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
Micrurapteryx salicifoliella arbusculoides", "Salix babylonica", "Salix bebbiana", "Salix brachycarpa", "Salix exigua", "Salix glauca", "Salix integra", "Salix interior", "Salix lasiandra", "Salix longifolia", "Salix monticola", "Salix novae-angliae", "Salix planifolia" and "Salix scouleriana"). They mine the leaves of their host plant. The mine is found on the upperside of the leaf, sometimes covering the entire leaf area. It is a flat upperside blotch, initially greenish but later turning brown. The larva chews a hole through the bottom of the mine and exits through it to pupate. The cocoon is often spun on the upperside of a leaf, parallel to its long axis. Micrurapteryx salicifoliella Micrurapteryx