White willow.
National Jewish Medical & Research Center, 1400 Jackson Street Room J326, Denver, CO 80206, USA.
Richard W
RW
Weber
D017753:Ecosystem; D011058:Pollen / Q000276:immunology*; D006255:Rhinitis, Allergic, Seasonal / Q000276:immunology; D032108:Salix / Q000033:anatomy & histology / Q000145:classification / Q000276:immunology*; D014197:Trees / Q000033:anatomy & histology / Q000145:classification / Q000276:immunology*