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by Jay Scott '18

Arboretum Guidebook 2018

This 65 year old Arizona Pine is over 20 meters tall. This species is a subset of the much more common Ponderosa Pine, mostly seen in the Southwest in places like New Mexico, Arizona, and some parts of Texas. It's thick bark and ability to recover from scorch damage protect it from the wildfires common in the Southwestern United States, making it fire-resistant. It has winged seeds enclosed in small pinecones.

Arizona Pine

Pinus Arizonicus

Type: Coniferous; Pine

Height: 20 Meters

DBH: 2.30 Meters

Crown Transparency: Very Transparent

Umbrella Magnolias are found all across the East Coast from Georgia up into Southern Pennsylvania and as far west as Kentucky. The name Umbrella comes from the way leaves are bunched into umbrella-like clusters at the ends of each branch. The Umbrella Magnolia has a yellowish fruit that ripens in early Autumn. It also has white flowers that bloom in Spring, usually sometime between May and June. This tree is important ecologically because of the food and shelter it provides for birds, who often build nests in the trees and eat its fruit.

Umbrella Magnolia

Magnolia Tripetala

Type: Deciduous; Magnolia

Height: 17.5 meters

DBH: 1.63 meters

Crown Transparency: Semi-Transparent

The Chinese Spruce, also known as the Dragon Spruce is a coniferous tree native to Western China. It is an evergreen tree and usually flowers in April. The flowers are monoecious, meaning there are flowers of the male and female sex. They are pollinated by wind. The Chinese Spruce was an important logging tree in China, and because of that, it became vulnerable and still remains so today. Though it became protected by the Chinese government in 1998, the population has continued to decline.

Chinese Spruce

Picea Asperata

Type: Coniferous; Spruce

Height: 20.5 meters

DBH: 0.83 meters

Crown Transparency: Very Transparent

The Amur Cork Tree near the cabin is known for its sour smelling berries. It is a deciduous tree, and flowers appear in the Spring. The tree is known as "Huang Bai" in China, where it is considered an essential herb in the Chinese herbalist tradition. It used to treat meningitis, conjunctivitis, and other conditions. It is alleopathic, meaning its roots release chemicals that alter soil composition, making it harder for other plants to grow.

Amur Cork Tree

Phellodendron Amurense

Type: Deciduous; Cork Tree

Height: 29.5 m

DBH: 4.62 m

Crown Transparency: very transparent

Depsite its name, the Douglasfir is not a true fir, hence its name is written as one word. The Douglasfir is an evergreen found all over the Northern United States. It makes up 50% of all Christmas trees in North America. In addition, it was integral to Western expansion, being used to build the railroads and telegraph poles that connected the Western United States to the East Coast. Songbirds, squirrels and other wildlife eat Douglasfir seeds, while deer and elk eat its foliage and twigs. 


Pseudotsuga menziesii

Type: Evergreen

Height: 37.5 m

DBH: 3.42 m

Crown Transparency: Semi-transparent

Endemic to Turkey and Georgia, the Oriental Spruce was introduced to the West in 1827. It is an evergreen, and unlike other spruces, maintains its dark green color through the entire winter. Because of this, it is an important winter cover for small animals such as hares and grouse. It is found all over the United States.

Oriental Spruce

Picea Orientalis

Type: Evergreen, Spruce

Height: 33

DBH: 3.51

Crown Transparency: Opaque

The Colorado Spruce is an evergreen endemic to the Western and Southwestern United States, especially the Rocky Mountains. It is a common in the commercial tree industry because of its beautiful bluish-silver needles. This tree has a wide variability in terms of color and size. While the blue-silvery needles are most common, there is also a green-needled form that is sold as the Colorado Green Spruce. While Colorado Spruces usually grow up to 50 feet, they commonly grow to much greater heights in the wild.  

Colorado Spruce

Picea Pungens

Type: Evergreen; Spruce

Height: 25 m

DBH: 2.13 m

Crown Transparency: Semi-Transparent

The Cedar of Lebanon is a conifer and native to Asia Minor and Syria. Westtown's was planted by the Class of 1927, meaning it is most likely over half a century old. It is important to both biblically and mythologically, being mentioned many times in the Old Testament and in the Epic of Gilgamesh. Today, it is a common ornamental tree in both the United States and Europe. It produces flowers from June to September.

Cedar of Lebanon

Cedrus Libani

Type: Conifer; Cedar

Height: 33.5 m

DBH: 4.32 m

Crown Transparency: Semi-Transparent

This Mexican White Pine planted by the class of 1958 is an evergreen tree native to the Southwestern United States and Mexico. It is not commonly seen outside of these areas. It is most commonly found in mountainous environments. Its seeds were eaten by indigenous peoples and it is used in Mexico for cabinetry and doors. This has lead to a recent decline in population, though it is not currently under threat. 

Mexican White Pine

Pinus Strobiformis

Type: Conifer; Pine

Height: 35 m

DBH: 4.62 m

Crown Transparency: Opaque

Mountain White Pine

Pinus Flexilis

Type: Conifer; Pine

Height: 35 m

DBH: 4.62 m

Crown Transparency: Opaque

The Golden Larch is a conifer native to China that was first introduced to the West in 1853. It is a popular ornamental tree because of the vibrant gold of its leaves in autumn. This tree is under threat in its native environment, only found in a few areas. Efforts to protect it include a logging ban as well as the creation of restricted areas; however agricultural expansion in China is causing a rapid decline in their population. Westtown's Golden Larch was planted in 1923.

Golden Larch

Pseudolarix amabilis

Type: Conifer

Height: 25 m

DBH: 3.31 m

Crown Transparency: Semi-Transparent

Lobb's Temple Cedar

The Tigertail Spruce is a conifer native to Japan. unique for its habitat of volcanic mountainous environments. Despite it's vibrant appearance, it is uncommonly seen outside of Japan. There are few Tigertail Spruces left in its natural environment, but it is a popular ornamental species in Japan where it is used ornamentally in parks and gardens. It is a vulnerable species with a decreasing population.

Tigertail Spruce

Picea Torano

Type: Conifer; Spruce

Height: 20 m

DBH: 1.76 m

The White Spruce is a conifer Native to the boreal forests of the Northern United States, across Canada and Alaska, and as far south as Montana. There, it is an important logging tree because of its strong wood and is used in construction. In Alaska, the White Spruce is often the tree used to build log cabins. It is also used for indoor flooring, carpentry, and in some musical instruments as sounding boards.

White Spruce and var. Black Hills Spruce

Picea Glauca

Type: Conifer, Spruce

Height: 14.5 m

DBH: 2.31 m

Winged Hickory

Type: Conifer; Hickory

Height: 29 m

DBH: 4.45 m 

The Blue Ash is a critically-endangered species of ash tree, which as a whole have been devastated by Emerald Ash Borers. They are insects that feed on Ash Trees, often choking them internally by blocking the xylem and phloem of a tree. The mortality rate for a Blue Ash with EAB is nearly 100%. Westtown's Blue Ash is one of the 90 preserved in Arboretums and Botanical Gardens worldwide. They are extremely rare in the wild and efforts to conserve them have been ineffective. If is continues to decline at this rate it will mostly likely become extinct in its natural habitat.

Blue Ash

Fraxinus quadrangulata

Type: Conifer; Ash

Height: 21.5

DBH: 1.92

Also known as the Northern Catalpa, this tree is known for its heart-shaped leaves and beautiful white flowers in the spring. The Western Catalpa is important to many species of wildlife, including hummingbirds and the catalpa sphinx moth, of which the Western Catalpa is its sole host. The Western Catalpa also serves as important nutrition for bees. It is found all over the United States and is popular in gardens and parks. Westtown's Western Catalpa is over 100 years old, having been planted in 1904.

Western Catalpa

Catalpa Speciosa

Type: Deciduous

Height: 31 m

DBH: 4.27 m

Crown Trasparency: Opaque

The Dawn Redwood is a redwood tree native to Central China. The Dawn Redwood was thought to be extinct until it was rediscovered in 1941. Today, thought it is endangered in its natural habitat, it can be found in botanical gardens and arboretums across the world. Fossil discoveries of the Dawn Redwood have revealed its presence spans back to the time of the dinosaurs. Westtown's Dawn Redwood was donated in 1959 by Longwood Gardens.

Dawn Redwood

Metasequoia glyptostroboides

Type: Conifer; Redwood

Height: 40m

DBH: 4.65m

Crown Transparency: Opaque

The Atlas Cedar is a conifer endemic to Northwestern Africa. There, its populations have been decimated by logging. It is a popular tree for cabinetry and furniture because of its aromatic oil being a natural deterrent for insects. The Atlas Cedar is the last habitat of the Barbary Macaque, which is also endangered. Westtown's tree was planted by the class of 1942.

Atlas Cedar

Cedrus Atlantica

Type: Conifer; Cedar

Height: 30m

DBH: 3.95 m

Crown Transparency: Semi-Transparent

The Yellowood is a deciduous tree native to North America. In the spring, it produces fragrant white flowers that grown in clusters. In the fall, its foliage becomes a brilliant gold. Westtown's Yellowood was planted in remembrance of Mike Adler.


Cladrastis kentukea

Type: Deciduous

Height: 11

DBH: 0.95 m

The Trident Maple is a deciduous tree native to China, Japan, and Korea. Like many maples, it produces beautiful foliage in autumn that ranges from deep red to amber orange tones. It is often used in urban environments such as parks because it can tolerate a wide range of soil types and conditions. Westtown's Trident Maple was planted in 1925 and is nearly 100 years old.

Trident Maple

Acer buergerianum

Type: Deciduous; Maple

Height: 17 m

DBH: 1.34 m

Crown Transparency: Opaque

The Wafer Ash is a deciduous tree native to North America. It is also known as the hop tree, because of its seeds once being used for brewing beer. The Wafer Ash also has a bitter bark that is used medicinally. It sprouts white, foul-smelling blooms in the summer.

Wafer Ash

Ptelea trifoliata

Type: Deciduous; Ash

Height: 4 m

DBH: 1.23 m

The Palmate Norway Maple is the most widespread tree on the continent of Europe, where its range spans all the way from Italy to Russia. It is commonly seen in the wild, but is also a popular ornamental tree. It is used to manufacture goods such as furniture, cabinetry and musical instruments. Westtown's Palmate Norway Maple was donated by the Tyler Arboretum and was planted in 1928.

Palmate Norway Maple

Acer platanoides

Type: Deciduous; Maple

Height: 17m

DBH: 1.34m

The English Hedge Maple is a deciduous tree endemic to Europe. It's name comes from its use as a cover and barrier in landscaping because of its rounded shape. Though the species is considered threatened or endangered, the Asian Longhorned Beetle poses a threat to this species. Trees that have been infested with the beetles often die, and it becomes harder for them to fend off other disease. The Maple is often used as firewood and planted to prevent soil erosion.

English Hedge Maple

Acer campestre

Type: Deciduous; Maple

Height: 23 m

DBH: 2.01 m

The Forest Pansy Redbud, commonly known as the Eastern Redbud, is a deciduous tree native to the United States. It produces beautiful pink blooms in the spring that attract butterflies and other insects. The tree was a favorite of President George Washington, who often planted them in his garden. in addition, it serves as the state tree of Oklahoma. Westtown has two Eastern Redbuds.

Forest Pansy Redbud

Cersis canadensis

Type: Redbud; Deciduous

Height: 14 m

DBH: 1.45 m

Type: Deciduous; Redbud

Height: 13 m

DBH: 1.34 m

The Katsura Tree is native to China and Japan. It is a popular ornamental tree because of its unique foliage that varies a wide range of colors depending on the season. While it is popular in gardens and parks, the species is under threat in its native Japan because of its slow regeneration time. It is closely related to the Forest Pansy Redbud, another species found in Westtown's arboretum.


Cercidiphyllum japonicum 

Type: Deciduous; Redbud

Height: 34 m


The Black Gum tree, also known as the Black Tupelo Tree, is a deciduous tree grown all over the United States. The species is particularly popular in Florida, where it is a popular choice for beekeepers. The honey produced by bees who drink Black Gum nectar is particularly light and sweet. In addition to being a food source for bees, the Black Gum's berries are a food source for birds and other wildlife.

Black Gum

Nyssa sylvatica

Type: Deciduous; Gum


DBH: 3.24 m

The American Arborvitae, also known as the Northern White Cedar, is a conifer indigenous to North America. For centuries, it has been used to build canoes because of its strong, lightweight wood. The American Arborvitae was also used medicinally by Native Americans. Its leaves have a distinct, pleasant scent that is released when they are squeezed, hence the scientific name "thuja", meaning perfume. Westtown has a small grove of five American Arborvitae.

American Arborvitae

Thuja occidentalis

Type: Conifer; Cedar

Height: 15-17 m

DBH: 1.51-4.85 m

Crown Transparency: Opaque

Umbrella Pine

Pinus Pinea

Type: Conifer; Pine

Height: 24 m


Crown Transparency: Opaque

Bald Cypress

Taxodium Distichum

Type: Deciduous; Cypress

Height: 25 m

DBH: 2.19 m

Crown Transparency: Opaque

Cicilian Fir

Abies nebrodensis

Type: Conifer, Fir

Height: 35 m

DBH: 2.41 m

Crown Transparency: Opaque

China Fir and Blue China Fir

Cunninghamia Lanceolata

Type: Conifer

Height: 33-37 m

DBH: 2.18-6.11 m

Crown Transparency: Opaque

California Big Tree

Type: Deciduous

Height: 37

DBH: 2.74

Crown Transparency:

Nikko Fir

Abies homolepis

Type: Conifer; Fir

Height: 38 m

DBH: 2.12 m

Crown Transparency:

Greek Fir

Abies cephalonica

Type: Conifer; Fir

Height: 34 m

DBH: 1.96 m

Crown Transparency: Semi-Transparent

Colorado Fir

Abies concolor

Type: Conifer; Fir

Height: 36 m

DBH: 1.34 m

Crown Transparency: Very transparent

Nordman Fir

Abies nordmanniana

Type: Conifer; Fir

Height: 37 m

DBH: 2.53 m

Crown Transparency: Semi transparent

White Pine

Pinus strobus

Type: Conifer; Pine

Height: 26 m

DBH: 3.42 m

Crown Transparency:

Deodar Cedar

Cedrus deodara

Type: Conifer; Cedar

Height: 14 m

DBH: 1.13 m

Crown Transparency: 

Loblolly Pine

Pinus Taeda

Type: Conifer; Pine

Height: 25-26 m

DBH: 2.06-2.59 m

Crown Transparency: 

Chinese Yew

Taxus chinensis

Type: Yew; Deciduous

Height: 11 m

DBH: 3.23 m

Crown Transparency:

California Incense Cedar

Calocedrus decurrens

Type: Cedar; Conifer

Height: 20

DBH: 3.86 m

Crown Transparency: 

Spreading English Yew

Taxus baccata v. 'Repandens'

Type: Yew; deciduous

Height: 6-12 m

DBH: 1.05-2.14 m

Crown Transparency:

Upright Japanese Yew

Taxus cuspidata v. 'Fastigiate'

Type: Deciduous; Yew

Height: 13 m

DBH: 2.06 m

Crown Transparency:

Pond Cypress

Taxodium ascendens

Type: Deciduous Conifer; Cypress

Height: 26 m

DBH: 2.19

Crown Transparency: 

Plum Yew

Type: Yew; Decidious

Height: 10

DBH: 2.35

Crown Transparency: