

412 DR. F. BUCHANAN WHITENS 



described as glabrous. The scales vary in colour, pubescence, 

 length, and shape (roundish, obovate, and oval) ; the style from 

 nearly none to almost one third the length of the ovary, and, 

 with the stigmas, in being thick or thin ; and the capsule in the 

 amount of pubescence and colour. With all these variations 

 there is, however, usually no difficulty in easily recognizing the 

 species. 





X Salix Dicksoniana, 8m. (S. phylicifolia X S. Arbus- 



o 



cula.) 



i Wimmer was inclined to think that 8. humilis, 

 Willd., might be a hybrid between S. phylicifolia and S. Arbuscula, 

 he does not, in the i Salices Europaeae/ go the length of describing 

 it as such, and Andersson says that it is a modification only of 



i folia 



ifolia 



to occur ; but if they do they must be very rare. As mentioned 

 under 8. phylicifolia, it seems quite within the bounds of possi- 

 bility that 8. Dicksoniana, Sm., is such a hybrid. Though origi- 

 nally found in "Scotland" by Dickson, and in Breadalbane by 

 "Winch, only cultivated specimens appear to be now known, 

 and the characters of these, as well as those given in Smith's 

 description, are in many ways intermediate between phylicifolia 

 and Arbuscula. As already stated (p. 399), there is some doubt 

 whether Smith's plant and Forbes's are the same ; but the proba- 

 bility seems to be that they are only different conditions of one 

 species, and I have therefore retained Smith's name of 8. Dick- 



soman a. 



As regards the specimens I have seen, the leaves might belong 



„*A.1_ Qi 7 7* • si 1 • *^. " « 



if( 



whole nearer the latter species. From S. Arbuscula, also, has been 

 derived the small stature of the plant (" a foot high," Smith 5 

 " 18 inches to 2 feet," Forbes), the small catkins ( $ ) appearing 

 with the leaves and with leafy peduncles, the small capsules, 



shortish 



colour 



ifolia 



longly-pedicelled capsules with stronger pubescence, and stouter 

 styles and stigmas. The scales are somewhat intermediate in 

 colour and structure. 



Both Smith (who places it, in Engl. Fl, next S. carinata) 















: 





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fl 

















