Pine Valley is named for the locally unique stand of Jeffrey pine ( Pinus jeffreyi ) found along Pine Valley Creek, a seasonal drainage in the foothills of the Laguna Mountains in central San Diego County.

Vegetation in the basin is dominated by a mixed conifer forest of Jeffrey pine ( Pinus jeffreyi ), lodgepole pine ( P. contorta ), white fir ( Abies concolor ), and red fir ( A. magnifica ).

* Pinus jeffreyi

This distinguishes Whitebark Pine and relatives from the Lodgepole Pine ( Pinus contorta ), with two needles per fascicle, and Ponderosa Pine ( Pinus ponderosa ) and Jeffrey Pine ( Pinus jeffreyi ), which both have three per fascicle ; these three all also have a persistent sheath at the base of each fascicle.

In the Sierra Nevada of California, western tanager occurred at a higher density in a open-canopied ( 602 trees > 10 cm dbh / ha ) mixed-conifer stand consisting of Jeffrey pine ( Pinus jeffreyi ), lodgepole pine ( P. contorta ), white fir, and incense-cedar compared to a closed-canopied ( 994 trees > 10 cm dbh / ha ) mixed conifer stand of incense-cedar and white fir.

Occupied coniferous habitats include mixed conifer, California red fir ( A. magnifica ), and eastside pine forests which are composed of ponderosa pine and / or Jeffrey pine ( Pinus jeffreyi ).

Pinus jeffreyi

Jeffrey Pine, Pinus jeffreyi, in the Siskiyou Mountains of northwest California, growing on serpentine group | serpentine

The cone of Pinus jeffreyi, showing the distinctive inward-pointing barbs.

Pinus jeffreyi

Pinus jeffreyi

Pinus jeffreyi

Pinus jeffreyi

Pinus jeffreyi

Pinus jeffreyi

az: Pinus jeffreyi

es: Pinus jeffreyi

pt: Pinus jeffreyi

The vegetation includes oak woodlands and forests of Jeffrey Pine ( Pinus jeffreyi ) and Coulter Pine ( Pinus coulteri ).

The National Forest also contains some of old growth, with: Jeffrey Pine ( Pinus jeffreyi ) forests and mixed conifer forests ( Coast Douglas-fir ( Pseudotsuga menziesii var.

The Forest contains some of old growth, which includes Lodgepole Pine ( Pinus contorta ), Jeffrey Pine ( Pinus jeffreyi ), and White Fir ( Abies concolor ).

* Jeffrey Pine ( Pinus jeffreyi )

menziesii ), Ponderosa Pine ( Pinus ponderosa ), and White Fir ( Abies concolor ) forests, Jeffrey Pine ( Pinus jeffreyi ) forests, and Lodgepole Pine ( Pinus contorta ) forests.

It consists largely of Jeffrey Pine ( Pinus jeffreyi ) forests, although old-growth Coast Redwood ( Sequoia Sempervirens ), Coast Douglas-fir ( Pseudotsuga menziesii var.

The most abundant trees in these forests are Lodgepole Pine ( Pinus contorta ) and Jeffrey Pine ( Pinus jeffreyi )

menziesii ), Ponderosa Pine ( Pinus ponderosa ), and White Fir ( Abies concolor )), Jeffrey Pine ( Pinus jeffreyi ) forests, Red Fir ( Abies magnifica ) forests, and Lodgepole Pine ( Pinus contorta ) forests are the most common types.

Conifer forests are predominant, chiefly Anatolian black pine ( Pinus nigra ), Cedar of Lebanon ( Cedrus libani ), Taurus fir ( Abies cilicica ), and juniper ( Juniperus foetidissima and J. excelsa ).

Heinrich Göppert named the common amber-yielding pine of the Baltic forests Pinites succiniter, but as the wood does not seem to differ from that of the existing genus it has been also called Pinus succinifera.

Pinus, the yellow or hard pine group

The Yezo ( or Yeddo ) spruce ( Picea jezoensis ), the Sakhalin fir ( Abies sachalinensis ) and the Dahurian larch ( Larix gmelinii ) are the chief trees ; on the upper parts of the mountains are the Siberian dwarf pine ( Pinus pumila ) and the Kurile bamboo ( Sasa kurilensis ).

Suillus tomentosus, a fungus, produces specialized structures, known as tuberculate ectomycorrhizae, with its plant host lodgepole pine ( Pinus contorta var.

American beech ( Fagus grandifolia ), shortleaf pine ( Pinus echinata ), pitch pine ( P. rigida ), Virginia pine ( P. uirginiana ), Ozark chinkapin ( Castanea ozarkensis ), eastern redcedar ( Juniperus virginiana ), bluejack oak ( Quercus incana ), southern red oak ( Q. falcata ), blackgum ( Nyssa sylvatica ), and winged elm ( Ulmus alata ) also grow in association with chinkapin oak.

The first settlers found abundant ponderosa pine ( Pinus ponderosa ) and Douglas-fir trees.

The bark of some trees is edible ; in Sweden and Finland, pine bread is made from rye to which the toasted and ground innermost layer of pine bark is added, the Sami people of far northern Europe used large sheets of Pinus sylvestris bark that were removed in the spring, prepared and stored for use as a staple food resource and the inner bark was eaten fresh, dried or roasted.

In the pine forests, Montezuma Pine ( Pinus montezumae ) is generally predominant, with Hartweg's Pine ( Pinus hartwegii ) and Pinus teocote in dry areas with shallow soils.

However it is more tolerant than yellow-poplar ( Liriodendron tulipifera ), black cherry, and shortleaf pine ( Pinus echinata ).

Scots Pine ( Pinus sylvestris ) is a species of pine native to Europe and Asia, ranging from Scotland, Ireland and Portugal in the west, east to eastern Siberia, south to the Caucasus Mountains, and as far north as well inside the Arctic Circle in Scandinavia ( including Sápmi ).

They have been observed feeding on pine ( Pinus roxburghii ) needles, an unexplained behaviour that cannot be for obtaining nutrition.

* Potosi Pinyon ( Pinus culminicola ), a species of pine tree native to northeast Mexico

The extinct pine species Pinus matthewsii has been described from Pliocene sediments in the Yukon areas of the refugium.

The isthmus is mostly covered by coniferous forests formed by Scots pine ( Pinus sylvestris ) and Norway spruce ( Picea abies ), with numerous lakes ( e. g. Lake Sukhodolskoye and Lake Glubokoye ) as well as small grass low moors and Sphagnum peat bogs.

The bristlecone pines are a small group of pine trees ( family Pinaceae, genus Pinus, subsection Balfourianae ) that are thought to reach an age far greater than that of any other single living organism known, up to nearly 5, 000 years.

* Rocky Mountains bristlecone pine Pinus aristata in Colorado, New Mexico and Arizona