1. Large slow-growing deciduous tree of the eastern United States having stout spreading branches and leaves with usually 7 rounded lobes; yields strong and durable hard wood
   - Quercus alba

Type of: white oak

• genus Strongylodon
• genus Strophanthus
• genus Stropharia
• genus Struthio
• genus Struthiomimus
• genus Strymon
• genus Sturnella
• genus Sturnus
• genus Stylomecon
• genus Stylophorum
• genus Styphelia
• genus Styracosaurus
• genus Styrax
• genus Subularia
• genus Suillus
• genus Suksdorfia
• genus Sula
• genus Sundacarpus
• genus Suricata
• genus Surnia
• genus Sus
• genus Swainsona
• genus Swertia
• genus Swietinia
• genus Sylvilagus