1. Perennial marsh herb with pink to mauve flowers; southeastern United States
   - Hypericum virginianum

Type of: St John's wort

• Thalarctos maritimus
• thalassaemia
• thalassaemia major
• thalassemia
• thalassemia major
• thalassic
• Thalassoma
• Thalassoma bifasciatum
• thalassotherapy
• thaler
• Thales
• Thales of Miletus
• Thalia
• Thaliacea
• Thalictrum
• thalidomide
• Thalidone
• thallium
• thalloid
• Thallophyta
• thallophyte
• thallophytic
• thallus
• thalmencephalon
• thalweg