52 TRANSACTIONS OF THE [Sess. lxxxv 



In the case of those plants whicli have already been 

 recorded 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. Sj'me, 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 VV. 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 "Topographical Botany" (1883), except in 

 the case of species and varieties wliich are not recorded in 

 that Avork. In the latter case the nomenclature adopted 

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

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

 naturalised in ( )rkney, are distinguished by a * prefixed 

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

 italics. 



(Jf the 49 species, varieties, and hybrids recorded from 

 Orkney in the following list, 29 are native, 1 is natural- 

 ised, 18 are mere casuals introduced into Orkney through 

 the agency of cultivation, and 1 was planted by man. 



ABI5REVIATIONS. 



" Anual-s Scot. Nat. Hist." = The Amials of Scottisli Natural History. 

 Bennett, "Suppl. Top. Bot." = Supplement to H. ('. Watson's Toi)0- 



grapliical Botany, second edition. \'>y Artliur Bennett, A.L.S. 



(1905). 

 " Bot. Exdi. Clulj Report" (separate He]iorts l»y tlie Secretary and 



J )istribntor} = Report of The Botanical Exchange Cluh of the 



British I.sle.s, at present called The Botanical Exchange Club and 



Society of the British Isles. 



