232 ANNALS OF SCOTTISH NATURAL HISTORY 



PLANTAGO MARITIMA, Linn., var. PYGM^EA, Lange. St. Kilda, 

 plentiful, R. M. Barrington ("Journ. Bot.," 1886). 



ATRIPLEX BABINGTONII, Woods, var. VIRESCENS, Lange. On the 

 beach near Stornoway, Trail (Ann. Scot. Nat. Hist, 1909, 

 p. 250). 



EUPHORBIA DULCIS, Linn. Sent from Lewis as wild, but no doubt 

 a garden escape, Trail ("Ann. Scot. Nat. Hist.," 1906, 

 p. 1 80). 



MERCURIALIS PERENNIS, Linn. Near Stornoway, W. J. Gibson, 

 sp. 



CORYLUS AVELLANA, Linn. "A number of bushes on the rocky 

 banks overhanging the sea near Lochboisdale in South Uist," 

 Somerville, sp. Undoubtedly native on cliffs in North Harris 

 and South Harris, Shoolbred. Mr. Watson remarked, " In 

 the Hebrides the Hazel has perhaps been introduced again, 

 after having become extinct there." This referred to Balfour 

 and Babington's station of " Rhoddal in Lewis," 1 which was 

 admitted to be a very doubtful one. But Mr. Watson ' 2 remarks, 

 "the question respecting its nativity in the Hebrides would 

 seem to be satisfactorily answered in the affirmative ; Mr. 

 Macphail is said to have found some hazel-nuts in a large 

 moss drain in the Lewis, at a depth of nine feet from the 

 surface." 3 



SALIX HERBACEA, L. In the "Annals," 1905, p. 171, I gave 

 600 feet in St. Kilda (Barrington, sp.), as the lowest known 

 British altitude; since then ("Annals," 1908, p. 107), Mr. 

 Druce records it from " near coast level at Cape Wrath, 

 A. M. Bell," this is of course a very exposed position, but 

 none the less a remarkably low altitude. 



It is given in the paper by Babington from the "top of 

 Knockgava 4 at a lower level than before," but he had no 

 instruments for measuring heights. 



PINUS SYLVESTRIS, L. Remains of this are found in post-glacial 

 deposits in Lewis (Trail, in //#.) 



ALNUS-GLUTINOSA, L. f? Stream-side, Rhoddill Glen, South Harris, 

 Dr. Shoolbred. 



JBETULA VERRUCOSA. Rhoddill Glen, South Harris, planted, Dr. 

 Shoolbred. 



1 "Trans. Bot. Soc. Edin.," i (1844), p. 151. 



2 "Cyb. Britt.," iii. (1852) p. 507. 



3 "Bot. Soc. Edin.," ex " Phytologist," iv. 523. 



4 "Journ. of Life" (1841), 105. 



