### Instruction: Which of the following are deciduous trees?

Abies concolor
Acer rubrum
Acer saccharinum
Cornus florida
Gleditsia triacanthos
Picea glauca
picea pungens
Picea abies
Pinus strobus
Quercus rubra
### Response: Of the species listed, Acer rubrum, Acer saccharinum, Gleditsia triacanthos, Quercus rubra, and Cornus florida are deciduous trees.