1. Aspen with a narrow crown; eastern North America
   - bigtooth aspen, bigtoothed aspen, big-toothed aspen, large-toothed aspen, large tooth aspen, Populus grandidentata

Type of: aspen

• irrecoverably
• irrecusable
• irredeemable
• irredeemably
• irredenta
• irredentism
• irredentist
• irreducible
• irreducibly
• irrefragable
• irrefutable
• irrefutably
• irregardless
• irregular
• irregularity
• irregularly
• irrelative
• irrelevance
• irrelevancy
• irrelevant
• irrelevantly
• irreligion
• irreligionist
• irreligious
• irreligiousness