Contributions to the Botany op Michigan 9 



Eriophorum tenellum Nntt. 

 Rough Cotton-grass 



It is stated in Gray that the habitat and range of this cotton-grass is 

 "Swamps and bogs. Nfd. to Ont. s. to N. J. and 111.", and about the same 

 distribution is given by Britton and Brown. It is not mentioned in the Michi- 

 gan Flora. 



In 19 14 the species was noticed as frequent in swampy ground near 

 Vermillion and at the lower falls of the Tahquamenon River, Chippewa 

 County, and again near Newberry in Luce County. The writer believes this 

 plant to be common throughout the eastern half of the Northern Peninsula. 



Juncus Gerardi Loisel 

 Black Grass 



The habitat of the black grass is given by Gray and Britton and Brown 

 as "Salt marshes" and the range in part as "Vicinity of the Great Lakes." 

 In the Michigan Flora it is listed as "Rare about the Great Lakes, Gray's 

 Manual," which would indicate that it had been seldom seen in Michigan by 

 our local botanists. As noted under Spartina patens it is found near Port 

 Huron on soil which has become impregnated with salt in the icing of re- 

 frigerator cars. It has persisted here for more than ten years. 



Streptopus longipes Fernald 

 Fernald's Streptopus 



This plant was first described in 1906, and the description in Gray men- 

 tions the character, "rootstock slender and wide creeping" and gives in the 

 range "woods Marquette Co., Mich." In the last edition of Britton and 

 Brown it is thrown into synonymy. The writer is familar with the other two 

 species in our territory, S. roseus and S. amplexifolius, and believes that 5*. 

 longipes is a valid species. The only other Michigan records, so far as the 

 writer has been able to ascertain, are those of Frank C. Gates^ for Douglas 

 Lake, Cheboygan County, Michigan. 



In 19 14 it was noted as common in Chippewa County, especially in the 

 woods about Vermillion. It was again seen in Luce, Schoolcraft, Mackinac 

 and Alger Counties in 191 5, and was abundant in the hardwoods of Mar- 

 quette County in 1916 and 1917. ^V. roseus was not observed in the last 

 named county. 



Salix pellita Anders. 

 Satiny Willow 



The satiny willow apparently has not often been seen in Michigan. The 

 manuals do hot mention Michigan in its range and the Michigan Flora does 

 not refer to it. W. S. Cooper^ noted it on Isle Royale, and in 191 5 the 



"* Rhodora. XIII (1911), p. 237; 14th Ann. Rept. Mich. Acad. Sci., I9i2,p. 

 * i6th Ann. Rept. Mich. Acad. Sci., 1914, p. 119. 



