ON THE FLORA OF SHETLAND 167 



Sub-sp. III. R. Friesianus, Rouy and F., form R. vulgatus, Jord. 

 D. near Spiggie, L. Burn between Lerwick and Grimista. 

 Estwick Bum, Ollaberry (R.) ; form R. Friesianus, Jord. 

 By the Gluss Burn, near Ollaberry (R.). 



Those named by M. Rouy are marked (R.). I have only given 

 a few of the known localities. Sub-sp. I. is common on the 

 lower hill slopes and on low ground, generally where the soil 

 is light and dryish. Sub-sp. II. affects natural pasture and 

 meadow lands at low elevations ; it has a tendency to be 

 gregarious, but does not form such dense masses as the next. 

 It is local, but fairly common. Sub-sp. III. frequents the banks 

 of the lowland burns, and frequently forms dense masses a yard 

 in length. The three sub-species appear to me to be fairly 

 separable, and to differ both in habit and in habitat, in leaf 

 characters and in root characters. The distinctions founded 

 on the beak of the fruit have not, so far, appeared to me so 

 reliable. 



Cochlearia micacea, Marshall. U. Baltasound, W. A. Shoolbred 

 (Marshall in " Journ. Bot." 1895). I have also gathered it on 

 the Hill of Hamar. 



Subularia aquatica, L. S. This proves to be common ; but as most 

 of the lochs have gradually shelving bottoms, and the plant 

 does not grow where there is a possibility of drought, it is only 

 seen on wading out some distance. 



Cardamine hirsuta, L. S. Rocks by the Vaara Burn, by Burga 

 \Vater, and rocks west above Hamari Water. Conf. 



*Elatine hexandra, DC. S. A few scraps floating in Kirkiegarth 

 Loch, Walls, amid a mass of derelict Callitnche. I could 

 not find the plant growing, but the loch contains so much 

 decomposed peat in a state of suspension that it is often im- 

 possible to see the bottom. The pieces found bore a few half- 

 ripe capsules. 



Hypericum pulchrum, L. S. A curious colour variation occurred 

 on the hills above the Lochs of Hostigates. The flowers were 

 cream-coloured, or rather just the colour known to artists as 

 Naples yellow. In consequence of this change in the body 

 colour of the petals, the red splashes on their underside were 

 pure lake, instead of the usual rather orange red. 



*Erodium cicutarium, L'Her. D. "... Sandwick Parish. . . . 

 The soil sandy, produces plenty of Geranium cicutarium, not 

 observable anywhere else, either here or in Orkney." Low's 

 "Tour" (1774). Sandy ground near the sea, Levenwick. 

 The two places lie a few miles apart on the opposite sides of 



