218 TRANSACTIONS OF THE [Sess. lxxviii. 



are not included in Watson's " Topographical Botany," 

 second edition. 



The nomenclature followed is that of " The London 

 Catalogue of British Plants," tenth edition, 1908. 



The abbreviations used are the same as those mentioned 

 in my other paper referred to above. 



Class I. — Dicotyledons. 



Ranunculus Baudotii, Oodron (fide J. T. I. B. Boswell 

 and J. Groves). — Mud at bottom of shallow water in a loch 

 40 feet above sea-level, Loch of Burness, Westray, 13th 

 July 1883, and 27th August 1913, Henry Halcro Johnston. 

 Native. Plants with and without floating leaves. Remarks 

 by Mr. James Groves on the specimens collected by me on 

 27th August 1913: — " Type, I think, the carpels are more 

 numerous than those of the other plants " (from the Loch 

 of Saint Tredwall, Papa Westray) " and are quite glabrous." 

 See "Annals Scot. Nat. Hist.," July 1895, p. 175, in which 

 magazine I first recorded this species from Orkney in the 

 Loch of Brue, Lady, Sanday, 9th July 1883, and Loch of 

 Burness, Westray, 13th July 1883. — Also in mud at bottom 

 of water in a loch 8 feet above sea-level, Loch of Saint 

 Tredwall, Papa Westray, 4th September 1913. Native. A 

 new Orkney station discovered on the above-mentioned 

 date by H. H. Johnston. Plants with and without floating 

 leaves. Many detached portions of plants, broken off by 

 the waves and drifted by the wind, were still growing, 

 floating in shallow water among stones and gravel and 

 mud at the edge of the loch, with the flowers in full bloom, 

 giving one on first inspection the erroneous impression that 

 these detached portions were entire plants growing in their 

 natural habitat. Mr. James Groves doubtfully refers my 

 Papa Westray specimens to the var. confusus (Godron), 

 and makes the following remarks on them : — Carpels slightly 

 hairy and less numerous than with the plants from the 

 Loch of Burness, Westray." 



Ranunculus Flammula, Linn. — -Stony loch-foreshore, 

 50 feet above sea-level, Loch of Kirbister, Orphir, Mainland, 

 30th June 1913, H. H. Johnston. Native. Common. Plants 

 stunted in growth through prolonged drought leaving the 

 loch-foreshore uncovered with water. Stem decumbent, 





