Douglas-Fir

Pseudotsuga menziesii: Douglas-Fir

Edward F. Gilman and Dennis G. Watson

Pseudotsuga menziesii 'Fastigiata': 'Fastigiata' Douglas-Fir

Edward F. Gilman and Dennis G. Watson

Pseudotsuga menziesii var. glauca: Rocky Mountain Douglas-Fir

Edward F. Gilman, Dennis G. Watson, Ryan W. Klein, and Deborah R. Hilbert

A UF/IFAS numbered Organism ID.