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The conifers:
Cone-bearing trees
The name "conifer" comes from Latin
and means "to bear cones." Although cones are a
common feature of most conifers, junipers and yews are two
exceptions that produce berry-like fruit.
The best method of identifying
a conifer is to look at the leaves. Conifers are usually evergreen
trees or shrubs with linear, needle-like or scale-like leaves,
though some such as larch and cypress drop their leaves in
autumn.
Among the conifers are some
of the smallest, largest and oldest living woody plants known.
The more than 500 conifer species are distributed worldwide.
Redwood: The Giant
Sequoia Sequoiadendron giganteum
is the largest living thing on the earth, and is one of the
main reasons why Yosemite National Park was preserved. Giant
Sequoias only exist in the Sierra Nevada Range and can live
to be 3,000 years old, measure up to 35 feet in diameter,
and tower to heights of 250 to 300 feet above the ground.
The 12-18 inch thick bark protects the sequoia from wildfires
and the tannin-rich sap also enhances the tree's heat tolerance
as well as protects it against insect predation.
The
Giant Sequoias sprouts from seeds the size of a flake of oatmeal.
Each egg-sized sequoia cone holds 200-300 of these seeds.
Sequoias retain the green, seedbearing cones alive on the
tree for upwards of 20-30 years. Outside forces such as fire,
insect larvae, and the Douglas squirel or chickaree help disperse
the seed. Seeds send down a small one inch taproot which must
reach mineral soil in order to sprout. From small beginings
comes the world's largest living thing.
The pines:
there are many pines found in Yosemite including
Jeffery pine, Lodgepole pine, sugar pine, and ponderosa pine.
Pacific
ponderosa pine Pinus ponderosa 
The ponderosa pine is charachterised
by 3 needles per bunch, prickly cones and bark that breaks
easily into flakes that look like puzzle pieces.
The Firs: There
are also different kinds of firs found in Yosemite: Douglas
fir, Red fir and White fir.
White
Fir Abies concolor
has
needles aranged on a plane

Douglas-Fir
Psudotsuga mensiesii
Douglas fir needles
are whorled around their branches
and the cone has "mouse tails" sticking out of the
ends
 
Incense
cedar Calocedrus decurrens
As
the name suggests, incense cedar wood is pleasantly aromatic.
One of the common uses for incense cedar wood is for pencils.
Broad-leaved
trees
California
black oak Quercus kelloggii
Miwok Indians used to grind the acorns
of the black oak to make an acorn flour. The acorns provided
a large percentage of the protein in their diet.
Canyon
live oak
Quercus chrysolepis
this is the only oak that has leaves
that do not shed in the winter
California Laurel Umbellularia
californica
The
laurel tree is in the bay family, and can be used in flavoring
soups and other foods. The laurel leaves are very aromatic
when crushed.
Manzanita: Arctostaphylos
Manzanita
is the hardest wood in the SIerra Nevadas and burns very hot.
The Miwok prefered using manzanita wood to heat the rocks
which cooked their acorn mush and would also use the leaves
to quench their thirst, as they stimulate salivation.
ferns

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