1. Perennial erect herb with white flowers; circumboreal
   - Polemonium boreale

Type of: polemonium

• onomastics
• onomatomania
• onomatopoeia
• onomatopoeic
• onomatopoeical
• onomatopoetic
• Onondaga
• Ononis
• Ononis repens
• Ononis spinosa
• Onopordon
• Onopordon acanthium
• Onopordum
• Onopordum acanthium
• Onosmodium
• onrush
• Onsager
• onset
• onshore
• onside
• onslaught
• onstage
• Ontarian
• Ontario
• ontic