Jun 22, 2011 / News / Pat Chinn-Sloan Twitter Facebook Pinterest Email June Color Appears at the Washington Park Arboretum (Part II) Acer macrophyllum ‘Kimballiae’ (cut leaf Oregon maple) Lithocarpus densiflorus (tanbark oak) Neolitsea sericea Styrax obassia (bigleaf snowbell tree) Trochodendron aralioides (wheel tree) Complete details.