358 db. p. BtrcHANAN white's 



though restricted by the difference in the period of flowering of 

 the species. Leaf-specimens of the form Trevirani bear an evi- 

 dent resemblance to those of Balix rubra ; but it is, as mentioned 

 above, with those of the forms undulata and lanceolata that they 

 are more likely to be confounded. Besides the difference in the 

 serration of the leaves, as already stated, distinctions in the female 

 inflorescence are also described ; but these are not all to be relied 

 on. The catkins are sometimes, but by no means always, smaller 

 and slenderer, nor are the scales always darker-coloured. When 

 the capsule is pubescent, that affords a ready mark of distinc- 

 tion from lanceolata ; but Wimmer says that it is more usually 

 glabrous though " punctulato-scabr a ;" the pedicel is shorter, and 

 the style often longer and more slender. In the 3 the sta- 

 mens vary from 2 to 3. 



I- The form b. hippoph'defolia has much similarity to a. Tre- 

 virani ; but makes a smaller bush, with smaller and narrower 

 leaves, smaller and more slender catkins, and smaller pubescent 

 capsules. The leaves of Trevirani are described by Wimmer as 

 glabrous, and those of MppopJide folia as pubescent when young ; 

 but in his examples of Trevirani the young leaves, at least, show 

 pubescence. 



The form c. mollissima is, in its typical condition, a very dif- 

 ferent-looking plant from either a or 6, and might readily be 

 passed over as a form of S. Smithiana (with which, indeed, Smith 

 at first confounded it), from the resemblance of the leaves to 

 some states of that plant, and from the aspect of the catkins. I* 

 is, I suppose, on account of this form that Andersson has placed 

 " multiformis " amongst the Vinimales, and not amongst the Tri- 

 andrce. From its Continental distribution the form mollissima 

 might be expected to occur in Britain, but it has apparently not 

 yet been detected. 



Though I have, in a measure, indicated the distinctions between 

 the various recognized forms of the triandra-viminalis hybrid, I 

 do not think that in it, more than in other hybrids, should varietal 

 names be retained. Whilst the named forms, as described, seem to 

 have a certain amount of stability, many specimens (including even 

 those published by Wimmer himself) cannot well be placed in any 

 of them, and though there has not yet been found such a complete 

 series — connecting the two parents — as other hybrids afford, this 

 is probably only on account of the rarity of the plant. Of all the 

 forms, lanceolata is both the commonest and the least liable to 

 variation ; but it is doubtful whether it occurs anywhere in a 













































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