362 The Scottish Naturalist. 



(700 ft.) on the south side of the Perthshire Ochils in one 



place. Here it is unassociated with any other alpine 



plants, and its occurrence is remarkable. 

 S. Myrsinites L. Another alpine species, widely spread, but ' 



not common, in the mountain districts. 

 S. herbacea L. A very diminutive shrub, not uncommon on 



the higher mountains. 

 S. reticulata L. Almost restricted, in Britain, to the richer 



hills of Perthshire, Forfarshire, and Aberdeenshire, where 



it is locally common. 



III. Synandrse. 

 S. purpurea L. Locally common on the banks of streams, but 

 not of universal distribution. 

 This concludes the species — 1 7 in number — that have been de- 

 tected in our district ; and, as has been already said, the list in- 

 cludes all the British species. We have now to enumerate the 

 hybrid forms that have been found. 



S. decipiens Hoffm. (triandra x fragilis). Not very uncom- 

 mon near Perth. I have also seen a specimen from near 

 St. Andrews, in Fifeshire. It probably occurs in the other 

 counties also. 



S. Subdola B.W. (triandra x alba). A very few plants near 

 Perth. Not yet found anywhere else. 



S. undulata Ehrh. (triandra x viminalis). Locally common 

 near Perth ; and Professor Trail has found it near Aber- 

 deen. All our specimens belong to the form called S. 

 lanceolata Sm. 



S. hexandra Ehrh. (pentandra x alba). A small bush (of 

 which I have not yet seen the flowers), on Restenet Moss, 

 near Forfar, may be this hybrid. The only certain British 

 example seen by me is an old one found near Edinburgh. 



S. viridis Fr. (fragilis x alba). I have found a few specimens 

 in Perthshire. It ought to occur in the other counties 

 also. 



S. lutescens A. Kern, (cinerea x aurita). Common in Perth- 

 shire, and probably elsewhere. 



S. Reichardti A. Kern, (cinerea x Caprea). Rare, but of wide 

 distribution, as is also 



3. Capreola A. Kern, (aurita x Caprea). 



