478 



GENERAL REMARKS. 



From the foregoing can be seen what a varied Hora the Black Hills 

 have. There are found plants from the East, from the Saskatchewan 

 region, from the prairies and table-lands west of the Missouri Kiver, 

 from the Kocky Mountains, and even from the region west thereof. In 

 the footliills and the lower parts of the Hills ])ro])cr the flora is essen- 

 tially the same as that of the surrounding plains, with an addition of 

 Eastern plants which have ascended the streams. In the higher parts 

 the flora is more of a Northern origin. Most of the i)lants composing it 

 are of a more or loss transcontinental distribution but often character, 

 istic of a higher latitude. Some can be said to belong to the Rocky 

 Mountain region. The only trees of Western origin are Pinvs ponderosa 

 scopuhn-um. and IlciuUi occidoitaUs; the others are Eastern or transcon- 

 tinental. The flora resembles therefore more that of the region around 

 the Great Lakes than that of the Rockies. 



The collection contains a little over 700 Phfenogams and Fernworts. 

 This is certainly far from all that grow in the region. A few more 

 known to occur in the Black Hills could have been added to the list, 

 as for instance, Mentzelia oUgoHperma and lli/santhes gratioloides, col- 

 lected by ]\rr. A. F. Woods; Onoclea .seusibiJis and Aster salsugiiioshs, by 

 Prof. T. A. AVilliams; Fritillaria linearis, by Miss I'ratt, of Piedmont; 

 and Sorbus sambueifoUa, by Mr. Runkel, the owner of the sawmills at 

 Runkels. Viburnum prunifolium was also reported by a physician of 

 Custer, but i)erhaps V. Icniugo was mistaken for it. A squatter told 

 me that he had cut hickory poles on the Squaw Creek, a statement 

 which seems doubtful. Jenney, in his report on the Geological Survey 

 of the lUack Hills, reports the black si)ruee and mulberry as growing 

 in the hills. The former probably was confounded with the white 

 spruce, and the occurrence of the latter needs veriflcation. 



To the following botanists acknowledgements are due for help in the 

 determination of the species. The Carices have been determined by 

 Prof. L. H, T'ailey, the genera E])ilobium and Gayophj'tnm by Dr. 

 William Trelcase, Polygonum by Mr. .1. K. Small, Salix by Mr. M. S. 

 Bebb. The determinations of Juncacea*, Graminea', and rmbelliferaj 

 hav(; been verified by Mr. I'>ederick V. Coville, Prof. F. Lamson-Scrib- 

 ner, and Mr. J. N. Rose, who have also made a few corrections where 

 ncc(led. The desciption of Poa pseudopratenHiii is drawn by Professor 

 Scribner. 



In the identification of the collection, the plants have been compared 

 with sjiocimens in the Natioiuil Herbarium and tlic herbarium of the 

 I'niversity of Nebraska. Thanks are also due to Prof. N. L. Lirittou, 

 of Columbia College, and Prof. John Macouu, of Ottawa, Canada, for 

 tlie loan of specimens for com])arison.' 



'Tlio :ukn<iwl('(l<4iuents expressed, p. 118 of this volnme, footnote 1, are also here 

 renewed. 



