326 NATURAL HISTORY BULLETIN. 



O. I. Spermagonia and aecidia unknown. 



II. III. Sori epiphyllous, intercostal, early naked, ruptured 

 epidermis conspicuous. II. Uredospores broadly elliptical, 

 broadly obovate or globose, 26-32 by 27-40//., wall pale yel- 

 low, thick, abundantly echinulate with stout points, pores six 

 or more, scattered, indistinct, contents sometimes centrally 

 shrunken. III. Teleutosori blackish, prominently linear- 

 lanceolate with acute ends; teleutospores obovate or lance- 

 oblong, 17-21 by 48-56/x, slightly constricted at the septum, 

 apex obtuse or sub-acute, thickened, side-walls thin, base 

 somewhat narrowed, pedicel firm, rather thick, tinted, as 

 long as the spore or longer. 



EXSIC: 



Ellis and Everhart, N. Am. Fungi, 2890. 

 Griffiths, West Amer. Fungi, 14a. 



This species, which occurs on Spartina cynosuroidcs as 

 well as on S. gracilis, is at present known only from the 

 northwestern United States: Montana, Wyoming, North 

 Dakota, and northwestern Iowa. Until recently (Bot. Gaz. 

 34:14) it has been supposed to inhabit Distichlis spicata, 

 owing to an error in determining the host of the type collec- 

 tion, and hence the specific name. The specimen in Ellis & 

 Everhart's N. A. F. is in reality on Spartina gracilis, 

 although stated to be on Distichlis. The very different Puc. 

 subnitens Diet, is a true Distichlis rust, however. 



The dark, pointed, epiphyllous teleutosori and the uredo- 

 spores with their colored and uniformly thick walls readily 

 distinguish this species from the other forms upon Spartina. 



56. Puccinia chloridis Spcg. (1891. Fungi Guaran- 

 itici: 17). 



56a. On Chloris elegans H. B. K., ii. Ill, Cardenas, Mex., Holway. 

 56b. On Chloris elegans H. B. K. Ill, Acamboro, Mex., Holway. 



Orig. Descr. " Hemi puccinia; uredosporae ovatse tninutissime asperulse 

 subhyalinae; teleutosporae obscure cinnamomeae ellipsoideae constric- 

 tive, lseves non v. vix umbonate, pedicello hyalino elongate 



