1. Erect perennial of north temperate zone having pinnate leaves and a few nodding flowers with a brown-purple calyx and orange and pink petals
   - water avens, purple avens, chocolate root, Geum rivale

Type of: avens

• achromatous
• achromia
• achromic
• achromous
• Achromycin
• achy
• achylia
• achylia gastrica
• acicula
• acicular
• aciculate
• acid
• acid anhydrides
• acid dye
• acid halide
• acid head
• acid hydrogen
• acid precipitation
• acid rain
• acid rock
• acid test
• acid value
• acid-base balance
• acid-base equilibrium
• acid-base indicator