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Transcript
Trees of the CSRA
Eco-Meet 2016
Study Packet
Georgia State Standards Met
S7CS10. Students will enhance reading in all curriculum areas by Building vocabulary knowledge.
S7L1. Students will investigate the diversity of living organisms and how they can be compared scientifically.
South Carolina State Standards Met
6-1.3 Classify organisms, objects, and materials according to their physical characteristics by using
a dichotomous key
6-2.2 Recognize the hierarchical structure of the classification (taxonomy) of organisms (including the seven major levels or
categories of living things—namely, kingdom, phylum, class, order, family, genus, and species).
6-2.3 Compare the characteristic structures of various groups of plants (including vascular or nonvascular, seed or spore-producing,
flowering or cone-bearing, and monocot or dicot).
6-2.7 Summarize the processes required for plant survival (including photosynthesis, respiration, and transpiration).
7-2.4 Explain how cellular processes (including respiration, photosynthesis in plants, mitosis, and waste elimination) are essential to
the survival of the organism.
Trees are living organisms that are a part of the plant kingdom. There are many different types of trees in the
CSRA, and this packet is designed to help you learn about the native trees of the area and provide you with the
knowledge necessary to identify trees in the wild, or in your neighborhood, on your own.
As a part of your Eco-Meet test, you will be provided with a copy of the 1998 edition of A Field Guide to
Eastern Trees: Eastern United States and Canada, Including the Midwest by George A. Petrides, which is a part
of the Peterson Field Guide Series. You will be asked to use the field guide to identify a number of trees based
on images and examples of various features of the trees. The rest of the test will consist of questions drawn
from the study packet.
The Life of a Tree
There are seven stages in a tree’s life:
Seed – Sprout – Seedling – Sapling – Mature – Decline – Snag
1
Seeds
The outer layer of the seed is called the seed coat. Inside the
seed coat one can find the embryo and food that will support
its growth. The embryo is made up of one or more cotelydons,
which will become the first leaves of the plant; the radicle,
which will form roots; and the plumule, which will form the
shoot once the seed germinates and the embryo begins to grow
and breaks free of the seed coat.
While all seeds are made up of an embryo, food source, and
seed coat, seeds come in a variety of shapes, colors, and sizes.
Some seeds are found in fruit. Trees that house their seeds
within fruit are known as angiosperms. Most people are
familiar with fruits like apples and oranges that have seeds
inside, but many do not realize that acorns and the outer shell
of sunflower seeds are also fruits.
2
So what is the deal with fruit? Flowering trees produce fruit, and fruit actually comes from the flower.
Flowers and fruit are a part of the flowering plant’s reproductive cycle. Flowers vary from plant to plant, and
some plants have both male and female structures within a single flower, while other plants have separate male
and female flowers growing on the same plant, and yet other varieties produce entirely separate male and
female plants. The male structures of flowers are called the stamen and produce pollen. The female structures
form the pistil (or carpel) and include the stigma, style, ovary, and ovules.
3
A flower is pollinated when pollen from the stamen finds its way to the stigma, is carried to the ovary through
the style by a pollen tube, and successfully fertilizes the ovules. Pollen can be transferred to the stigma in a
number of ways: by bees, other insects and animals, the wind, and even humans.
Flowers vary from tree to tree and plant to plant. The diagram above shows a basic flower form, but some trees
have flowers that look much different and may not contain each of the structures included in the diagram. These
flowers are considered incomplete.
4
Catkins – Flowers of Oaks and Willows
5
Male catkins and female flowers of Black Oak
After pollination the flower goes through a transformation. The recognizable parts of the flower, like the petals,
wither. The ovary grows and becomes fruit, while the ovules inside of it develop into seeds.
Angiosperms and Fruits
Angiosperms house their seeds in fruits. When most people think of fruit they think about the fruits that humans
eat, but there are many different types of fruit and not all of them are edible. There are two major categories of
fruit: fleshy fruits and dry fruits. Most of the fruits that people easily recognize as fruits are fleshy fruits, but
not all fleshy fruits are created equal. There are several different types of fleshy fruits, including berries, drupes,
pomes, and hesperidiums. Apples, oranges, bananas, and cherries are all fleshy fruits. Dry fruits also come in a
variety of shapes and sizes, including samaras and nuts. Acorns, samaras or “helicopter seeds”, and “sweetgum
balls” are all dry fruits. The chart below describes some common types of fruits you may encounter in attempts
identify trees. The definitions and examples below are from The Seed Site.
Dry Fruits
Type of Fruit
Samara
Definition
an independent
dry fruit which
has part of the
fruit wall
extended to
form a wing
Examples
Images
Maple,
Ash,
Elm
Maple
Nut
a large single
hardened
achene
Acorns,
Chestnuts
A – White Oak Acorn B- Red Oak Acorn
Fleshy Fruits
Pomes
a fleshy fruit
Apples,
with a thin
Pears
skin, not
formed from
the ovary but
from another
part of the plant
6
Crabapples
Fleshy Fruits
Drupe
a single fleshy
fruit with a
hard stone
which contains
the single seed
Cherries,
Peaches,
Plums,
Olives
Cherries
Berry
a single fleshy
fruit without a
stone, usually
containing a
number of
seeds
Kiwi,
Banana,
Coffee,
Tomato
Hesperidium
a berry with a
tough, aromatic
rind
Oranges,
Grapefruit,
Lemons,
Limes
Kiwi
Oranges
Gymnosperms
Gymnosperms are plants that produce seeds, but do not produce flowers or fruit. Because the seeds are not
enclosed in fruit, they are considered naked. Common gymnosperms include pines, firs, junipers, other conifers,
and gingkos. The reproductive structures of many gymnosperms are known as cones, or strobili. The rather
large brown cones found on many pine trees, for example, are actually the female strobili. Attached to the top of
each of the cone scales are two ovules. The ovules, once pollinated, will develop into seeds. The smaller more
tightly packed cones are male and release pollen.
7
Male Loblolly Pine Cones
8
Female Loblolly Pine Cone
Seed Dispersal and Suitable Environments
Soil
Water
Air
In order to grow and mature into trees, seeds must find their way
to an environment where all of their needs are met. Initially, most
seeds need soil, air, and the appropriate amount of water to
begin the germination process and sprout. Some seeds also need
Sunlight
Space
Temperature
to be exposed to the right temperatures or amount of light
before they will germinate. Seeds will lay dormant until all of
their needs are met, and many are eaten, crushed, or rot before they have a chance to grow. After seeds
germinate, they also require the proper amount of space to grow into a tree. Imagine if every acorn from a white
oak tree germinated and sprouted directly below the tree from which they fell. Eventually, the seedlings would
become too crowded and would be unable to grow to their proper height. They would compete for space above
and below ground as their roots and branches grew, as well as resources like light, water, and oxygen.
How do seeds, which are immobile on their own, get away from their parent tree to grow?
Exploding Fruit – Some seed capsules burst open, and the force of this “explosion” tosses the seeds far enough
from their parent plant to grow.
Animals – There are many ways that animals can assist in the dispersal of seeds. The first is by eating the fruit.
Many animals cannot properly digest seeds, and after eating fruit and moving on throughout their ecosystem,
they may excrete the seeds in a more appropriate environment. Other fruits are hooked or barbed, and as an
animal passes under or by a plant, the fruit, with its seeds inside, get caught
in the animal’s fur or feathers and may travel with the animal for days
before falling or being scratched or brushed off. Other animals, like
squirrels and humans, actively take seeds and deposit them in new
locations.
Wind – Some fruits enable seeds to be transported by the wind. Samaras
provide seeds with wings and instead of dropping straight to the ground,
the seeds to stay airborne longer, fluttering and twirling farther away from
their parent plant. Other fruits, known as cypsela, have feathery tufts that
act like parachutes and float in the breeze, carrying seeds away. One
example of a plant with cypselae is the dandelion.
9
The Sprout and Photosynthesis
Once the seed has germinated and sprouted, the sprout sends roots into the ground to absorb the water,
nutrients, and oxygen the tree will need to continue to grow once the food from the seed is gone. At the same
time the shoot will grow and break through the surface of the soil. Once this occurs, the sprout will develop its
first “true” leaves and begin to make food through a process called photosynthesis.
Photosynthesis is a process that allows plants to turn water, light, and carbon dioxide into oxygen and glucose.
The glucose, a simple sugar, is then converted to fuel by the plant. Photosynthesis happens in the chloroplasts
of plant cells. Chloroplasts contain the pigment chlorophyll which makes leaves green. Chlorophyll also
enables the process of photosynthesis. Chlorophyll absorbs energy from sunlight, and that energy enables the
transfer of electrons between molecules resulting in the following chemical reaction:
6H2O
+
6CO2

C6H12O6
+
6O2
six molecules of water and six molecules of carbon dioxide, using energy from sunlight,
changes into one molecule of glucose and six molecules of oxygen.
The hydrogen found in water transfers to carbon dioxide to form glucose and oxygen is created as a byproduct.
Glucose is a simple sugar that plants are able to convert to the energy they need to continue to grow and
eventually reproduce.
Growth and Maturity
As the sprout continues to grow it becomes taller and thicker around and starts to take on more tree like
characteristics. Now a seedling, the little tree adds more leaves and its roots continue to develop and spread just
below the surface of the ground.
Seedlings are considered saplings once they have attained a height of approximately 4.5 feet and a diameter of
1-4 inches. Saplings cannot reproduce, but will eventually grow into mature trees that reproduce.
As a tree ages, it can experience different stresses, just like humans. Not having enough access to sunlight,
being planted too close to other trees and plants, disease, insects, fires, and droughts are just a few of the things
that can stunt the growth of a tree or cause it to go into decline.
In the final stage of its lifecycle, the standing dead tree is known as a snag.
Parts of the Tree
1. Roots
The roots support trees and their health in three different ways.



Roots help hold the tree up and in place,
Roots absorb water and nutrients from the soil that
keep the tree healthy, and
Roots store extra food.
Roots are covered in tiny root hairs that help them absorb more
water. These hairs do not last for very long and are replaced every
few days. The ends of the roots are protected by a small growth
called a calyptra or root cap.
Some trees have roots that grow deep into the ground. The roots
of other trees spread out just below the surface of the soil. The
roots of some trees that grow in swamps will actually grow above
the water and soil! The Bald Cypress is just one example of this
phenomenon. Cypress trees have “knees:” sections of their roots
that poke out above the water.
Bald Cypress with knees
A few trees even have aerial roots that grow out of their branches
and down into the ground. These roots help to prop the tree up and
provide extra nutrients.
10
2. Trunk
Just like the roots, the trunk is an integral part of the structure of the tree and supports the trees growth and
health in a number of ways



The trunk is the backbone of the tree and bears the weight of the tree’s leaves, branches, and fruit.
The bark on the trunk protects the tree from pests, weather, and fires.
The trunk carries water and nutrients from the roots to the leaves and vice versa.
At the center of the trunk lies the heartwood. This is the strongest part
of the trunk and really is the backbone of the tree. Surrounding the
heartwood is the xylem. The xylem moves the nutrients and water
absorbed from the ground by the roots to the rest of the tree. On the
outside of the xylem is a very small layer called the cambium. This
small layer of cells actually produces the new growth for the tree in the
form of new cambium, xylem, and phloem. Just below the bark next to
the cambium is the phloem. The phloem takes the food (glucose)
produced by the leaves to the rest of the tree.
11
3. Branches and Leaves (Crown)
The branches and the leaves form the crown of the tree. Leaves produce energy (food) for the tree through
photosynthesis and the branches transport the food to the rest of the tree. Different types of trees branch out in
different types of ways, giving each type of tree a unique silhouette (or overall shape).
Identifying Mature Trees
Different types of trees have many features which are helpful in identification. These include: leaf type and
arrangement, twig and bud types, bark, flower, fruit, size, and silhouette. Many people use field guides to
look up the various features of trees in order to identify them. In order to use these guides successfully,
however, one needs to know about some common features of trees and how they are described by botanists.
You will be using A Field Guide to Eastern Trees to identify trees on your Eco-Meet test. The following
discussion of leaves is based on the categorization of trees established by George A. Petrides in the field guide
and will help you become more familiar with different types of leaves and the structure of the guide.
Leaves
Trees can be broken down into two major groups based on their leaves: Trees with needle or scalelike leaves
and those with broad leaves.
A. Trees with needlelike or scalelike leaves (also known as hardwoods)
Scalelike
Red Cedar or Juniperus virginiana
Needle
Virginia Pine or Pinus virginiana
B. Broad-leaved trees (also known as softwoods)
The Broad Leaf trees can be broken into five categories based on leaf arrangement on the tree’s twigs. The
following definitions will help you distinguish between the different categories of broad leaf trees:
Simple leaf – a single blade attached to a twig.
Compound leaf – generally an odd number of leaflets
are attached to the midrib of the leaf. This midrib
is joined to the twig at the stalk.
Twig – the end portion of the branch with
new growth, distinguished from leaf stalks
and midribs by the presence of buds and in
winter months, bundle scars and leaf scars,
left after leaves have fallen or been
removed.
12
Black Walnut or Juglans nigra L.
Leaf scars indicate the location where leaf stalks were once attached to the twig, and bundle scars mark the
entry points of veins into the twig. When a single leaf scar contains more than three bundle scars, this can
indicate that the leaf was compound, although this is not always the case.
B. Broad-leaved trees (also known as softwoods) Contd.
1. Trees with opposite compound leaves- compound leaves directly across from another on the
twig
13
White Ash or Fraxinus americana
2. Trees with opposite simple leaves- leaves directly across from another on the twig
14
Red Maple or Acer Rubrum
3. Trees with alternate compound leaves – compound leaves arranged at varying points, but
not directly across from each other on the twig
Shagbark Hickory or Carya alba
4. Trees with alternate simple leaves – simple leaves arranged at varying points, but not
directly across from each other on the twig
15
Sweetgum or Liquidambar styraciflua
5. Trees with parallel-veined leaves
16
Dwarf Palmetto or Sabal minor
Trees can also be identified by looking at leaf shapes, margins, and veins. The following charts provide a
glimpse of the variety of leaves found in nature. Students do not need to memorize each of these forms for the
test, but should be able to identify the terms leaf shape, leaf margin, venation, dentate, serrate, and entire.
They should understand how these differences can aide in identification.
17
The edge of the leaf is called the margin. This chart provides the scientific terms for various types of margins.
18
The veins on a leaf can also distinguish it from leaves of other similar trees. Venation is a term to used to
describe the different patterns in the veins of different types of leaves. Below is a chart that provides visual
comparison of the different types of veins.
19
Buds, Bundle Scars, and Leaf Scars
During winter months when leaves are generally absent from broadleaf trees, buds, bundle scars, and leaf scars
can be used to aide in tree identification. Careful inspection of the location of leaf scars can indicate whether the
leaves are opposite or alternate, and the number of bundle scars may indicate whether or not the leaves in
question are compound or simple.
Leaf scars indicate the location where leaf stalks were once attached to the twig, and bundle scars mark the
entry points of veins into the twig. When a single leaf scar contains more than three bundle scars, this can
indicate that the leaf was compound, although this is not always the case.
Buds also vary from tree to tree, and the number of scales, color, and size can aide in identification.
Bark
During winter months, bark can be very helpful when it comes to identifying trees. Below are some examples of
bark features that can be found in trees common to the CSRA.
Type
Color
Name
Type
Color
Name
Smooth
Light Grey
American Holly
Fibrous
Red
Cedar
Deeply Grooved/Furrowed
Dark Grey
Black Walnut
Warty
Medium Grey
Hackberry
Shaggy/Peeling
Red-brown/Orange/Black
New River Birch
Scaly
Blackish/Dark Orange
Loblolly Pine
Geographical Regions and the Types of Trees found in the CSRA
Based on physical geography, the CSRA is located on the border of
two different regions, the Piedmont and the Upper Coastal Plain.
The Fall Line separates these two regions, and while some trees can
grow in both regions, there are many that do not.
According to The University of Georgia Museum of Natural History,
the Piedmont region, located north of the Fall Line, includes “oaks,
hickories, Short-leaf Pine, and Loblolly Pine. Pines occur in the less
favorable or disturbed areas of the Piedmont. In river valleys, mixed
deciduous forests of hardwood trees such as Sweet Gum, Beech, Red
Maple, elms, and birches are found.” In contrast, the diversity of the
Coastal Plain, located south of the Fall Line, lends itself as a home to
a number of different trees:
“On well-drained soils of the Coastal Plain, the dominant plant species are Long-leaf Pine,
Loblolly Pine, and several species of oak. On poorly drained soils, the dominant species are
Long-leaf Pine and Slash Pine with a dense ground cover of Saw Palmetto, Gallberry, and Wiregrass. These plants are adapted to a humid subtropical climate of mild winters, hot summers,
high rainfall, and frequent ground fires. Where the soil is poorly drained, Pond Pines are
dominate. The Southern Mixed Hardwood community includes oaks, Sweet Gum, magnolias,
Red Bay, and Pignut Hickory. Such hardwood communities are found bordering freshwater
streams and floodplain swamps and in low, fertile areas near the coast. Wooded swamps
composed of Cypress, Tupelo, and Red Maple trees are found adjacent to swamps, ponds, and
lakes as well as along sluggish, meandering streams.”
Different types of trees have different needs with regards to the amount of water, sunlight, and type of soil in
which they can grow. These factors determine the suitability of different regions for their growth and well being
and can aide you in determining whether or not to plant a certain species in your back yard or garden.
Many types of trees can grow in Georgia and South Carolina, but not all of the trees you see as you drive down
the highway or walk through the woods grow in our area naturally. Many of these trees were brought into the
area from oversees or other parts of the country. Trees that have always grown in this part of the country and
were not introduced by people from other regions or countries are called native trees. Below is a list of native
trees, their common names, and scientific names. Students do not need to memorize this list, but being
familiar with these trees will help the students with identification on the test using their field guide. Students
should understand the difference between common names and scientific names, but do not need to memorize
each tree and its names.
Native Trees
Common Name
American Beech
American Holly
American Hornbeam
American Yellowwood
Bald Cypress
Big-Leaf Magnolia
Black Gum or Tupelo
Black Walnut
Carolina Buckthorn
Carolina Silverbell
Chestnut Oak
Downy Serviceberry
Eastern Hemlock
Eastern Redbud
Eastern Red Cedar
Florida or Southern Sugar Maple
Flowering Dogwood
Fringetree of Grancy-Greybeard
Green Ash
Laurel Oak
Live Oak
Loblolly Bay
Loblolly Pine
Longleaf Pine
Mayhaw
Mockernut Hickory
Northern Red Oak
Palmetto Palm or Cabbage Palm
Parsley Hawthorn
Pignut Hickory
Possumhaw
Post Oak
Red Maple
River Birch
Scarlet Oak
Shagbark Hickory
Shortleaf Pine
Shumard Oak
Slash Pine
Southern Magnolia
Southern Red Oak
Genus Species
Fagus grandifolia
Ilex opaca
Carpinus caroliniana
Cladrastis kentukea
Taxodium distichum
Magnolia macrophylia
Nyssa sylvatica
Juglans nigra
Frangula caroliniana
Halesia tetraptera
Quercus prinus
Amelanchier arborea
Tsuga canadensis
Cercis canadensis
Juniperus virginiana
Acer barbatum
Cornus florida
Chionanthus viginicus
Fraxinus pennsylvanica
Quercus hemisphaerica
Quercus virginiana
Gordonia Iasianthus
Pinus taeda
Pinus palustris
Crataegus aestivalis
Carya tomentosa
Quercus rubra
Sabal palmetto
Crataegus marshallii
Carya glabra
Ilex dcidua
Quercus stellata
Acer rebrum
Betula nigra
Quercus coccinea
Carya ovata
Pinus echinata
Quercus shumardii
Pinus elliottii
Magnolia grandiflora
Quercus falcata
Family (Common/Scientific)
Beech/Fagaceae
Holly/Aquifoliaceae
Birch/Betulaceae
Pea/Fabaceae
Redwood/Taxodiaceae
Magnolia/Magnoliaceae
Nyssa/Nyssaceae
Walnut/Juglandaceae
Buckthorn/Rhamnceae
Storax/Styracaceae
Beech/Fagaceae
Rose/Rosaceae
Pine/Pinaceae
Legume/Fabaceae
Juniper/Cupressaceae
Maple/Aceraceae
Dogwood/Cornaceae
Olive/Oleaceae
Olive/Oleaceae
Beech/Fagaceae
Beech/Fagaceae
Tea/Theaceae
Pine/Pinaceae
Pine/Pinaceae
Rose/Rosaceae
Walnut/Juglandaceae
Beech/Fagaceae
Palm/Palmaceae
Rose/Rosaceae
Walnut/Juglandaceae
Holly/Aquifoliaceae
Beech/Fagaceae
Maple/Aceraceae
Birch/Betulaceae
Beech/Fagaceae
Walnut/Juglandaceae
Pine/Pinaceae
Beech/Fagaceae
Pine/Pinaceae
Magnolia/Magnoliaceae
Beech/Fagaceae
Spruce Pine
Sugar Maple
Sugarberry
Swamp Chestnut Oak or Basket Oak
Sweetgum
Sycamore
Tulip Poplar or Yellow Poplar
Two-Winged Silverbell
Virginia Pine
Washington Hawthorn
Water Oak
Willow Oak
White Ash
White Oak
White Pine
Yaupon Holly
Yellow Buckeye
Pinus glabra
Acer saccharum
Celtis laevigata
Quercus michauxil
Liquidambar styraciflua
Platanus occidentalis
Liriodendron tulipifera
Halesia diptera
Pinus virginiana
Crataegus phaenopyrum
Quercus nigra
Quercus phellos
Fraxinus americana
Quercus alba
Pinus strobus
Ilex vomitoria
Aesculus flava
Pine/Pinaceae
Maple/Aceraceae
Elm/Ulmaceae
Beech/Fagaceae
Witchhazel/Hamamelidaceae
Sycamore/Platanaceae
Magnolia/Magnoliaceae
Storax/Styracaceae
Pine/Pinaceae
Rose/Rosaceae
Beech/Fagaceae
Beech/Fagaceae
Olive/Oleaceae
Beech/Fagaceae
Pine/Pinaceae
Holly/Aquifoliaceae
Buckeye/Hippocastanaceae
Invasive Trees
The trees on the list above all grow naturally in our area and other parts of the United States. There are,
however, trees and other plants that have been imported from other parts of the country and all over the world in
our area. Some of these imports are harmless, but occasionally importing trees and plants can have a negative
impact on both the environment and the human community. When this happens these plants become known as
invasive species. According to the Georgia Forestry Commission, “An invasive species is any species
(including its seeds, eggs, spores, or other biological material capable of propagation) that is not native to a
given ecosystem; and whose presence causes economic or environmental harm or harm to human health.”
The threats that these plants pose vary. Many displace native species and negatively impact the ecosystem.
Mimosas, for example, once well established, create a dense canopy that can block out sunlight and inhibit the
growth of other plants that animals and insects may rely on for food or shelter. The Tallow Tree displaces native
plants and can also change the chemical composition of the soil where it grows because of the tannins it
releases. The Tree of Heaven, or Chinese Sumac, and Chinaberry Trees also take over areas and push native
species out of their natural habitats. Both trees release chemicals that act as herbicides and help them establish
dominance over native plants. Chinaberry Trees are poisonous to humans and some other mammals, and the
Tree of Heaven can also wreak havoc in populated areas by disturbing pavement, sidewalks, and other
structures underground.
Invasive Trees
Common Name
Tallow Tree
Tree of Heaven
China Berry Tree
Princess Tree
Mimosa
Genus Species
Triadica sebifera
Ailanthus altissima
Melia azedarach
Paulownia tomentosa
Albizia julibtissin
Classification
In the 1700s a scientist named Carl von Linne, professionally known as Carolus Linnaeus, developed a system
for organizing living beings based on their common features. Linnaeus’ system placed specific types of living
things into ever broadening categories with other organisms based on a number of shared characteristics or
traits. The system is described as follows by professor Michael McDarby, “Each particular type of living thing
would be designated a species (from the same root word as "specific"). Closely-related species could be
collected within a larger grouping, a genus; related genera are grouped into a family, families into
an order, orders into a class, classes into a phylum, and phyla into a Kingdom, the biggest and most general
group.” During the 1700s, writing in Latin was the preferred method for scientists, and Latin classification
terminology is still in use today.
As an example, below is a chart outlining the classification of Live Oak trees from the United States
Department of Agriculture. Please note that some use the term division instead of phylum.
Kingdom
Subkingdom
Superdivision
Division
Class
Subclass
Order
Family
Genus
Species
Plantae – Plants
Tracheobionta – Vascular plants
Spermatophyta – Seed plants
Magnoliophyta – Flowering plants
Magnoliopsida – Dicotyledons
Hamamelididae
Fagales
Fagaceae – Beech family
Quercus L. – oak
Quercus virginiana Mill. – live oak
20
Trees and other living things will often be referred to in academic texts and field guides by both their common
name and Latin genus and species. Because common names can vary in different regions and communities,
using and being able to recognize scientific names can limit confusion. For our purposes, students should be
able to recognize the differences between scientific and common names, explain the scientific
classification system, and locate scientific and common names in field guides. They do not need to
memorize the scientific names of any trees.
Sample Questions:
Which of the following are types of fruit:
Fill in the blanks:
a)
b)
c)
d)
Pomes
Strobili
Drupes
Stigma
Using the Peterson Field Guide provide the genus and species of the tree pictured: ____________ __________
21
Bibliography
Armstrong, W.P. “Identification of Major Types of Fruit.” Wayne’s Word: An Online Textbook of Natural History.
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Photography Credits
1
Edited version of image Tree Life Cycle By jehsomwang - iStock - Getty Images via GPB.
Edited version of image By KDS444 (Own work) [CC BY-SA 3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia
Commons
3
By Mariana Ruiz LadyofHats (Own work) [Public domain], via Wikimedia Commons
4
Evelyn Simak [CC-BY-SA-2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons
5
Conrad, Jim. Last updated Sun Dec 11 2011 12:40:01 GMT-0500 (Eastern Standard Time) . Page title: Oak Flowers. Retrieved
from The Backyard Nature Website at http://www.backyardnature.net/fl_bloak.htm.
6
By Carol Michel, “Drupes, Pods, and Pomes,” May Dreams Gardens, http://www.maydreamsgardens.com/2008/09/drupes-podsand-pomes.html (accessed December 21, 2012), used with permission.
7
Image taken by en:User:Pollinator, released under GFDL 19:45, Oct 20, 2004 (UTC)
8
By Alicia Pimental from Queenstown, Maryland, United States (DSC_6552) [CC-BY-2.0
(http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons
9
By Alex Valavanis (Flickr) [CC BY-SA 2.0 (http://creativecommons.org/licenses/by-sa/2.0)], via Wikimedia Commons
10
By Randy Robertson from Newbury Park, California, USA (Branching Down) [CC BY 2.0
(http://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons
11
Modified from image by Project Learning Tree (https://www.plt.org/family-activities-tree-factory)
12
By Susan Sweeney [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
13
By Pedro Paramo (Pedro paramo) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
14
By Bmerva (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
15
By Bmerva (Own work) [CC-BY-SA-3.0 (http://creativecommons.org/licenses/by-sa/3.0)], via Wikimedia Commons
16
By Carey Minteer, University of Georgia, United States [CC-BY-3.0-us (http://creativecommons.org/licenses/by/3.0/us/deed.en)],
via Wikimedia Commons
17
By User Debivort (La bildo estas kopiita de wikipedia:en.) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0
(http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
18
By User Debivort (La bildo estas kopiita de wikipedia:en.) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0
(http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
19
By User Debivort (La bildo estas kopiita de wikipedia:en.) [GFDL (http://www.gnu.org/copyleft/fdl.html) or CC-BY-SA-3.0
(http://creativecommons.org/licenses/by-sa/3.0/)], via Wikimedia Commons
20
National Resources Conservation Service, “Quercus virginiana Mill.,” United States Department of Agriculture,
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21
By Thisisbossi (Own work) [CC-BY-SA-2.5 (http://creativecommons.org/licenses/by-sa/2.5)], via Wikimedia Commons
2