1921-22.] BOTANICAL SOCIETY OF EDINBURGH 99 



recorded from County No. Ill Orkne}^ in the second 

 edition of the above-mentioned book. 



In the case of those plants wliich have already been 

 recorded from Orkney, references are given in the following 

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

 the i-ecords 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 Orcadensis — 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, pp. 11-20 

 (January 1864) ; Annual Reports of the Botanical Exchange 

 Club of the British Isles ; " A new List of the Flowering 

 Plants and Ferns of Orkney," edited by W. A. Irvine 

 Fortescue, and published in " The Scottish Naturalist " 

 (1882-1884); "Supplement to Topographical Botany, 

 ed. ii," by Arthur Bennett, A.L.S. (1905); and "Flora 

 Orcadensis," by Magnus Spence, F.E.I.S. (1914). 



The nomenclature followed is that of the second edition 

 of Watson's " Topograpiiical Botany " (1883), except in 

 the case of species and varieties which are not recorded in 

 that work. In the latter case the nomenclature adopted 

 is that of " The London Catalogue of British Plants," tenth 

 edition (1908). Non-native plants, which have become 

 naturalised in Orkney, are distinguished by a * prefixed 

 to the names, and the names of casuals are printed in 

 italics. 



Of the 42 species, varieties, forms, and hybrids recorded 

 from Orkney in the following list, 29 are native, 1 is 

 naturalised, 10 are mere casuals introduced into Orkney 

 through the agency of cultivation, and 2 w^ere planted 

 by man. 



Abbreviations. 



"Annals Scot. Nat. Hist.-' = The Annals of Scottish Natural History. 



Bennett, "Supjjl. Top. Bot." = Supplement to H. C. Watson's Topo- 

 graphical Botanv, second edition. By Arthur Bennett, A.L.S» 

 (1905). 



