Firs are evergreen coniferous trees belonging to the genus Abies in the family Pinaceae. There are approximately 48–56 extant species, found on mountains throughout much of North and Central America, Europe, Asia, and North Africa. The genus is most closely related to Cedrus (cedar).
Pinus nigra, the Austrian pine or black pine, is a moderately variable species of pine, occurring across Southern Europe from the Iberian Peninsula to the eastern Mediterranean, on the Anatolian peninsula of Turkey, Corsica and Cyprus, as well as Crimea and in the high mountains of Northwest Africa.
Picea abies, the Norway spruce or European spruce, is a species of spruce native to Northern, Central and Eastern Europe.
Abies nordmanniana, the Nordmann fir or Caucasian fir, is a fir indigenous to the mountains south and east of the Black Sea, in Turkey, Georgia and the Russian Caucasus. It occurs at altitudes of 900–2,200 m on mountains with precipitation of over 1,000 mm.
Abies borisii-regis is a species of fir native to the mountains of the Balkan Peninsula in Bulgaria, northern Greece, Kosovo, North Macedonia, Albania and Serbia. It occurs at altitudes of 800–1,800 m, on mountains with an annual rainfall of over 1,000 mm.
Abies alba, the European silver fir or silver fir, is a fir native to the mountains of Europe, from the Pyrenees north to Normandy, east to the Alps and the Carpathians, Slovakia, Slovenia, Croatia, Bosnia and Herzegovina, Montenegro, Serbia, and south to Italy, Bulgaria, Kosovo, Albania and northern Greece; it is also commonly grown on Christmas tree plantations in the North East region of North America spanning New England in the US to the Maritime provinces of Canada.
Abies nebrodensis, the Sicilian fir, is a fir native to the Madonie mountains in northern Sicily.
Abies grandis is a fir native to the Pacific Northwest and Northern California of North America, occurring at altitudes of sea level to 1,700 metres (5,600 ft). It is a major constituent of the Grand Fir/Douglas Fir Ecoregion of the Cascade Range.
Abies concolor, the white fir, concolor fir, or Colorado fir, is a coniferous tree in the pine family Pinaceae. This tree is native to the mountains of western North America, including the Cascade Range and southern Rocky Mountains, and into the isolated mountain ranges of southern Arizona, New Mexico, and Northern Mexico. It naturally occurs at elevations between 900 and 3,400 metres.
Abies magnifica, the red fir or silvertip fir, is a western North American fir, native to the mountains of southwest Oregon and California in the United States. It is a high-elevation tree, typically occurring at 1,400–2,700 metres (4,600–8,900 ft) elevation, though only rarely reaching tree line. The name red fir derives from the bark color of old trees.
Abies procera, the noble fir, also called red fir and Christmas tree, is a species of fir native to the Cascade Range and Pacific Coast Ranges of the northwestern Pacific Coast of the United States. It occurs at altitudes of 300–1,500 meters (980–4,920 ft).
The Fraser fir, sometimes spelled" Frasier fir, is an endangered species of fir native to the Appalachian Mountains of the Southeastern United States. They are endemic to only seven montane regions in the Appalachian Mountains.
Abies lasiocarpa, the subalpine fir or Rocky Mountain fir, is a western North American fir tree.
Abies mariesii is a fir native to the mountains of central and northern Honshū, Japan. It grows at altitudes of 750–1,900 m in northern Honshū, and 1,800–2,900 m in central Honshū, always in temperate rain forest with high rainfall and cool, humid summers, and very heavy winter snowfall.
Abies homolepis, the Nikko fir, is a fir native to the mountains of central and southern Honshū and Shikoku, Japan. It grows at altitudes of 700–2,200 m, often in temperate rain forest with high rainfall and cool, humid summers, and heavy winter snowfall.
Abies koreana, the Korean fir, is a species of fir native to the higher mountains of South Korea, including Jeju Island. It grows at altitudes of 1,000–1,900 metres (3,300–6,200 ft) in temperate rainforest with high rainfall and cool, humid summers, and heavy winter snowfall.
Abies sibirica, the Siberian fir, is a coniferous evergreen tree native to the taiga east of the Volga River and south of 67°40' North latitude in Siberia through Turkestan, northeast Xinjiang, Mongolia and Heilongjiang.
Abies religiosa, the oyamel fir or sacred fir, is a fir native to the mountains of central and southern Mexico and western Guatemala. It grows at high elevations of 2,100–4,100 metres (6,900–13,500 ft) in cloud forests with cool, humid summers and dry winters in most of its habitat regime. In the state of Veracruz, it grows with precipitation all year long. The tree is resistant to regular winter snowfalls.
Abies numidica, the Algerian fir, is a species of fir found only in Algeria, where it is endemic on Djebel Babor, the second-highest mountain in the Algerian Tell Atlas.
Abies nordmanniana subsp. equi-trojani, synonym Abies bornmuelleriana, the Turkish fir is a rare, coniferous evergreen tree native to northwest Turkey. Another common name is Uludağ fir. It is a subspecies of Abies nordmanniana. It has also been considered to be a natural hybrid between Caucasian fir and Grecian fir.
