Definition: A plant genus in the family PINACEAE, order Pinales, class Pinopsida, division Coniferophyta. They are coniferous evergreen trees with long, flat, spirally arranged needles that grow directly from the branch.
note X ref: FIR TREE see ABIES is also available; coord with specific PLANT STRUCTURES term if pertinent; for use in therapy coord IM with PHYTOTHERAPY (IM) + disease/drug ther (IM) + PLANT PREPARATION or its indentations/ther use (IM or NIM) + specific
Other names Pseudotsugas; Firs, Douglas; Douglas Firs; Fir, Douglas; Douglas Fir
