134 Merriam Plants of the Pribilof Islands. 



be anything like complete, since I was on the islands altogether 

 only two weeks and botanizing was incidental to more urgent 

 duties ; moreover, only limited parts of the islands were trav- 

 ersed, and the date (end of July and early August) was so late 

 that many plants were past flowering. On several rambjes I 

 had the good fortune to be accompanied by Mr. James M. 

 Macoun, of the Geological and Natural History Survey of Can- 

 ada, who will doubtless supplement my list by many additional 

 records, particularly from St. George Island, where my oppor- 

 tunities for collecting were reduced to a minimum. No collect- 

 ing was done on Walrus or Otter Islands. 



ACKNOWLEDGMENTS FOR THE DETERMINATION OF SPECIES. 



The majority of the flowering plants were identified by me on 

 the islands. The entire collection on its arrival in Washington 

 was examined by Dr. George Vasey, Botanist of the United States 

 Department of Agriculture, and was turned over by him to Mr. 

 J. N. Rose, Assistant Botanist, for critical study. Mr. Rose has 

 gone over the collection, verifying and supplementing my 

 determinations, and has contributed critical notes on four species, 

 which are inserted in brackets over his initials. Special groups 

 have been submitted to specialists for determination as follows : 

 The iviliows have been identified by Dr. M. S. Bebb ; the grasses 

 by Dr. George Vasey ; the Carices by Prof. L. H. Bailey ; the 

 Juncacese by Mr. F. V. Coville ; the mosses except the Sphagnums 

 by Mrs. E. G. Britton, Mr. John M. Holzinger, and Dr. V. F. 

 Brotherus, of Helsingfors, Finland; the Sphuynums by Dr. C. 

 Warnstorf, of Neuruppin, Germany ; and the He-pa ticx by Prof. 

 L. M. Underwood. Six species of mosses collected on St. Paul 

 Island by Mr. Macoun during our visit have been described as 

 new by Dr. H. C. Kindberg.* 



BRIEF DESCRIPTION OF THE PRIBILOF ISLANDS WITH SPECIAL 

 REFERENCE TO THEIR VEGETATION. 



The Pribilof group in Bering Sea is about 350 kilometers (220 

 miles) north of the Aleutian Chain, and comprises the islands 

 St. Paul and St. George, separated by about 64 J kilometers (40 

 miles) of sea, and two islets known as Walrus and Otter Islands, 



* Ottawa Naturalist, vol. v, p. 179; separates issued January 12, 1892. 



