1922-23.] BOTANICAL SOCIETY OF EDINBURGH 181 



1922, H. H. Johnston, plants in flower and fruit. Native and 

 common at all these three stations, in three different islands. 

 This species also grows in the Faeroes, Iceland, Norway, 

 Sweden, and England. 



Aster salignus, Willd. (fide J. Hutchinson). — Grassy banks 

 at burnside, 10 feet above sea-level. Burn of Boardliouse, 

 Birsay, Mainland, 18th September 1922, H. H. Johnston. 

 Not native. One clump of plants, 7 feet long by 3 feet broad, 

 in flower and undeveloped fruit, below the bridge and near 

 houses at the seashore. 



Calluna vulgaris, Hull, var. incana, Reichb. — Heath at 

 the seashore, 20 feet above sea-level. Ha Wick, Waas, 5th 

 June 1884 (plants not in flower or fruit), and 11th September 

 1922 (plants in full flower), H. H. Johnston. Native. 

 Common. Stem and lower surface and margins of the leaves 

 densely clothed with white hairs. Corolla light purple. This 

 hairy variety of the Ling is recorded from the same station 

 (" near the Berry, Walls "), by Mr. W. A. Irvine Fortescue in 

 *' Scot. Nat.," No. xlviii, p. 371 (October 1882), but without 

 any varietal name. See Spence, " Flora Orcadensis," p. 45 

 (1914). 



*Mentha sylvestris, Linn. [ = *Mentha longifolia, Huds.] {fide 

 Arthur Bennett). — Marshy burnside, 180 feet above sea-level, 

 Shurton, Burn of Woodwick, Evie, Mainland, 28th July 1922 

 (plants not in flower or fruit), and 5th October 1922 (plants 

 in flower-bud), H. H. Johnston. Naturalised. Rare. Fresh 

 leaves with the aromatic odour of Horse-Mint. A new record 

 for this species for H. C. Watson's county No. Ill Orkney. 



[Populus balsamifera, Linn, (fide S. A. Skan). Salix pent- 

 andra, Linn, (fide S. A. Skan). Salix viminalis, Linn, (fide 

 S. A. Skan). — -Grassy banks at burnside, 130 feet above sea- 

 level. Burn of Hillside, at the bridge on the Dovnby-Evie 

 Road, Birsay, Mainland, 22nd September 1922,. H. H. Johnston. 

 Not native. All three species planted by man. Rare. 

 Plants not in flower or fruit. Salix viminalis, Linn, (fide 

 S. A. Skan), also from a marsh, 80 feet above sea-level, between 

 Fursan and the Burn of Woodwick, Evie, Mainland, 28th 

 July 1922, H. H. Johnston. Not native. Planted by man, 

 along with a few bushes of Sambucus nigra, Linn., forming 

 a small clump of low shrubs, none of which were in flower or 

 fruit.] 



