* 



452 DE. P. BUCHANAN WHITE'S 



pollen, and finally, when empty, fuscous; leaves oblanceolate, 

 dark green and shining above, very glaucous below, soon quite 

 glabrous, but at first more or less pubescent with brownish hairs ; 

 branches slender and straight, glabrous almost from the first. 



x Salix dichroa, Doll. (S. purpurea x S. aurita.) 



To this hybrid belongs the willow published by Mr. Leefe 

 (Sal. JSxs. iii. No. 59) as "Salix Pontederana ? Schl.," and found 

 by him at Rothbury in Northumberland. 



S. dichroa is very similar to S. sordida ; but the cinerea element 

 in the latter is replaced by aurita. Mr. Leefe, who describes his 

 plant as " a small shrub with declining branches," has published 

 S specimens only ; and these agree so sufficiently well with 

 examples of the hybrid issued by Wimmer and by Kerner, that 

 there can be no doubt about their identity. Mr. Leefe found in 

 the same place a willow which he thought " might be the 

 female; " but the catkins are much deformed, being, in fact, her- 

 maphrodite monstrosities. Of this I have seen one catkin only ; 

 and from it not much can be learnt. The leaves, however, re- 

 semble those of the $ plant, but are rather nearer in character to 

 S. aurita. 



X Salix Doniana, Sm. (S. purpurea X S. repens.) 



Salix Doniana was founded by Smith (' English Flora/ iv- 

 p. 213. 47) on a willow " sent from Scotland, as British, by the 

 late Mr. George Don;" and though it has continued to be re- 

 tained in our floras, it is probable that the majority of the later 

 botanists had come to the conclusion that its claims to be con- 

 sidered British were very slight. For my own part I had, at the 

 time that this paper was read, decided to omit it from the list of 

 British Willows, because, amongst other reasons, it had not come 

 directly from Don into Smith's hands, but from Borrer, who 

 received it from George Anderson, and in the transmission from 

 hand to hand some particulars of its occurrence might have been 

 accidentally lost. But I have now the pleasure of restoring it to 

 a place in the list, having, during the past summer, found un- 

 doubtedly wild specimens on the banks of the river Tummel, near 

 Pitlochry, in Perthshire. 



The plants I found were growing with S. purpurea, and in the 

 neighbourhood of S. repens. They are distinctly intermediate in 

 character between the parents. The following notes were taken 





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