1. Coarse perennial ragweed with creeping roots of dry barren lands of southwestern United States and Mexico
   - perennial ragweed, Ambrosia psilostachya

Type of: ambrosia, bitterweed, ragweed

• rhymer
• rhymester
• rhyming
• rhyming slang
• Rhynchocephalia
• Rhynchoelaps
• Rhynchoelaps australis
• Rhyncostylis
• Rhynia
• Rhyniaceae
• rhyolite
• rhythm
• rhythm and blues
• rhythm and blues musician
• rhythm method
• rhythm method of birth control
• rhythm section
• rhythmic
• rhythmic pattern
• rhythmical
• rhythmically
• rhythmicity
• rhytidectomy
• rhytidoplasty
• RI