Fraser fir
Endangered Appalachian fir named for botanist John Fraser.
Abies fraseri, called Fraser's fir or simply Fraser fir, is an endangered conifer found only in the Appalachian Mountains of the southeastern United States. It exists in 48 distinct populations across seven mountain regions within this range. The tree was named for Scottish botanist John Fraser (1750–1811), who collected many plant specimens there; his surname is sometimes misspelled as "Frasier," "Frazer," or "Frazier."
In the past, it was also known as "she-balsam" because resin could be "milked" from blisters on its bark, unlike the "he balsam" (red spruce). Another common name, southern balsam fir, can cause confusion with the closely related balsam fir (Abies balsamea). In fact, some botanists have treated Fraser fir as a subspecies or variety of balsam fir, and a natural hybrid between the two is sometimes recognized as Abies × phanerolepis.
This small evergreen typically reaches 10 to 15 meters (30–50 feet) tall, rarely up to 25 meters (80 feet), with a trunk diameter of 50–75 cm (20–30 inches). Its crown is conical, with straight branches that are horizontal or angled upward up to 40 degrees; the crown is dense in youth and more open with age. The bark is thin, smooth, and grayish brown, covered with resinous blisters on young trees, becoming fissured and scaly as the tree matures. The needle-like leaves are arranged spirally but twisted at the base to form two rows on each side of the twig, with few or none below. They are 10–23 mm long, flat, flexible, and rounded or slightly notched at the tips. The upper surface is dark to bluish-green, often with a small patch of stomata near the tip, while the underside has two silvery white stomatal bands. The needles have a strong fragrance similar to turpentine. The cones are erect, cylindrical, 3.5–7 cm long (rarely 8 cm), and dark purple, turning pale brown when mature. They are often resinous, with long, reflexed bract scales in green, yellow, or pale purple. The cones disintegrate 4–6 months after maturity to release winged seeds.
Fraser fir is monoecious, with male and female cones on the same tree. Cone buds usually open from mid-May to early June. Female cones grow mostly near the top of the crown and at the ends of branches, while male cones are below them but still in the upper half of the crown. Seed production can begin at 15 years old.
Quick Facts
- Genus
- Abies
- Parent
- Abies sect. Balsamea
- Species
- fraseri
Facts from the source article.
Lore & Background
Abies fraseri is closely related to Abies balsamea (balsam fir), and has occasionally been treated as a subspecies or variety of that species. Some botanists regard the variety Abies balsamea var. phanerolepis as a natural hybrid with Abies fraseri, denominated Abies × phanerolepis. The species was named after Scottish botanist John Fraser, whose name is sometimes misspelled 'Frasier', 'Frazer', or 'Frazier'. In the past, it was also known as 'she-balsam' because resin could be 'milked' from its bark blisters, in contrast to the 'he balsam' (Picea rubens, red spruce) which could not be milked.
Reader's Guide
Fraser's fir is an endangered species restricted to high elevations in the southeastern Appalachian Mountains, from 1,200 m to the top of Mount Mitchell at 2,037 m. It grows in acidic, moist, well-drained sandy loam, often mixed with red spruce. The species has been severely damaged by the non-native balsam woolly adelgid from Europe, which killed over 80 percent of mature trees. However, by the late 1990s, the adelgid population had decreased, and a study of the Great Smoky Mountains National Park showed that as of 2020, the number of adult trees had increased over the previous 30 years. Despite this, the future of the species remains uncertain, with threats including climate change and the adelgid. Fraser's fir is widely used as a Christmas tree due to its dense pyramidal form, strong limbs, soft needles, dark blue-green color, pleasant scent, and excellent shipping characteristics. It has been used more times as the White House Christmas tree than any other tree. North Carolina produces the majority of Fraser's fir Christmas trees, and in 2005 the North Carolina General Assembly made it the official Christmas tree of the state.
Did You Know?
- Fraser's fir is named after Scottish botanist John Fraser (1750–1811).
- Over 80 percent of mature Fraser's fir trees have been killed by the balsam woolly adelgid from Europe.
- The species is endemic to the Appalachian Mountains, growing in 48 populations on seven montane regions.
Frequently Asked Questions
What is Fraser fir?
Fraser fir (Abies fraseri) is a coniferous tree found only in the Appalachian Mountains of the southeastern United States. It usually stands 10 to 15 meters tall, with rare individuals reaching around 25 meters.
Who is Fraser fir named after?
The species honors Scottish botanist John Fraser (1750–1811), who gathered plant specimens in the region during his career. His surname is often misspelled in casual writing as 'Frasier,' 'Frazer,' or 'Frazier.'
Where exactly does Fraser fir grow in the wild?
All 48 known wild populations are confined to seven mountain areas spanning southwestern Virginia, western North Carolina, and eastern Tennessee. No naturally occurring stands exist outside this narrow Appalachian corridor.
Why is Fraser fir considered endangered?
Its extremely limited range, restricted to a small stretch of the southeastern Appalachians, makes it highly vulnerable to habitat loss, disease, and shifting climate conditions. This narrow geographic footprint is the primary driver behind its Endangered conservation status.
What does the nickname 'she-balsam' refer to?
The name comes from the practice of 'milking' resin out of blisters on the tree's bark, a trait that set it apart from red spruce, which was called 'he balsam.' Fraser fir is also commonly known as southern balsam fir.
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