297 



NOTES ON THE FLORA OF SHETLAND. 

 with some ecological observations. 



By William West, F.L.S. 



(Concluded from p. 275.) 



List of the Vascular Plants noted. 

 0. = Ollabeny and district in the north of the Mainland. 

 B H. = Ronas Hill in the north of the Mainland. 

 U. = the district about Baltasound in Unst. 

 A few additional plants were noted during a short time 

 between Scalloway and Lerwick ; these are indicated by Le or Sc. 



Botrychium Lunaria Swartz. U. In a few localities on un- 

 disturbed land. 



Polyjpodiimi vulgare L. C7, 0. In rock crevices at low ele- 

 vations only. 



LastrcBa aristata Britten & Rendle. U, 0. Scarce. 



Asplenium Adiantum-nigrwn L. U. Only on one set of 

 rocks, and quite dwarfed ; the height of the plants I measured 

 from rhizome to leaf-tip averaged one and a quarter inches. 

 Fairly plentiful. 



Blechnum Spicant With. The most frequent fern by far. 



Pteris aquilina. U, 0. Only a few plants were seen in Unst, 

 almost at sea-level. Near Ollaberry it was only seen a little 

 above the Whaling Station at the foot of Eonas Hill ; here it was 

 on the banks of a rill in fair quantity, but dwarfed, though not 

 rising to 200 ft. above sea-level. 



Equisetum limosum L. U, 0. Local. — E. sylvatic2cm Li. 0. 

 Local. — E. imlustre L. U, 0. — E. arvense L. 0. 



Lycopodium alpimmi L. B. H. At 1200 to 1400 ft. mostly.— 

 L. Selago L. B. H. From 500 to 1400 ft. 



Selaginella selaginoides Link. U, 0. Very abundant on the 

 Serpentine in Unst, but rare near Ollaberry. 



Jiiniperus sibirica Burgsd. B. H. Only one plant was seen 

 on the granite debris of the lower part of Ronas Hill in the ascent 

 from CoUa Firth ; I made it out to be /. nana Willd. 



Sparganitim natans L. U. Loch of Cliff. The specimens I 

 got were 5| ft. long and were not selected. 



Triglochin pahcstre L. 0. Only seen in one marshy place 

 where it was frequent. 



Potamogeton natans L. U, 0. — P. poly gonif otitis Pourr. U, 0. 

 —P. perfoliatus L. U. In Loch of Cliff. 



Schoenus nigricans L. U, Sparingly on sloping ground and 

 very much dwarfed, in moist moor-pastures on Serpentine. 



Eleocharis palustris Roem. & Schultes. U, 0. Le. 



Scirpns ccdspitosus L. Uy 0. 



Eriopliorum vaginatiini L. U. — E. polystachion L. U, 0. 



Carex dioica L. U, 0. — C. pulicaris L. U, 0. — C. echinata 

 Murr. 0. — 0. leporina L. U. — C. Goodenowii Gay. U, in 

 variety. 0.~C. panicea L. U, O.—C. pilulifcra L. U, 0.— 



Journal op Botany. — Vol. 50. [Oct. 1912.] y 



