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:''For other meanings of 'fir' or 'FIR' see FIR (disambiguation) . redirect|Fir Tree|the County Durham town|Fir Tree, County DurhamTaxobox| name = Firs | fossil_range = Fossil range|49|0cite journal|author=Schorn, Howard|author2=Wehr, Wesley| date=1986| title=Abies milleri, sp. nov., from the Middle Eocene Klondike Mountain Formation, Republic, Ferry County, Washington| journal=Burke Museum Contributions in Anthropology and Natural History| volume=1 | pages = 1–7 | image = Abies koreana (szyszki).JPG | image_width = 230px | image_caption = Korean Fir ( Abies koreana ) cone and foliage | regnum = Plant ae | divisio = Pinophyta | classis = Pinophyta|Pinopsida | ordo = Pinales | familia = Pinaceae | genus = Abies | genus_authority = Philip Miller|Mill. | subdivision_ranks = Species | subdivision = See text Firs ( Abies ) are a genus of 48–55 species of evergreen Pinophyta|conifers in the family Pinaceae . They are found through much of North and Central America, Europe, Asia, and North Africa, occurring in mountain s over most of the range. Firs are most closely related to the Cedrus|cedars ( Cedrus ); Douglas-firs are not true firs, being of the genus Pseudotsuga .
All are tree s, reaching heights of 10–80 m (30–260 ft) tall and trunk diameters of 0.5–4 m (2–12 ft) when mature. Firs can be distinguished from other members of the pine family by their needle-like leaf|leaves , attached to the twig by a base that resembles a small suction cup; and by erect, cylindrical Conifer cone|cones 5–25& nbsp;cm (2–10 in) long that disintegrate at maturity to release the winged seed s. Identification of the species is based on the size and arrangement of the leaves, the size and shape of the cones, and whether the bract scales of the cones are long and exserted, or short and hidden inside the cone.
Classification
' Section Abies (central, south & east Europe, Asia Minor)
* Abies alba —Silver Fir
* Abies nebrodensis —Sicilian Fir
* Abies borisii-regis —Bulgarian Fir
* Abies cephalonica —Greek Fir
* Abies nordmanniana —Nordmann Fir or Caucasian Fir
** Abies nordmanniana subsp. equi-trojani —Kazdagi Fir, Turkish Fir
** Abies nordmanniana subsp. bornmülleriana —Uludag Fir
* Abies pinsapo —Spanish Fir
** Abies pinsapo var. marocana —Moroccan Fir
* Abies numidica —Algerian Fir
* Abies cilicica —Syrian Fir
' Section Balsamea (Taiga|boreal Asia and North America, and high mountains further south)
* Abies fraseri —Fraser Fir
* Abies balsamea —Balsam Fir
** Abies balsamea var. phanerolepis —Bracted Balsam Fir
* Abies lasiocarpa —Subalpine Fir
** Abies lasiocarpa var. arizonica —Corkbark Fir
** Abies lasiocarpa var. bifolia —Rocky Mountains Subalpine Fir
* Abies sibirica —Siberian Fir
** Abies sibirica var. semenovii —
* Abies sachalinensis —Sakhalin Fir
* Abies koreana —Korean Fir
* Abies nephrolepis —Khinghan Fir
* Abies veitchii —Veitch's Fir
** Abies veitchii var. sikokiana —Shikoku Fir
' Section Grandis (western North America to Mexico and Guatemala, lowlands in north, moderate altitudes in south)
* Abies grandis —Grand Fir or Giant Fir
** Abies grandis var. idahoensis —Interior Grand Fir or Giant Fir
* Abies concolor —White Fir
** Abies concolor subsp. lowiana —Low's White Fir
* Abies durangensis —Durango Fir
** Abies durangensis var. coahuilensis —Coahuila Fir
* Abies flinckii —Jalisco Fir
* Abies guatemalensis —Guatemalan Fir
' Section Momi (east & central Asia, Himalaya, generally at low to moderate altitudes)
* Abies kawakamii —Taiwan Fir
* Abies homolepis —Nikko Fir
* Abies recurvata —Min Fir
** Abies recurvata var. ernestii —Min Fir
* Abies firma —Momi Fir
* Abies beshanzuensis —Baishanzu Fir
* Abies holophylla —Manchurian Fir
* Abies chensiensis —Shensi Fir
** Abies chensiensis subsp. salouenensis —Salween Fir
* Abies pindrow —Pindrow Fir
* Abies ziyuanensis —Ziyuan Fir
' Section Amabilis (Pacific coast mountains, North America and Japan, in high rainfall mountains)
* Abies amabilis —Pacific Silver Fir
* Abies mariesii —Maries' Fir
' Section Pseudopicea ( Himalaya|Sino-Himalayan mountains , at high altitude)
* Abies delavayi —Delavay's Fir
** Abies delavayi var. nukiangensis —
** Abies delavayi var. motuoensis —
** Abies delavayi subsp. fansipanensis —
* Abies fabri —Faber's Fir
** Abies fabri subsp. minensis —
* Abies forrestii —Forrest's Fir
* Abies chengii —Cheng's Fir
* Abies densa —Bhutan Fir
* Abies spectabilis —East Himalayan Fir
* Abies fargesii — Farges' Fir
* Abies fanjingshanensis —Fanjingshan Fir
* Abies yuanbaoshanensis —Yuanbaoshan Fir
* Abies squamata —Flaky Fir
* Abies webbiana -Talispatra
' Section Oiamel (Central Mexico, at high altitude)
* Abies religiosa —Sacred Fir
* Abies hickelii —Hickel's Fir
** Abies hickelii var. oaxacana —Oaxaca Fir
' Section Nobilis (western United States|U.S. , high altitudes)
* Abies procera —Noble Fir
* Abies magnifica —Red Fir
** Abies magnifica var. shastensis —Shasta Red Fir
' Section Bracteata ( California coast)
* Abies bracteata —Bristlecone Fir
' Section Incertae sedis
* Abies milleri —(Extinct) Early Eocene
Uses and ecology
The wood of most firs is considered unsuitable for general timber use, and is often used as pulp or for the manufacture of plywood and rough timber. Because this genus has no insect or decay resistance qualities after logging, it is generally recommended for construction purposes as indoor use only (e.g. indoor drywall framing). This wood left outside cannot be expected to last more than 12 to 18 months, depending on the type of climate it is exposed to. It is commonly referred to by several different names, including North American timber, SPF (spruce, pine, fir) and whitewood.
Nordmann Fir , Noble Fir , Fraser Fir and Balsam Fir are popular Christmas tree s, generally considered to be the best for this purpose, with aromatic foliage that does not shed many needles on drying out. Many are also decorative garden trees, notably Korean Fir and Fraser Fir, which produce brightly coloured cones even when very young, still only 1–2 m (3–6 ft) tall. Other firs can grow anywhere between 30 and 236 feet tall. Fir Tree Appreciation Day is June 18.
Firs are used as food plants by the caterpillar s of some Lepidoptera species, including Chionodes|Chionodes abella (recorded on White Fir ), Autumnal Moth , Korscheltellus|Conifer Swift (a pest of Balsam Fir ), The Engrailed , Grey Pug , Mottled Umber , Pine Beauty and the tortrix moth s Cydia illutana (whose caterpillars are recorded to feed on European Silver Fir cone scales) and Cydia duplicana|C. duplicana (on European Silver Fir bark around injuries or canker ).
Abies webbiana or Talispatra is used in Ayurveda as an antitussive drug.
Notes
reflist
Bibliography
Philips, Roger. Trees of North America and Europe, Random House, Inc., New York ISBN 0-394-50259-0, 1979.
External links
commonscat|Abies
http://www.conifers.org/pi/ab/index.htm Abies at The Gymnosperm Database
http://www.pinetum.org/cones/ABIEScones.htm Michael P. FRANKIS CONE COLLECTION: Abies at the Arboretum de Villardebelle—images of cones of selected species
