166 



Mycologia 



Differs from described species on Clematis, as follows : Ren- 

 der soma Rubi (West.) Sacc. var. Clematidis Strasser on Clematis 

 vitalba has spores 34 X S~7 Hendersonia calycina Brun. on 

 Clematis calycina has spores 18X6/X, and H. sarmentorum 

 West. var. Clematidis Trav. on Clematis vitalba is said to have 

 spores 13-15 X 5-7 H. Clematidis Hollos is said to occur on 

 Clematis integrifolia and to afford spores 24-26 X 2-2.5 fx. 

 From all these the form on Clematis panicidata differs in size 

 and subtorulose form of the spores, and probably from the fact 

 that the branches invaded by the fungus assume a reddish to 

 faint copper-colored tint. 



9. Dictyochora Gambellii sp. nov. 



Stroma at first subepidermal, becoming erumpent and splitting 

 the epidemis in an hysteriiform manner, running longitudinally 

 along the stem ; loculi in groups of 2-9, rounded or .by com- 

 pression angular, black, 1 50-470 /z in diameter; asci clavate-cylin- 

 dric, short-stipitate, 100 X 10-12 /x ; paraphyses absent; sporidia 

 obliquely uniseriate, or subbiseriate above, 5-7-septate, slightly 

 constricted at the septa, the end cells usually simple, intermediate 

 cells muriforrm fusoid-oblong, yellowish-brown, becoming 

 opaque, 20-27 X 7-10 p. 



On dead stems of Zea Mays L., north farm of old Gambell 

 farms, Yates, N. Y., May, 1916, Charles E. F airman. 



10. Platystomum phyllogenum sp. nov. 



Perithecia immersed then erumpent vertically, or at times 

 laterally inclined, single or in groups of 2 to 3, with a more or 

 less broad and compressed ostiolum, small, black ; asci cylindric, 

 short-stipitate, rounded at the apex, straight or curved, 8-spored, 

 1 00-112 X 12 /J,, surrounded by numerous filiform paraphyses; 

 spores obliquely uniseriate, ellipsoid, rounded at the ends, 3-sep- 

 tate, not constricted, one or more cells muriform, hyaline at first, 

 becoming smoky, olivaceous or pale-brown, 12-18 X 9-10 



On leaves (mostly on the midrib or veinlets) of Anastraphia 

 Northrupiana on rocks, Province of Pinar del Rio, Bay of Mariel, 

 Cuba, A r . L. Britton and C. S. Gager, Herb. N. Y. Bot. Garden, 

 7678, 7678a, and Mycotheca Fairmani 3535. 



No spots are formed on the leaves by the growth of the fungus, 



