Salix sepulcralis group Salix sepulcralis group The "Salix sepulcralis" group is a cultivar group containing all cultivars of hybrids between "Salix alba" and "Salix babylonica". The "sepulcralis" or × "sepulcralis" trees are sometimes referred to as white weeping willow or glaucous weeping willow in reference to the mixed appearance from the parent species. It was first described by L. Simonkai in 1890 from trees growing in Romania. The group contains both weeping and nonweeping cultivars, though the best-known of its cultivars is 'Chrysocoma', the most widely grown weeping tree.. Some of the cultivars are hybrids of "S. babylonica" var. "matsudana" 'Tortuosa' and have
Salix fragilis frequently with the type. It is a smaller shrubby tree, rarely exceeding tall, with completely hairless leaves up to 9 cm long and 2–3 cm broad. According to some botanists, it is a distinct species (treated as "Salix decipiens" Hoffm.), with, in this view, "S. fragilis" then being a hybrid between "S. decipiens" and "S. alba". Some other botanists regard "S. decipiens" as itself being a hybrid between "S. fragilis" and "S. triandra". Little evidence supports either of these suggestions. It readily forms natural hybrids with white willow "S. alba" in Europe and Asia, the hybrid being named "Salix" ×