Salix × calodendron Wimm.

Of uncertain parentage, thought by Wimmer to be S. dasyclados × S. caprea. It occurs here and there in Britain, probably always planted, and is worthy of cultivation for its handsome catkins. Also known only as a female is S. × stipularis Sm., with more slender leaves, whiter and velvety beneath. The specific epithet refers to the very large stipules of the strong shoots, which are lanceolate, tapered, and about 1 in. long. It was apparently widely distributed early in the last century as S. viminalis, under which name it was sent to the botanical artist Sowerby by several growers when the English Botany was being prepared. Further details will be found in an article by R. D. Meikle published in Watsonia, Vol. 2 (1952), pp. 243–8.

These osier-sallow hybrids, despite their handsome catkins, are too robust and too coarse in foliage to be acceptable in any but the largest garden. But, because of their vigorous and tall growth, they are useful for quickly providing shelter for choicer things, or as a temporary screen.