1. Erect plant with blue-violet flowers in rings near tips of stems; Idaho to Utah and Wyoming
   - Platte River penstemon

Type of: wild flower, wildflower

Part of: genus Penstemon, Penstemon, Pentstemon

• air-to-surface
• air-to-surface missile
• airborne
• airborne patrol
• airborne transmission
• airbrake
• airbrush
• airburst
• airbus
• aircraft
• aircraft carrier
• aircraft engine
• aircraft landing
• aircraftman
• aircraftsman
• aircrew
• aircrewman
• airdock
• airdrome
• airdrop
• Aire
• Aire River
• aired
• Airedale
• Airedale terrier