368 The Scottish Naturalist. 



one mentioned in D. and H.'s list. " Sandy links, 

 waste places." No authority given. 



xcn. Saussurea D.C. 

 i 6 i. Alpina, D.C. Hoy Hill, B. The only station. Rather 

 scarce. 



xciii. Centaurea L. 



162. Nigra L. Pastures Sanday, Westray, Rousay, D. and H. 



There has been for some years one plant at Swanbister, 

 accidentally introduced, apparently from Caithness 

 with Thurso flagstones. 



163. Cyanus L. "Cornfields not frequent," D. and H. Swan- 



bister, 1882. 



xciv. Chrysanthemum L. 



164. Segetum L.J B. Common in cornfields. 



165. Leucanthemum L. Introduced. Swanbister, B. Was- 



bister and Kirkwall, D. and H. Stromness. 



xcv. Matricaria L. 



166. Inodora L., B. Common (the form salina.) 



c. maritima. B. 



xcvi. Tanacetum L. 



167. Vulgare L. Introduced, B. 



xcvn. Anthemis L. 



168. Arvensis L. Wideford among oats, 1848, D. 



169. Nobilis L. Piggar, Swanbister. Introduced, B. 



xcvin. Achillea L. 



170. Millefolium L., B. Common. Corrupted in Orkney to 



" meal and folly." 



171. Ptarmica L., B. Common. 



xcix. Artemisia L. 



172. Vulgaris L., B. A weed of cultivation. Not uncommon. 



c. Gnaphalium L. 



173. Uliginosum L., B. Common. 



174. Sylvaticum L., B. Common. 



175. Dioicum L., B. Piggar, Swanbister. 



ci. Senecio L. 



176. Vulgaris L., B. Common. 



