1. Mat-forming perennial found in cold springs of the eastern United States
   - American watercress, Cardamine rotundifolia

Type of: watercress

• superciliary arch
• superciliary ridge
• supercilious
• superciliously
• superciliousness
• supercilium
• superclass
• superclass Agnatha
• superclass Chelicerata
• superclass Gnathostomata
• superclass Myriapoda
• supercomputer
• superconducting supercollider
• superconductivity
• superconductor
• supercontinent
• supercool
• supercritical
• superego
• supererogation
• supererogatory
• superfamily
• superfamily Aphidoidea
• superfamily Apoidea
• superfamily Coccoidea