174 TRANSACTIONS OF THE [Sess. 



Additions to the Flora of Orkney, as recorded in 

 Watson's " Topographical Botany," Second Edition 

 (1883). By Colonel H. H. Johnston, C.B., C.B.E., 

 D.Sc, M.D., CM., F.R.S.E., F.L.S. 



(Read I9th April 1923.) 



This ])aper forms a continuation of five papers on the 

 same subject, one of which I read before the Scottish Natural 

 History Society on 4th April 1895, and which was published 

 in " The Annals of Scottish Natural History," No 15, 

 pp. 173-181 (July 1895), and the other four before the Botanical 

 Society of Edinburgh on 15th January 1914, 10th June 1920, 

 17th March 1921, and 20th April 1922, and which were 

 published in the Society's " Transactions," vol. xxvi, pp. 

 207-217 (1914), and vol. xxviii, pp. 23-42 (1920), pp. 51-66 

 (1921) and pp. 98-117 (1922), respectively. Most of the plants 

 mentioned in this paper were collected by me during the year 

 1922. 



Before and after the publication of the second edition of 

 Watson's " Topographical Botany," in 1883, several of the 

 plants mentioned in the following list have been recorded 

 from "Orkney by me and other botanists; but as the value 

 of botanical records is greatly enhanced by the possession 

 of authentic specimens, I have included in this list the 

 names of all specimens in my herbarium, which are either 

 additional to or confirm doubtful records of the plants 

 lecorded from County No. Ill Orkney in the second edition 

 of the above-mentioned book. 



In the case of those plants which have already been re- 

 corded from Orkney, references are given in the following 

 list, under each species and variety, to the books in which 

 the records have been published. These records are principally 

 contained in " A Tour through some of the Islands of Orkney 

 and Shetland," in the year 1804, by Patrick Neill (1806) ; 

 " Notice of some of the rarer Plants observed in Orkney during 

 the Summer of 1849," by John T. Syme, Esq., published in 

 the " Transactions of the Botanical Society of Edinburgh," 

 vol. iv, pp. 47-50 (1850) ; " Florula Orcadensls— A list of 

 plants reported to occur in the Orkney Isles," by H. C. Watson, 

 Esq., F.L.S. , published in " The Journal of Botany," No. xiii, 



