No. 5.] USTILAGINE^ OF CONNECTICUT. 37 



Entyloma Nymphaeae (Cunn.) Setch. Figs. 18, 33. The 

 sori occur in the leaves, forming yellowish, or with age reddish 

 brown, variable, usually irregular areas most prominent on 

 the under surface. The hyaline spores are ovoid to subspheri- 

 cal, usually distinctly apiculate, and with remains of hypha as 

 an appendage at opposite end, smooth or, under an immersion 

 lens, very minutely verruculose, 10-14^ in length. Conidia 

 have not been found, but the spores germinate in situ. 



Hosts and Distr. : Nuphar advena, New Haven (Setch- 

 ell) ; Nymphcea odorata, Ledyard (Setchell) ; Westville, Sept. 

 2, 1902, Oct. 3, 1904. 



The appendaged and apiculate spores easily distinguish 

 this species from any other. Fig. 33 shows the sori on a por- 

 tion of the leaf of Nymphcea odorata. 



Doassansia Cornu. 



The sori occur on various parts of the host, usually in the 

 leaves, and are rather permanently embedded in the tissues. 

 The spores are united into large, permanent spore balls ; these 

 consist of a distinct cortical layer of sterile cells, with the spores 

 entirely filling the interior, or limited to one or two layers be- 

 neath the cortex, while the interior is filled with sterile cells 

 or threads. The spores are hyaline or yellowish tinted, smooth, 

 and of small to medium size. Figs. 19, 22, 29. 



Our knowledge of this and the next genus is largely due 

 to the investigations of Professor Setchell of the University 

 of California, but at one time a resident of this state, where he 

 collected part of the material with which he worked. The 

 species occur chiefly on plants growing in moist situations, es- 

 pecially on the Alismacese. Of the 24 species described, 10 

 occur in North America, and 5 in Connecticut. They are of 

 no economic importance. 



Key to Species of Doassansia. 



I. Spore balls with spores entirely filling their interior; 

 sori forming lead-colored, slightly elevated pustules 



in leaves D. opaca. 



II. Spore balls with a single layer of spores within which 

 are sterile cells. 



