1. Small perennial herb of cooler regions of North America with racemose purple flowers
   - purple cress

Type of: bitter cress, bittercress

• Blue Nile
• blue note
• blue orchid
• blue pea
• blue peafowl
• blue peter
• blue pickerel
• blue pike
• blue pikeperch
• blue pimpernel
• blue point Siamese
• blue pointed
• blue poppy
• blue racer
• blue riband
• blue ribbon commission
• blue ribbon committee
• blue ribbon jury
• Blue Ridge
• Blue Ridge Mountains
• blue runner
• blue sage
• blue shark
• blue skullcap
• blue sky law