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

Type of: ambrosia, bitterweed, ragweed

• picornavirus
• picosecond
• picot
• picotee
• picovolt
• Picrasma
• Picrasma excelsa
• Picrasma excelsum
• picric
• picric acid
• Picris
• Picris echioides
• Pict
• Pictish
• pictograph
• pictographic
• Pictor
• pictorial
• pictorial matter
• pictorial representation
• pictorially
• pictural
• picture
• picture book
• picture card