1. Birthwort of the eastern United States woodlands
   - Virginia serpentaria, Virginia serpentary, Aristolochia serpentaria

Type of: Aristolochia clematitis, birthwort

• unreflective
• unreformable
• unreformed
• unrefreshed
• unregenerate
• unregenerated
• unregistered
• unregretful
• unregretting
• unregularity
• unregulated
• unrehearsed
• unrejoicing
• unrelated
• unrelatedness
• unrelaxed
• unreleased
• unrelenting
• unrelentingly
• unreliability
• unreliable
• unreliableness
• unreliably
• unrelieved
• unremarkable