Salix 'Boydii' is named after Dr William Boyd, who found two plants in the Angus hills that have never been located again. This one (the other is the remarkably compact Sagina boydii) is a very dwarf willow, which has the structure of a tree, but comfortably fits into a trough or a raised bed. It is probably a hybrid of Salix lanata and S. reticulata, and has softly hairy, grey-green leaves, like the first of these, but is as dwarf as the second. It is hard to come by, as it is slow-growing, and can only be propagated by cuttings, all derived from that original collection.

Dwarf slow-growing alpine willow with silvery grey catkins.