1. Distinguished by its columnar fastigiate shape and erect branches
   - Lombardy poplar

Type of: black poplar, Populus nigra

• Mariotte's law
• mariposa
• mariposa lily
• mariposa tulip
• Mariposan
• marital
• marital aid
• marital bed
• marital communications privilege
• marital relationship
• marital status
• mariticide
• maritime
• Maritime Alps
• maritime law
• Maritime Provinces
• Maritimes
• marjoram
• mark
• Mark Anthony
• Mark Antony
• Mark Clark
• mark down
• Mark Hopkins
• mark of Cain