48 ON SOME SCOTTISH RUBI. 



L. Vennachar ; between Callander and Aberfoyle, in several places. 

 S. Ou Castle Hill (in' one place); Gargunnock, in good quantity. 

 Everywhere a strong handsome characteristic form. 



R. Drejeri G. Jensen. W.P. By Lochs Earn and Vennachar. 

 S. Stirling, on Castle Hill, and among rocks beyond King's Park. 

 Thus named for me by Dr. Focke, with the additional note (in 

 letter), "i?. Drejeri, I think, is exactly the same plant as the type 

 from Slesvig and Denmark." This is not quite the plant described 

 by me in Jouni. Bot. 1892, 271, under the same name, then 

 suggested for it by Dr. Focke ; that being the li. Leyaniis Rogers, 

 Loud. Cat. ed. 9, 482, a widespread and locally abundant form 

 with us, which appears to be unknown on the Continent. The 

 true R. Drejeri, as I have seen it in the living bushes in Scotland, 

 and in dried Slesvig and Holstein specimens of Messrs. Gelert's 

 and Friderichsen's collecting, differs from E. Leyanus in its dull- 

 coloured more hairy stem, its chieBy 3-nate leaves and shorthj 

 pointed roimdish or ohocate leaflets, with less formal outline looser 

 toothing and harsher greener under surface, its much longer and more 

 cylindrical panicle with hairier and more densely prickly rachis and 

 broader less attenuate sepals. Thus the shining neat look and 

 yellowish colour so chai'acteristic of B. Leyanus give place to a 

 rough shaggy look and dull brownish colour in R. Drejeri, and the 

 close alliance between them is by no means striking at first sight. 

 On the other hand, it must be owned, a few of our many widely 

 distributed Leyanus bushes (and especially some of the Welsh and 

 S. Devon ones) are in some of these particulars less distinctly 

 different ; and so, I think, that form had best be placed as a 

 strongly marked variety under i?. Drejeri. Whether the typical 

 plant of N. Germany occurs in England as well as in Scotland, I 

 cannot positively say ; but a Loxley (Yorks.) specimen that I saw 

 a few months ago (before my visit to Scotland) in the " B. New- 

 boiddii" packet in the Cambridge University Museum may, I 

 suspect, represent LI. Drejeri better than it. Newbouldii, as lately 

 understood amongst us. I may add, a very distinct-looking Irish 

 form that I have received from two independent collectors (Revs. 

 C. H. Waddell and H. W. Lett) from Saintfield and Aghaderg, 

 Co. Down, might well rank as a second variety of Drejeri, under the 

 name hibernicus, var. n., distinguished from both type and var. 

 Leyanus by its nnich laxer and more slightly armed but very 

 glandular and very lovg panicle with straighter prickles and nearly 

 patent branches, together with leaf- toothing remarkably loose and 

 siiniate, the more prominent teeth being frequently patent or 

 recurved. Its peculiar panicle is as conspicuously narrowed above 

 as in jR. fjeyanus, and its leaflets as long-pointed. The specimens 

 in my herbarium were collected in 1894 and 1895. The confident 

 restoration to our British list of typical LI. Drejeri and its ally 

 Pi. melanoxylon at the same time and from the same p-irt of 

 Scotland is remarkable. 



Radul^. 



B. radula Weihe. The only species in this large group that I 

 saw in Scotland. Locally abundant, and representmg our three 



