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Pinus balfouriana

Foxtail pine
Pinus balfouriana John Muir Trail.jpg
Scientific classification
Kingdom: Plantae
Division: Pinophyta
Class: Pinopsida
Order: Pinales
Family: Pinaceae
Genus: Pinus
Subgenus: Strobus
Section: Parrya
Subsection: Balfourianae
Species: P. balfouriana
Binomial name
Pinus balfouriana
Balf.
Pinus balfouriana range map 1.png
Natural range of Pinus balfouriana

Pinus balfouriana (foxtail pine) is a rare high-elevation pine that is endemic to California, United States. It is closely related to the Great Basin and Rocky Mountain bristlecone pines, in the subsection Balfourianae. The two disjunct populations are found in the southern Klamath Mountains (subspecies balfouriana) and the southern Sierra Nevada (subspecies austrina). A small outlying population was reported in southern Oregon, but was proven to have been misidentified.

P. balfouriana is a tree to 10–20 m (30–70 ft) tall, exceptionally 35 m (115 ft), with a trunk up to 2 m (7 ft) across. Its leaves are needle-like, in bundles of five (or sometimes four, in the southern Sierra) with a semi-persistent basal sheath, and 2–4 cm (1–1 12 in) long, deep glossy green on the outer face, and white on the inner faces; they persist for 10–15 years. The cones are 6–11 cm (2 124 12 in) long, dark purple ripening red-brown, with soft, flexible scales each with a 1-millimeter (116-inch) central prickle.

P. balfouriana occurs in the subalpine forest at an elevation of 1,950–2,750 m (6,400–9,020 ft) in the Klamath Mountains, and at 2,300–3,500 m (7,500–11,500 ft) in the Sierra Nevada. In the Sierra Nevada, Foxtail pines are limited to the area around Sequoia and Kings Canyon National Parks. In both areas, it is often a tree line species.


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Wikipedia

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