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Pinus jeffreyi occurs from southwest Oregon south through much of California (mainly on the eastern side of the Sierra Nevada), to northern Baja California in Mexico. It is a high-altitude species; in the north of its range, it grows widely at 1,500 to 2,100 m (4,900 to 6,900 ft) altitude, and at 1,800 to 2,900 m (5,900 to 9,500 ft) in the south of its range.
The Jeffrey pine beetle is monophagous on the Jeffrey pine tree, a dominant yellow pine and most concentrated in areas ranging from Southwestern Oregon to Baja California to western Nevada. [4] In its native range, it causes a significant amount of damage as large numbers of tree mortality have been documented.
Jeffrey pine wood and ponderosa pine wood are sold together as yellow pine. [6] Both kinds of wood are hard (with a Janka hardness of 550 lbf (2,400 N)), but the western yellow pine wood is less dense than southern yellow pine wood (28 lb/cu ft (0.45 g/cm 3 ) versus 35 lb/cu ft (0.56 g/cm 3 ) for shortleaf pine).
In general, this classification emphasized cone, cone scale, seed, and leaf fascicle and sheath morphology, and species in each subsection were usually recognizable by their general appearance. Pines with one fibrovascular bundle per leaf, (the former subgenera Strobus and Ducampopinus ) were known as haploxylon pines , while pines with two ...
Bull pine is a common name for several species of North American “yellow pine” trees — Genus Pinus, Section Trifoliae (“American hard pines”) — especially large, or unusually large and isolated, specimens of the following. Shortleaf pine (Pinus echinata) Slash pine (Pinus elliottii) Jeffrey pine (Pinus jeffreyi)
white fir, sugar pine, incense cedar, ponderosa pine, red fir, and Jeffrey pine Redwood Mountain Grove is the largest grove of giant sequoia ( Sequoiadendron giganteum ) trees on earth. [ 1 ] It is located in Kings Canyon National Park and Giant Sequoia National Monument on the western slope of California 's Sierra Nevada .
In 1984, Kinerk sold The Library Store, and founded The Natural Gardening Research Center, a garden supply catalog specializing in biological control of garden pests. The name was confusing to some so, in 1998, it was renamed Gardens Alive! It was named after a catalog called Plants Alive! that had recently gone out of business. It was printed ...
Subfamily Abietoideae (Abies, Cedrus, Pseudolarix, Keteleeria, Nothotsuga, and Tsuga): cones are annual, without a distinct umbo, the cone scale base is narrow, with the seeds partly visible in abaxial view, the seed has resin vesicles, the seed wing holds the seed tightly in a cup, leaves have primary stomatal bands abaxial only.
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