January 31, 1913 135 



ADDITIONS TO THE FLORA OF THE BLACK HILLS 



OF SOUTH DAKOTA— II 



By Stephen Sargent Visher 



In Torreya for September, 1909, pages 186-188 appeared a 

 first list of additions. In this some eight species were added to 

 the flora of the state and some eight additions new to llie Hill?, 

 though known from the eastern part of the state. 



June 30, 191 1, Harney Peak was visited and a small num- 

 ber of plants collected. These were determined by Professor 

 Aven Nelson. Six additions to the published flora of the .state 

 can be made as a result. 



July 22-27, 1912, in connection with other state survey 

 work in the northern part of the Black Hills, in localities not 

 visited in 1908, certain interesting plants were collected. These 

 were determined by Dr. P. A. Rydberg. Thirteen proved to be 

 additions to the flora of South Dakota, and three others are new 

 to the Black Hills, though known from the eastern part of the 

 state. Three others recorded by Rydberg, Cont. U. S. Nat. 

 Herb. 3: 463-536. pL jy-20. 1896, in his list of the plants of the 

 Black Hills, but not included in Saunders Catalog in Bulletin 

 64, South Dakota Experiment Station, 1899, are mentioned. 



In the following list the nineteen additions to the state 

 flora are printed in italic; tho.se known also from the eastern 

 part of the state are followed by (eastern). I am grateful to Dr. 

 Rydberg for editing this list for me. 



Agrostis hyem.alis (Walt.) B. S. P. 



Abundant on wet ground, especially at high altitudes. Col- 

 lected near Nema (eastern). Collected near Custer by Rydberg 

 but omitted by Saunders. 



Alopecurus aristulatus Michx. 



Fairlv frequent on wet grounds along the Boxelder catnon. 

 Though recorded by Rydberg under the name oi A. geniculatus 

 this species is recorded onl\' from eastern South Dakota by 

 Saunders. 



Bromus Pumpeij.ianus Scribii. 



Tolerably coninion on Harney Peak. Though recorded by 

 Rydberg this species is entirely omitted \^\ Saundtrr^. 



