Myrtle. This plant, Myrtus communis, grows in the east into a tree of twenty feet in height. The myrtle was an emblem of peace and quietude; hence allusions to it are frequently introduced by the sacred writers. Isaiah 41:19; Isaiah 55:13; Zechariah 1:8-11. Branches of it were used for constructing booths and arbors at the feast of tabernacles. Nehemiah 8:15.