Salix 'Chrysocoma' it is much hardier and more long-lived than the Babylon Willow ("Salix babylonica"). This particular cultivar is easily distinguished from the other Golden Weeping Willow ("S." × "sepulcralis") by its androgynous catkins. A weeping tree, not much more than 22m high. Bark greyish-brown, deeply fissured. Twigs very slender, at first thinly subadpressed pubescent, soon becoming glabrous. Golden- or greenish-yellow in their first year, later becoming olive-green. Catkins appearing with the leaves in April, terminal on very short, spreading, leafy, lateral shoots, peduncle and rhachis softly villose. Catkins male, female or most commonly androgynous. Salix 'Chrysocoma' "Salix" × "sepulcralis" <nowiki>'Chrysocoma'</nowiki>, or
Spathius agrili only attracted to select species of "Fraxinus" and to "Salix babylonica". In natural settings, "S. agrili" will be unlikely to encounter and parasitize non-target larvae as it does not search other tree species. This, in addition to other tests of host specificity, led to approval of the wasp for controlled releases in specific study sites in the United States for further research. Spathius agrili Spathius agrili is a parasitic non-stinging wasp of family Braconidae which is native to North Asia. It is a parasitoid of the emerald ash borer ("Agrilus planipennis" Fairmaire), an invasive species which has destroyed tens of