Of the two fir species that occur in the eastern United States and Canada, the best known is the balsam fir (A. balsamea), which is a popular ornamental and Christmas tree. It may be 12 to 18 metres (about 40 to 60 feet) tall at maturity, with cones 5 to 10 cm (about 2 to 4 inches) long. Canada balsam, an oleoresin collected from pitch blisters on the balsam fir’s bark, is used to mount specimens on glass slides for microscopic examination.
Online Language Learning Tool SkELL allows users to search for phrases in sentences, collocates and similar words. These examples have been automatically selected and may contain errors.
