444 Mr Philip Sewell on the Flora of [sess. liii. 



The Flora of the Coasts of Lapland and of the Yugor Straits 

 {N.-W. Siberia), as observed during the Voyage of the 

 "Labrador " in 1888 ; tvith Summarised List of all the 

 Species known from the Islands of Novaya Zemlya and 

 Waigatz, and from the North Coast of Westerii Siberia. 

 By Philip Sewell. (Plate VIII.) 



(Read 13th June 1889.) 



In presenting to the Society an account of the botanical 

 collections made last summer during the voyage of the 

 " Labrador," it is well to acknowledge at the very outset the 

 valuable aid so kindly given by various botanists who 

 have undertaken to name groups of plants submitted to 

 them. 



Next to my indebtedness to Professor Balfour, by whose 

 liberal aid and encouragement I was enabled to make use 

 of the offers of- the Phoenix Company, I must acknowledge 

 the kind help of Mr Arthur Bennett, who with Mr C. B. 

 Clarke has not only named for me the species of Carex, 

 but who has examined and named every critical species of 

 Phanerogaime, allowing me to submit to him the greater 

 part of my collection. His work has been the more difficult, 

 because of the extensive revision of the species of many 

 Arctic genera, lately undertaken by Swedish botanists, and 

 because also authentic specimens of certain of the species 

 recently established have not reached this country. 



To Mr J. G. Baker, Mr C. B. Clarke, and Dr Buchanan 

 White (who has named the species of Salix); also to Mr 

 William Mitten, and to Mr Geo. W. Traill, who have ex- 

 amined for me the Musci and such marine Algoi as I 

 collected, my very sincere thanks are due. 



A small collection of Lichenes has been kindly taken in 

 hand by Mr W. II. Wilkinson. A report upon this, and 

 upon certain fresh-water Algw, also collected, must be left 

 over for a future paper. 



I take this opportunity also to express my thanks to Mr 

 H. N. Sulivan, managing director of the Pha3nix Company, 

 and to Captain Wiggins, who gave me so many facilities for 

 work (ju board their vessel. 



