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14 BOTANICAL GAZETTE [jULY 



slightly constricted at the septum, apex obtuse or subacute, 

 thickened, side walls thin, base somewhat narrowed, pedicel 

 firm, rather thick, tinted, as long as the spore or longer. 



From Montana to North Dakota and Iowa. On blades of 

 Spartina; uredospores in July, soon followed by the teleuto- 

 spores, which persist through the winter. Specimens have been 

 examined as follows : 



On Spartina gracilis Trin. Oct. 1888, III, Ten-mile creek, Mont. {F, W. 

 Andersoii)\ Oct. 1888, III, Helena, Mont. (185 F, IV. Anderson); Oct. 1888, 

 III, Helena, Mont. (F. D. Kelsey) ; Aug. 1890, ii. III, Helena, Mont. {F. D, 

 Kelsey)\ Sept. 1891, III, Helena, Mont, (type collection, F. Z>. Kehey)\ 

 Aug. igoi, III, near Laramie, Wyo. (1219, Elmer D, Aferrill drnd E, N. H^il- 

 cox). 



On Spartina cynos7iroides (L.) Willd. Aug. 1884, III, Valley city, N. D, 

 (Journey to Wash. Terr., A. B. Seymour)\ Aug. 1886, III, Emmet co., Iowa 

 (544 R. L Cratty)\ May 1899, III, Fargo, N. D. {H. L. Bolley)\ July 1899, 

 II. Ill, Fargo, N. D. {H. L. Bolley), 



This species was described some time ago, but its true char- 

 acter and position have remained unrecognized, on account of 

 error in determination of the host, which was said to be Dis- 

 tichlis maritima, and hence the specific name. The unfortunate 

 mistake has led to much confusion, as many collections on 

 Distichlis have been given this name by wrong assumption, and 

 many unwise comparisons made. 



The type is in the Ellis collection at the New York Botanical 

 Garden, It consists of several portions of leaves, each about 

 8^" long, well covered with teleutosori. It was gathered 

 September 21, 1891, at Helena, Mont., by Rev. F. D. Kelsey. 

 In the herbarium of Mr. A. B. Seymour are two other collections 

 from the type locality, and in the herbarium of Dr. VV, G. Farlow 

 is a fourth collection from the same locality. A comparison of 

 these several collections, one (Anderson's No. 185) being 

 accompanied with inflorescence, leaves not the shadow of a 

 doubt that the host for all of them is Spartma gracilis Trin. 

 There is, however, a Puccinia stibnitens Diet., a wholly distinct 

 species, which does occur upon Distichlis maritima. 



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The pointed extremities of the teleutosori, and the large \ 



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