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Fir

Fir is any of the species of conifers belonging to the genus Abies included in the Pinaceae (or pine) family. These large trees, although closely related to cedars, can be distinguished from other conifers by their soft cones that perch upright like candles. Unlike the paired needles of spruce and bunched, cluster-like needles of pine trees, fir needles attach singly to the twigs with the arrangement resembling a small suction cup. Several fir species, including the balsam fir, are used as ornamental trees.

Types of Fir Trees

Scientific Classification

Kingdom Plantae
Clade Tracheophytes
Division Pinophyta
Class Pinopsida
Order Pinales
Family Pinaceae
Subfamily Abietoideae
Genus Abies

List of Different Types of Fir Trees

The genus Abies includes 48-56 species of true firs that are classified into nine extant sections and one extinct section. Other coniferous trees such as Douglas fir, joint fir, and hemlock fir are also called firs, but they are not true firs because they belong to different genera like Pseudotsuga, Ephedra, and Tsuga. The various sections of fir trees along with the species are given below:

Section Abies

  • Silver fir (Abies alba)
  • Sicilian fir (Abies nebrodensis)
  • Bulgarian fir (Abies borisii-regis)
  • Greek fir (Abies cephalonica)
  • Caucasian fir or Nordmann fir (Abies nordmanniana)
  • Spanish fir (Abies pinsapo)
  • Algerian fir (Abies numidica)
  • Syrian fir (Abies cilicica)

Section Balsamea

  • Fraser fir (Abies fraseri)
  • Balsam fir (Abies balsamea)
  • Subalpine fir (Abies lasiocarpa)
  • Siberian fir (Abies sibirica)
  • Sakhalin fir (Abies sachalinensis)
  • Korean fir (Abies koreana)
  • Khinghan fir (Abies nephrolepis)
  • Veitch’s fir (Abies veitchii)

Section Grandis

  • Giant fir or grand fir (Abies grandis)
  • White fir (Abies concolor)
  • Durango fir (Abies durangensis)
  • Jalisco fir (Abies flinckii)
  • Guatemalan fir (Abies guatemalensis)

Section Momi

  • Taiwan fir (Abies kawakamii)
  • Nikko fir (Abies homolepis)
  • Min fir (Abies recurvata)
  • Momi fir (Abies firma)
  • Baishanzu fir (Abies beshanzuensis)
  • Manchurian fir (Abies holophylla)
  • Shensi fir (Abies chensiensis)
  • Pindrow fir (Abies pindrow)
  • Ziyuan fir (Abies ziyuanensis)

Section Amabilis

  • Pacific silver fir (Abies amabilis)
  • Maries’ fir (Abies mariesii)

Section Pseudopicea

  • Delavay’s fir (Abies delavayi)
  • Faber’s fir (Abies fabri)
  • Forrest’s fir (Abies forrestii)
  • Bhutan fir (Abies densa)
  • East Himalayan fir (Abies spectabilis)
  • Farges’ fir (Abies fargesii)
  • Fanjingshan fir (Abies fanjingshanensis)
  • Flaky fir (Abies squamata)

Section Nobilis

  • Red fir (Abies magnifica)
  • Noble fir (Abies procera)

Section Bracteata

  • Bristlecone fir (Abies bracteata)

Section Oiamel

  • Hickel’s fir (Abies hickelii)
  • Sacred fir (Abies religiosa)

In addition to the abovementioned fir species, there are several cultivars, including ‘Glauca’, ‘Revoluta’, ‘Nana Compacta’, ‘Pendula’, ‘Loggerhead’, ‘Little Jon’, and ‘Stairii’.

Fir Tree

Quick Information

Tree Type Evergreen coniferous
Identification Height: 33-262 ft

Leaves: Needle-like, flattened, two white lines on the bottom, about 1 in long

Trunk Diameter: 1 ft 8 in-13 ft 1 in

Bark: Smooth, gray, turns rough and scaly with maturity

Cones: Cylindrical, upright, about 3-10 in long, brown or purple

Seeds: Winged

Branches: Rigid, erect or horizontal, densely packed with needles

Crown: Usually conical

Distribution Much of North America, Central America, Europe, North Africa, and Asia
Habitat Occur in mountainous regions
USDA Hardiness Zone 3-9
Growth Rate Usually slow and varies from 1 ft to 49 ft depending on the species
Lifespan Can range from 50 years to 300 years, some species may live for 400-500 years
Growing Conditions Sunlight: Full sun to partial shade

Soil: Well-drained, sandy, acidic, loamy

Water: Moderate to high

Drought Tolerance Moderate
Diseases & Pests Phytophthora root rot and Neonectria canker caused by a genus of oomycetes and fungus respectively
Reproductive System Monoecious
Propagation From seeds
Wildlife Value Monarch butterflies reside in sacred fir trees, native to Mexico and Guatemala, during their fall migration from the US and Canada, caterpillars of several moth species use fir as food
Uses Wood is used as pulp for manufacturing rough timber and plywood; balsam, Fraser, Nordmann, and noble firs make great Christmas trees; East Himalayan fir is used in Ayurvedic medicine as a cough suppressant
IUCN Conservation Status Species like the Sicilian fir and Baishanzu fir are listed as critically endangered, while Fraser’s fir is considered endangered

Interesting Facts

  • Parts of the Himalayan fir can be used for producing incense. Its needles are used for producing essential oil that helps in treating rheumatism.
  • The grand fir is considered one of the tallest and fastest-growing fir species.
  • Since the Fraser fir is similar to the balsam fir in appearance, it is referred to as ‘she-balsam’.

References

  1. https://www.thoughtco.com/identify-the-firs-1341855
  2. https://www.thespruce.com/twelve-species-of-fir-trees-3269663
  3. https://oregonstate.edu/trees/conifer_genera/ spp/ true_fir_spp.html
  4. https://www.cabi.org/isc/abstract/  20093311542
  5. https://www.iucnredlist.org/species/32101/ 2810241

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