CONTRIBUTIONS TOWARDS A FLORA OF CAITHNESS 251 



Polemonium eoeruleum. — Near Thurso ; Dick's herbarium. On a 

 moor on the middle of Dunnet Head ; see Report of Scot. Alp. 

 Club, by Dr. Craig, in "Trans. Edin. Society," 1889, p. 379. 



Convolvulus sepium. — R. Brozvn, I.e. 



f Anehusa sempervirens. — R. Brown, I.e. 



Veronica Anagallis. — R. Brown, I.e. 



var. anagalliformis, Boreau. — Dunnet, W. F. Miller. 



Euphrasia Rostkoviana, var. borealis. Townsend, IV. F Miller ! 

 Along the coast. 



Salsola Kali. — Sandy shore, Reay, W. F. Miller ! Freswick Bay, 

 Mr. Peach. 



[Chenopodium Bonus-Henrieus. — "Very common in some places 

 along the shore," fide R. Brown, l.c. — Some error?] 



Rumex sanguineus. — R. Brown, l.c. 



Salix einerea x aurita. — ( x S. lutescens, Kerner), Caithness, E. F. 

 Linton, fide Dr. B. White. 



Salix repens, var. argentea. — Dunnet Hill, F. W. Miller ! 



[Hippophae rhamnoides. — Abundant at Reay, Dr. Davidson, in 

 litt. 10th August 1887. Some mistake?] 



Typha latifolia. — Duran, 1863, R. Dick. 



Potamogeton nitens, var. latifolius. Tisel. 



P. natans, var. laneeolatus. Fieber. Thurso River, Gra?it, 

 Ha7ibury. 



P. heterophyllus, Schreb., var. graminifolius. — Thurso River, 

 Grant I 



Luzula Forsteri, — R. Brown, l.c. When Dr. Brown reported this to 

 the Edinburgh Society, naturally enough doubt was expressed 

 (January 12th, i860). In November of the same year Dr. 

 Brown, in a second communication, remarked that he "had in 

 company with Mr. Drummond very carefully examined speci- 

 mens of the plant from the locality, both by comparison with 

 English specimens and with published descriptions, and I believe 

 it to be the true plant." May not the explanation be, that some 

 other species, neither pilosa nor Forsteri, was gathered. Un- 

 fortunately, I have failed to trace the specimens. 



Potamogeton plantagineus. — This fails to reach mid-Scotland, fide 

 certain published records (Argyle ?) ; but it reaches the pro- 

 vinces of Blekinge and Gotland in Sweden ; so that there is no 

 great improbability that it may be found in the north of Scotland. 

 Robert Dick's specimens, seen by Mr. Grant, are said to be 

 polygonifolius ; I have not yet seen them myself. 



