lO C. K. DODGK 



writer found it in abundance along the low banks of the Tahquamenon River 

 in Luce County. It was later located on swampy ground near Munising, 

 Alger County, and on the margin of Pine Lake near the Huron Mountain 

 Club, Marquette County. The under sides of the leaves are usually velvety- 

 white, presenting a beautiful sight when turned up by a breeze. It is prob- 

 ably frequent throughout the Northern Peninsula. 



Arceuthobium pusillum Peck 

 Dwarf Mistletoe 



This small parasitic plant, known as Arccuthohhim pusillum Peck in 

 Gray's Mannual and as Rozoumofskyan pusilla (Peck) Kuntze, small mistle- 

 toe, in Britton and Brown is attributed to Michigan in Gray. The Michigan 

 Flora mentions it as observed by the late Prof. C. F. Wheeler near Chatham, 

 Alger County ; by B. Barlow at Turin, Marquette County ; and by the late 

 Prof. C. A. Davis near Cadillac, Wexford County. In 1908, the writer saw it 

 in abundance on black spruce in Huron County ; in 1913 on white spruce, Bois 

 Blanc Island, Mackinac County, and in 1916 on white spruce near Peter 

 White Camp in the western part of Alger County. It is now probably well 

 established throughout Michigan. 



Spergularia media (L.) C. Presl. 

 Large Flowered Sand Spurry 



This plant is described in Gray, and it is included in the description of 

 Tissa marina (L.) Britton, salt-marsh sand spurry, in Britton and Brown. 

 It is not mentioned in the Michigan Flora. The range given in Gray is 

 "Near Selina, N. Y. ; also Cal. (Eu.)". The plant has been well established 

 and abundant for nearly ten years at the Grand Trunk freight yards near 

 the city of Port Huron. It is mostly found on wet ground and covers a 

 large area. 



Amelanchier species 

 Juneberry 



Gray describes four species and two varieties and Britton and Brown 

 six species of this difficult genus. The Michigan Flora mentions six species. 

 The species are so variable that there has been little unanimity of opinion 

 as to their status, and the identification of specimens has been difficult. For 

 the purpose of this paper it will be assumed that Prof. K. M. Wiegand's^ 

 revision of the eastern species is to be adopted by botanists generally. Eight 

 species are recognized by Wiegand, seven of which occur in Michigan. The 

 known species in the state so far as described by him will be taken up in 

 order. 



Amelanchier sanguinca (Pursh) DC. Round-leaved Juneberry. — Prob- 

 ably common throughout Michigan. 



"Rhodora, Vol. 14, 1912, p. 117. 



