous, breaking up irregularly. Asci . Sporidia fuligi- 

 nous, uniseptate, papilionaceous. 



A genus characterized by its peculiarly shaped sporidia. Although 

 I can find no asci in the well matured specimen, I am disposed 

 to think the fungus belongs among the Perisporiaceae, and that 

 when an earlier stage is met with the asci will be found. I can 

 discover no other way by which the sporidia can have been pro- 

 duced, and therefore, I assume that the asci have disappeared. 



14. Argynna polyhedron. — Physarwn polyhedron, Schw. N. A. 

 Fungi, No. 2300. Perithecia subglobose, gregarious, dull black, 

 rather large, sessile on a broad base, becoming polyhedral and at 

 length rupturing along the edges into polygonal fragments, which 

 gradually fall away. Sporidia sooty-black, uniseptate, butterfly- 

 shaped, 6-8x4 5 mic. 



Found inside a hollow hickory log which was split open for fire- 

 wood. Perithecia 1-1.5 ram - m diameter. This singular fungus has 

 not before been recorded since the time of Schweinitz. Of course 

 it cannot be conceded that it belongs to the Myxomycetes by reason 

 of its uniseptate sporidia and on account of its structure generally. 

 Long branched threads issue from the inner surface of the wall and 

 mingle with the sporidia, but when cleared of the adherent sporidia 

 they are seen to be very delicate hyaline threads scarcely 1 mic. 

 in thickness, with no suggestion of having borne the sporidia. I 

 am indebted to Dr. George A. Rex for having identified my material 

 with the specimen of de Schweinitz in theherbarium of the Phila- 

 delphia Academy of Sciences. 



