54 TRANSACTIONS OF THE [Sess. lxxxv 



Saint Ola, Mainland, 9fch August 1920, H. H. Johnston. 

 Not native. Very rare. 



Barharea intenyiedia, Boreau {fide T. A. Sprague). — 

 Garden hedge, 15 feet above sea-level, Manse, Hoy, 11th 

 June 1920, 81st July 1920, and 30th September 1920, H. H. 

 Johnston. Not native. A garden weed. Very rare. 



Nasturtium terrestre, Svi. [ = N. palustre, DC.]. — 

 Marshy lochside, 10 feet above sea-level. Loch of Garsow, 

 North Ronaldsay, 21st August 1920, H. H. Johnston; and 

 marshy lochside, 10 feet above sea-level. Loch of Hooking, 

 North Ronaldsay, 28rd August 1920, H. H. Johnston. 

 Native and rare at both stations. Plants in full flower. 

 Petals yellow. Contirms the record of this species from 

 Noi'th Ronaldsay in '' Annals Scot. Nat. Hist.," No. 69, 

 p. 53 (January 1909), and in Spence, " Flora Orcadensis," 

 p. 5 (1914), where it is recorded from Ancum Loch; but I 

 failed to find it at that loch on 20th and 23rd August 

 1920, and Mr. John Scott, Northmanse, North Ronaldsay, 

 informed me, on 20th August 1920, that it does not 

 grow there. 



Sinapis muralis, Br. \_ = Diplotaxii< iniiralis, DC.] {fide 

 G. C. Druce) — Flower border at the side of a house, 40 

 feet above sea-level, Finstown, Firth, Mainland, 9th August 

 1920 and 23rd September 1920, H. H. Johnston. Not 

 native. A garden weed. Very rare, 



Viola cornuta, Linn, (fide G. C. Druce). — Waste ground, 

 80 feet above sea-level, Finstown, Firth, Mainland, 29th 

 July 1920, H.H. Johnston. Not native. Petals blue, with 

 a pale yellowish-white spot on throat of lowest petal. 



Sagina procumbens, Linn., var. h. spinosa, Gibs, (name 

 confirmed by Arthur Bennett). — Road, 150 feet above sea- 

 level, Grieveship, Stronniess, Mainland, 17th August 1920, 

 H. H. Johnston. Native. Rare. Plants in fruit. Leaves 

 linear, awned, minutely spinose — ciliate on the margins. 

 Peduncles and sepals glabrous. Confirms Dr. J. Grant's 

 record for this variety from " near Stronniess " in Spence, 

 " Flora Orcadensis," p. 12 (1914). 



Hypericum pulchrum, lAnn., var. b. i'ROCumrens, 

 Rostrup (fide Arthur Bennett). — Natui-al heathery and 

 gras.sy pasture, 40 feet above sea-level, Purtabreck, North 

 Ronald.say, 20th August 1920, H. H. Johnston. Native. 



