CONTRIBUTIONS TOWARDS A FLORA OF CAITHNESS 251 



Polemonium eceruleum. Near Thurso ; DicKs 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. Brown, I.e. 



t Anehusa sempervirens. R. Brown, I.e. 



Veronica Anagallis. R. Brown, I.e. 



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



Euphrasia Rostkovlana, var. borealis. Townsend, W. 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,"yfo/<? R. Brown, Lc. Some error?] 



Rumex sanguineus. R. Brown, I.e. 



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. loth August 1887. Some mistake?] 



Typha latifolia. Duran, 1863, R. Dick. 

 Potamogeton nitens, var. latifolius. Tisel. 



P. natans, var. laneeolatus. Fieber. Thurso River, Grant, 

 H anbury. 



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



Grant ! 



Luzula Forsteri, R. Brown, I.e. When Dr. Brown reported this to 

 the Edinburgh Society, naturally enough doubt was expressed 

 (January i2th, 1860). 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. 



