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408 



DR. F. BUCHANAN WHITE'S 



xSalix strepida (Schleich.), Forbes. (S. nigricans X S. 

 cinerea.) 



Andersson uses the name S. puberula, Doll, for the hybrid 

 formed by 8. cinerea with 8. nigricans, because he and Wimmer 

 think that 8. vaudensis (Schleich.), Forbes, is, though probably 

 the same thing, somewhat doubtful. "Wimmer is also of opinion 

 that 8. strepida (Schleich.), Forbes, 1. 100, bears more resemblance 

 to the same hybrid than to anything else, though Andersson 

 refers it to 8. nigricans. 



Of 8. strepida I have received specimens from Kew Gardens 

 which are sufficiently like Forbes's figure, and which seem, with- 

 out doubt, a hybrid between cinerea and nigricans. Consequently, 

 since the name is earlier than either vaudensis or puberuh, I 

 have adopted it for this hybrid. S.firma, Forbes, t. 1 



Wimmer 



hich 



vaudensis, 



Forbes, 1. 117, are, judging from specimens cultivated at Kew, 

 forms of the same hybrid. 



Like other compound willows, 8. strepida is subject to con- 

 siderable variation, increased in this case by the variability of its 

 parents. In addition to this, the intimate alliance, on the one 

 hand, of nigricans to phylicifolia, and, on the other, of Caprea 

 and aurita to cinerea, augments the difficulty of satisfactorily 

 placing every specimen, and makes it impossible to draft such a 

 description as will serve to identify the hybrid in every case. 

 At the same time 8. strepida, in many of its forms, has a facies 



own 



student to a correct discrimination of the species. 



Wimme 



/3. vaudensis (Forbes), and y. nitida, "Wi 



From the examination of a number of specimens, I am unable to 

 see any sufficient reason for maintaining these varietal names. 



In its best forms, strepida combines the characters of its parents, 

 but not unfrequently it exhibits more relationship with one than 

 with the other. In some of its states the leaves so much resemble 

 those of nigricans, that it is only by the shorter style and stigmas 

 that any connection with cinerea can be suspected. In others the 

 leaves, catkins, and capsules are so like those of cinerea that the 

 relation with nigricans (or perchance with phylicifolia) is shown 

 only by the rather long styles. 



In Continental Europe 8. strepida has been recorded from a 









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