220 



SAGINA BOYDII. 



The only figure of " C. groenlandica" that I have been able to 

 discover (besides that in English Botany, representing a different 

 plant), is a fragmentary and uncharacteristic one in Reiehenbach, 

 which may or may not be right, but is practically valueless. 



C. groenlandica, as it occurs in N. Scotland, appears to be always 

 prostrate, and is a small plant, rarely four inches across. The 

 leaves are thick and fleshy, nearly or quite veinless, very many, 

 soon withering, varying in shape from reniform to almost triangular- 

 ovate (then recalling small forms of C. anglica), often truncate but 

 scarcely cordate at the base. The flowers much resemble those of some 

 of our alpine forms, but the blade of the petals is shorter (scarcely 

 longer than broad), more abruptly narrowed into a long, distinct 

 claw. The pods are as a rule broadly ovate, but vary a good deal 

 in shape ; a remark "which applies to some other species, such as 

 C. danica and C. officinalis. They are reticulate-veined when 

 perfectly ripe ; I find the same thing in a Greenland example. 



I suspect that this, like many other so-called " annuals, " is 

 often biennial. It has retained its character in my garden, as have 

 C. danica, C. officinalis, C. alpina, and another mountain form which 

 I believe to be distinct. 



Besides specimens from two Greenland localities, there are in 



the Kew collection plants of true C. groenlandica from Nova Zembla, 

 and, apparently, from Siberia (although no locality is given, they 

 are queried as "Cochlearia lenensis?"). 



Both Don's and Goodenough's specimens, thus named, are what 

 we now call C. alpina. C.fenestrata E. Br. and C. arctica Schlecht. 

 Fries are also quite distinct from the subject of the present sketch. 



SAGINA BOYDII. 

 (Plate 326, B.) 



We 



side, Melrose, for an opportunity of figuring this very interesting 

 plant. It was found by him in Braemar in 1878, and was collected 

 among a number of other specimens, not attracting notice until the 



return home. He does 



not remember gathering it, and the exact locality is therefore 

 doubtful; but his impression is that it was obtained upon Ben 

 A'an, a hill in the deer-forest of Invercauld, somewhat difficult of 

 access, and not often visited by botanists. Since then Mr. Boyd has 

 had the plant in cultivation, but it has never produced fertile seed, 

 and^has been multiplied by division. 



White described the plant at length in the 



of the Botanical Society of 



It 



xxuui wmtu, wun nis permission, we reproduce his description. -- 

 has not hitherto been figured, and will be seen to be extremely 

 different m appearance from S. procumbens, of which it has been 

 suggested to be a form. 



