1. Old World aspen with a broad much-branched crown; northwestern Europe and Siberia to North Africa
   - quaking aspen, European quaking aspen

Type of: aspen

Encyclopedia: Populus tremula

• calque formation
• Caltha
• Caltha palustris
• caltrop
• calumet
• calumniate
• calumniation
• calumniator
• athletic training
• athletic type
• athletic wear
• athletically
• athleticism
• athletics
• athodyd
• Athol Fugard
• Athos
• Athrotaxis
• Athrotaxis selaginoides
• athwart
• Athyriaceae
• Athyrium
• Athyrium distentifolium
• Athyrium filix-femina
• Athyrium pycnocarpon