Download Academic Quad LOOP 1:

Walking Tour of the Trees on the Dickinson Campus
Cherry Street
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West High Street
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38) Norway Spruce (Picea abies)
Northern and central Europe; zones
3-7; 40-60 feet tall; Norway spruce at
southeast corner of Dana Hall was
measured to be 99 feet tall with a
clinometer; planted extensively by the
Civilian Conservation Corps., in the
1930s to aid reforestation efforts.
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34) Horsechestnut (Aesculus hippocastanum)
Greece, Albania, Bulgaria; 50-75 feet
tall, large tree; zones 3-7; showy white
flowers, 5-12 in. long and 2-5 in. wide
in mid-May; fruit is a spiny capsule
with one or two seeds, about 2 in. in
diameter; good wildlife tree
37) Yellow Buckeye (Aesculus flava)
Native; zones 4-8; 60-80 feet tall;
palmately compound leaf; yellow
flowers in late spring; hot climates can
produce leaf scorch causing premature
defoliation.
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33) ‘Winter King’ Hawthorn
(Crataegus viridis ‘Winter King’)
Native; 20-25 feet tall; zones 4-7; dark
green foliage, white flowers, 3/8 in.
diameter red fruit; exfoliating gray bark
on older stems exposes grays, greens
and orangish-browns; watch for thorns
36) Japanese Stewartia
(Stewartia pseudocamellia)
Japan; zones 4-7; 20-40 feet tall; 2 - 2.5
inch white flowers in mid-summer;
exfoliating bark is quite showy; insect
and disease resistant.
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28) River Birch (Betula nigra)
Native; 40-70 feet tall; zones 4-9;
medium to fast grower; bark exfoliates
into papery sheets and plates exposing
salmon-pink to reddish-brown inner
bark; resists wood boring insects,
which is present in many whitebarked
species of birch; can be used clumped
or as a single-stemmed tree
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32) Japanese Zelkova (Zelkova serrata)
Japan, Korea, Taiwan, Manchuria;
50-80 feet tall; zones 5-8; vase-shaped;
good foliage, growth habit, exfoliating;
high-quality timber species in its native
range
35) Goldenraintree (Koelreuteria paniculata)
China, Japan, and Korea; zones 5-8;
30-40 feet tall; showy yellow flowers in
mid-summer; fruit is a papery valved
capsule; transplants well; adapts very
well to adverse urban conditions.
1A
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10) Black Cherry (Prunus serotina)
Native; 50-60+ feet tall; zones 3-9; very
common over much of eastern United
States; high-value timber species,
much of the world’s highest-quality
black cherry is grown in northwest Pa.
19) Common Persimmon
(Diospyros virginiana)
Native; zones 4-9; 35-60 feet tall; bark
has distinct square blocks; edible
berries ripen after first frost; important
food source for raccoon, skunk, fox,
and deer; Dioecious, however both
sexes may be present on same tree.
27) Japanese Cryptomeria
(Cryptomeria japonica)
China, Japan; 50-60 feet tall, (can grow
to 100 feet), 20-30 feet wide; zones 5-6;
evergreen; medium growth rate; major
lumber tree in Japan; many cultivars to
choose from
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9) Hackberry (Celtis occidentalis)
Native; 40-60 feet tall, can grow to 100
feet; zones 2-9; develops corky ridges
in bark with age; fruit is a 1/3 in. dark
purple drupe favored by birds and
wildlife; medium-fast growth; performs
well in adverse conditions
18) Black Gum (Nyssa sylvatica)
Native; 30-50 feet tall; zones 3-9; slowto-medium growth rate; beautiful red
fall color; one of the first natives to
change color in the fall; wildlife use the
fruit, twigs and leaves for food; fine
specimen tree in the landscape; also
known as black tupelo
26) Sweetgum (Liquidambar styraciflua)
Native; zones 5-9; 60-75 feet tall; twigs
have star-shaped pith; star-shaped
leaf; species can be invasive in south;
fruitless cultivars are more ideal
for urban situations as fruit can be
problematic.
The self-guided walking
tour begins at the southwest
or southeast corner of the
HUB, depending on desired
loop. Look for the trees with
identifying markers, in the
approximate place indicated
on this map. Carlisle is in the
U.S. Department of Agriculture
Hardiness Zone 6.
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8) ‘Butterflies’ Magnolia (Magnolia
acuminata ‘Butterflies’)
Hybrid; zones 4-8; cross between yulan
magnolia and cucumber magnolia; 18
– 20 feet tall; deep yellow flowers prior
to leaf emergence.
17) European Beech (Fagus sylvatica)
Europe; zones 4-7; can grow up to 60
feet tall under cultivation; smooth, gray
bark resembles the hide of an elephant;
leaves emerge late and persist
into winter; more widely planted
than American beech due to higher
tolerance of urban conditions.
25) Lacebark Elm (Ulmus parvifolia)
Northern and central China, Korea,
and Japan; 40-50 feet tall; zones 4-9;
mottled bark exfoliates in patches
exposing green, gray, orange and
brown inner bark; good resistance to
DED, elm leaf beetle and Japanese
beetle; tough tree, transplants well
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7) ‘Purple Fountain’ Beech
(Fagus sylvatica ‘Purple Fountain’)
Europe; narrow, upright growth with
weeping branches to 25 feet tall; zones
4-7; purplish foliage
16) Bur Oak (Quercus macrocarpa)
Native; 70-80 feet tall; zones 2-8; large
tree, developing corky ridges on bark;
also called mossycup oak
24) Amur Corktree
(Phellodendron amurense)
Northern China, Manchuria and Japan;
30-45 feet tall; zones 3-7; medium
growth rate; older trunks develop corklike bark; usually pest-free
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6) ‘Waterfall’ Japanese Maple
(Acer palmatum ‘Waterfall’)
Japan, China, Korea; 10 feet tall, 12-14
feet wide; zones 5-8; leaf is green, of
dissected form
15) Kousa Dogwood (Cornus kousa)
Japan, Korea, China; 20-30 feet
tall, some spreading; zones 5-8;
many cultivars to choose from;
exfoliating bark; it’s true flowers are
inconspicuous, the white to rose
colored bracts are showy in about
June; fruit is a pink to red drupe, ½ to
1 in. diameter in late August through
October; fairly pest-free
23) Northern Red Oak (Quercus rubra)
Native; 60-75+ feet tall; zones 4-8; fast
grower; red fall color; very important
timber species, furniture, veneer;
wildlife favor red oak acorns
West Louther Street
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5) Eastern Hemlock (Tsuga canadensis)
Native; 40-70+ feet tall; zones 3-7;
evergreen; PA state tree; used singly or
often planted as a hedge; important for
construction timber and as a source of
tannic acid for tanning leather; hemlock
woolly adelgid, a small aphidlike insect
that feeds on hemlock is a problem
often recognized by white cottony
masses on the undersides of twigs at
the base of needles
14) Saucer Magnolia
(Magnolia x soulangiana)
Hybrid; 20-30 feet tall, often wider than
tall; zones 4-9; flowers from white to
pink to purple; can flower as soon as
2-4 feet tall; can set flower buds at
2-3 years old; many cultivars (30+) to
choose from; late frosts can devastate
spring blooms
31) Sweetbay Magnolia
(Magnolia virginiana)
Native; zones 5-9; plants in the
northern part of range grow 10-20 feet
tall, but tree can reach heights of 60
feet tall in the south; can be deciduous,
semi-evergreen, or evergreen; late
spring flowers may have a lemon
smell; leaves are green on top with a
glaucous bloom underneath, creating a
silver appearance.
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Moorelan
4) American sycamore
(Platanus occidentalis)
Native; 75-90 feet tall, massive tree;
zones 4-9; gray to green-brown lower
trunk; exfoliating upper trunks reveal
white to creamy-white patches;
anthracnose (a fungus that kills young
shoots and distorts leaves) can be an
issue; often used for butcher blocks
because of coarse and twisted grain
13) Eastern Redbud (Cercis canadensis)
Native; 20-30 feet tall; zones 4-9;
flowers rosy-red to reddish-purple
in about April; flowers at a relatively
young age (4-6 years); heartshaped leaf
22) Japanese Maple
(Acer palmatum var. dissectum)
Japan, China, Korea; 10-12 feet tall,
12-14 feet wide; zones 5-8; cutleaf
variety; many cultivars of dissected
(cutleaf) and nondissected varieties;
slow growing; excellent red fall color;
unique growth habit
30) White Oak (Quercus alba)
Native; 50-80 feet tall; zones 3-9; widespreading tree at maturity; valuable
timber and wildlife species
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3) Willow Oak (Quercus phellos)
Native; 40-60 feet tall; zones 5-9;
lanceolate, willow-like leaf; not many
serious pests
12) Weeping Willow (Salix babylonica)
Central and southern Europe, western
Siberia, central Asia; 30-50 feet
spreading; zones 2-8; 250+ species of
willows worldwide; roots easily from
cuttings; messy, but still a beautiful
tree in the right location; thrives in
wet sites
21) Katsuratree (Cercidiphyllum japonicum)
‘Pendula’ weeping form; China, Japan;
40-80 feet tall (nonweeping-form);
zones 4-8; medium-fast growth;
no serious pests; leaves emerge
reddishpurple, change to bluegreen in
summer; distinct spurred stems
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29) ‘Green Pillar’ Pin Oak
(Quercus palustris ‘Green Pillar’)
Native; columnar, upright form; zones
4-8; 30+ feet tall; prefers slightly acidic
soils, as does straight species pin oak
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2) Swamp White Oak (Quercus bicolor)
Native, moist bottomlands; 50-60 feet
tall; zones 3-8; tough tree; usually
marcescent (brown leaves persist
through winter)
11) Carolina Silverbell (Halesia carolina)
Native; 30-40 feet tall; zones 4-9;
white flowers ½ to 1 in. long borne
on pendulous ½ to 1 in. long stalks in
April/May; pest-resistant
HUB Campus
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1) Male Ginkgo & 1A) Female Ginkgo
(Ginkgo biloba)
Eastern China; 50-80 feet tall, varying
spreads; zones 4-9; virtually pest-free;
good, tough city tree; plant male
trees to avoid the smelly, messy fruit;
nice yellow fall color in its unique
fanshaped leaf; g. biloba extracts often
taken for medicinal values; also known
as maidenhair tree
LOOP 2:
Tree and number
correspond with key.
ge S
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Academic Quad
20) ‘Homestead’ Smoothleaf Elm
(Ulmus carpinifolia ‘homestead’)
Native; 70-90 feet tall; zones 2-9; one of
many dutch-elm-disease-resistant elms
planted on campus; other American
varieties include ‘Valley Forge,’
‘Delaware,’ ‘Princeton’ and ‘American
Liberty’
th C
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LOOP 1:
Sheffield, Pa., is known as the “black
cherry capitol of the world”; great for
wildlife
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39) ‘Natchez’ Crapemyrtle
(Lagerstroemia indica ‘Natchez’)
China and Korea; zones 6-9; growth
ranges from 18 inches to 45 feet
tall depending on cultivar; beautiful
exfoliating bark from brown to grey
makes it an interesting plant for winter;
white, red, pink ,or lavender flowers in
mid-summer.
40) Ailanthus (Ailanthus altissima)
China; zones 4-8; also known as tree
of heaven; this particular tree currently
ranks 5th among measured ailanthus on
Pennsylvania’s registry of large trees;
very adaptable to all growing conditions,
therefore can be very problematic.
41) London Planetree (Platanus x acerifolia)
Hybrid; zones 4-9; large tree which can
grow to 100 feet tall; cross between
American sycamore and oriental
planetree; mottled bark is attractive in
winter with colors of olive, cream, and
brown; shows resistance to foliar disease
anthracnose which is very problematic
with American sycamore; tolerates urban
air pollution very well.
42) Sassafras (Sassafras albidum)
Native; 30-60 feet tall; zones 4-9; mediumfast growth; beautiful fall color, deep
orange to scarlet reddish-purple; often
three leaf shapes on same tree (entire,
2-lobed, 3-lobed); sassafras tea
43) ‘Queen Elizabeth’ Hedge Maple (Acer
campestre ‘Evelyn’)
Europe; zones 4-8; 25-35 feet tall; yellow
flowers emerge with leaves, but are
not showy; withstands severe pruning,
therefore often used as hedges in Europe;
very tolerant of adverse conditions.
44) Goldenchain Tree (Laburnum x wateri)
Hybrid; zones 5-7; 12-15 feet high; green
colored bark; yellow flowers are 6-12
inches long; legume; should be planted in
protected location.
45) Tulip Poplar (Liriodendron tulipifera)
Native; zones 4-9; also known as tuliptree
or yellow-poplar; named for flower
resemblance to tulips; valvate terminal
buds resemble a duck bill; usually 70-90
feet tall, but can reach 150 feet.
46) Oriental Hornbeam (Carpinus orientalis)
Southeast Europe; twisted branches
make interesting winter characteristic; pH
adaptable.
47) European Larch (Larix decidua)
Northern and central Europe; zones
3-6; pyramidal shape; can grow to 100
feet tall; mistaken for a dead pine in
fall/winter, due to it being a deciduous
conifer; horizontal branches while the
branchlets droop.
48) Chestnut Oak (Quercus montana)
Native to eastern US; zones 4-8; found
primarily on poor, dry, upland sites;
important to wildlife as a food source;
found extensively in Appalachian
mountains; leaves have very shallow
sinuses, which don’t resemble a typical
oak leaf; very important tree to iron
production in south mountain area as
trees were managed by coppice, to
produce fuel for iron furnaces.
49) Honey Locust (Gleditsia triacanthos
var. inermis) Native; zones 4-9; pinnate
or bipinnately compound leaves;
grows quickly; vertical ridges in
bark; leguminous plant which fixes
atmospheric nitrogen; highly propogated
with roughly 25-30 named cultivars;
naturally occurring species is laden with
large thorns; this particular tree is the
thornless variety.
50) Sawtooth Oak (Quercus acutissima)
Japan, Korea, China, Thailand, and
Himalaya; zones 6-9; quick growing oak;
acorn cap covers roughly 2/3 of entire
nut; very heat tolerant; leaves highly
resemble chestnut leaf, and is often
confused with chestnut trees; easily
transplanted; male flowers emerge with
leaves.
51) White Ash (Fraxinus americana)
Native; zones 4-9; opposite compound
leaf arrangement; twigs appear stout
in winter; yellow fall color; an invasive
insect known as emerald ash borer
threatens to devastate ash trees; most
wooden baseball bats are made from the
wood of white ash trees.
52) Ironwood (Ostrya virginiana)
Native; zones 3-9; also called blue beech
or hophornbeam small tree 15-30 feet
tall; male flowers persist through winter
in groups of 3; female flowers appear in
April; no serious pest or disease; tolerates
drought quite well; slow to establish after
transplanting.
the species used in commercial pistachio
production.
53) Giant Sequoia (Sequoiadendron giganteum)
Native; range limited to small groves in
the Sierra Nevada Mountains at 4,500
to 6,000 feet above sea level; zones
6-8; bluish green needles; some of the
largest trees measure over 100 feet in
circumference, however don’t usually
reach the height of coastal redwoods
(Sequioa sempervirensi); a fire resistant
species with bark on mature trees
approaching 3 feet thick.
56) ‘Fernleaf’ Beech
(Fagus sylvatica ‘Asplenifolia’)
Cultivar of European beech that has
produced a fern-like leaf.
55) Shingle Oak (Quercus imbricaria)
Native; zones 4-8; 50-60 feet tall;
elongated leaf with entire margin; leaves
persist through winter; wood was once
used to make shingles.
54) Chinese Pistache (Pistacia chinensis)
Central and western China, Taiwan,
and Phillipines; zones 6-9; in the same
botanical family as poison-ivy, -oak , and
-sumac; dioecious; can grow up to 3 feet
per year with good cultural conditions;
no serious pest or disease problems; not
February 2014