114 DUDLEY MEMORIAL VOLUME 



elliptical, 60-110 in diameter; zoosporangia numerous, irregular, angular 

 from mutual pressure, 40-60 in diameter, contents golden yellow; resting 

 spores solitary, 80-120 in diameter, epispore thick, smooth, dark brown. 



On leaves of Ranunculus, Quito, Ecuador. 



On stems, leaves and floral parts of Ranunculus calif ornicus Benth, wet 

 ground between Stanford University and Mayfield. 



In the spring of 1911, many of the buttercups were badly deformed by 

 this fungus, the ovaries, stamens and petals being sometimes attacked as well 

 as the leaves and stems, but this spring, presumably on account of the very 

 light rainfall, I was unable to find more than half a dozen leaves attacked 

 by the parasite. 



My specimens, while agreeing very well with the above description taken 

 from Saccardo, show somewhat greater variation in size of resting spores 

 and sori, and the zoosporangia are considerably smaller, 26-34 x 26-48, usu- 

 ally 15-30 in a sorus. The galls, when solitary, are hemispherical or sub- 

 globose and 150-250 in height. ■ 



Urophlyctis pluriannulatus Farlow. 

 Urophlyctis pluriannulatus Farlow, Rhodora 10:13. 1908. 

 Uromyces pluriannulatus B. & C, Grevillia 3:57. 1874. 

 Synchytrium pluriannulatum Farlow, Bot. Gaz. 10:243. 1885. 

 This fungus was found growing on Saniclua Menziesii H. & A. along 

 the creek below Searsville Lake. 



