Number of trees: 37
Mileage: App. 1.5
Walking time: App. 1 hour

	A symbol of the state of Indiana denotes the trees that are profiled in the booklet 50 Trees of Indiana.
	A symbol of the leaf indicates that there is a link to a picture of that specific tree.
	1) Bitternut Hickory—Carya cordiformis Bitternut hickory earns its name. Squirrels eat the nuts from this tree only after other food sources are exhausted. Bitternut produces a tough, strong lumber and is the most widespread hickory.
	2) Canadian Hemlock—Tsuga canadensis Its dense texture makes Canadian hemlock a popular evergreen. It can be pruned as a hedge or allowed to grow to its full height. The bark from this tree was used by Native Americans to make a paste that would draw out venom and act as an antiseptic. This plant is in no way associated with the “hemlock” poison drunk by the philosopher Socrates.
	3) Serbian Spruce—Picea omorika Serbian spruce is noted for its narrow, upright form. It can grow to 60 feet tall and still have a spread of no more than 15 feet. The dark green needles with two white lines on the lower surface are another prominent feature of this tree.
	4) American Beech—Fagus grandifolia Beech is one of the most distinctive trees of North America. It is notable for its smooth gray bark and spreading crown. Beech has a natural tendency to hollow and rot. This condition is often aggravated by carvings made in the bark by vandals.
	5) Sycamore Maple—Acer pseudoplatanus A native of Europe and western Asia, this tree is best known for its resistance to damage caused by road salt. This characteristic has made the sycamore maple a desirable tree in some areas despite its lack of fall color.
	6) Persimmon—Diospyros virginiana Persimmon occurs in moist bottomlands from Connecticut to Texas. The chunky bark on most persimmon trees resembles alligator skin. Persimmon has little commercial value with one unique exception: its hard, dense wood is highly favored for golf club heads.
	7) Homestead Elm—Ulmus “Homestead” The Homestead elm is a relatively new hybrid. It grows rapidly and takes on the “vase” shape of American elm as it matures. The species is reported to be very resistant to Dutch elm disease and phloem necrosis, two diseases that have destroyed most American elms in our area.
	8) White Pine—Pinus strobus Originally found in the Great Lake states and the Northeast, white pine is now successful throughout the eastern U.S. The tree’s form and size astound many observers—it reaches heights of 200 feet. In the days of wooden ships, white pine was a highly valued timber for the construction of masts.
	9) Redbud—Cercis canadensis Redbud is beautiful for its form and pink spring flowers. The most notable use for redbud is landscape and ornamental plantings. Redbud is the Oklahoma state tree.
	10) Japanese Tree Lilac—Syringa reticulata This species of lilac will grow to be 20 to 30 feet tall. It has large clusters of creamy white flowers in mid-June. The bark is glossy and reddish-brown, resembling that of a cherry tree.
	11) Silver Linden—Tilia tomentosa Silver linden is similar to American linden (Basswood), but with the difference of a silvery-white undersurface to the leaves. The flowers bloom in early July and are very fragrant.
	12) Swiss Stone Pine—Pinus cembra This pine is a slow grower but holds its pyramidal shape well into maturity. The long, flexible needles grow in groups of five, similar to eastern white pine.
	13) Cutleaf Beech—Fagus sylvatica “Laciniata” This slow-growing tree is a type of European beech with fine, almost fern-like leaves.
	14) Common Bald Cypress—Taxodium distichum This tree is one of two species on campus that lose all of their needles in the fall. The needles come out late in the spring and give the tree a soft, feathery appearance. They turn a rich bronze color before dropping.
	15) Honey Locust—Gleditsia triacanthos Native to the central U.S., the honey locust has filled a void left by the deaths of many streetside elms. It has a pleasing form and natural hardiness. Reproduction and dispersement are accomplished by means of a seed pod that drops from the tree during winter. Many seedless varieties are now available.
	16) Sweetgum—Liquidambar styraciflua Sweetgum is notable for leaves that are shaped like five-pointed stars during the summer, and for spiny seed- carrying balls that appear in the fall.
	17) Chestnut Oak—Quercus prinus Chestnut oak is at home in the Appalachian Mountains. It can be found growing on poor, dry upland sites in pure stands. The bark contains a chemical called tannin, which is used in the preparation of tanned leather.
	18) Trident Maple—Acer beurgeranum Trident maple is originally from Japan and was first brought to the U.S. in 1892. An interesting feature is its bark, which naturally peels in patches. This species usually does not grow more than 30 feet tall. The leaves turn to a beautiful combination of orange and red in the fall.
	19) American Holly—Ilex opaca This attractive tree displays spiny evergreen leaves and red berries that are used during the Christmas season. It’s one of the few trees that does not produce bark, but instead retains its original outer layer of cells.
	20) Chanticleer Pear—Pyrus calleryana “ Chanticleer” This tree is very similar to “Redspire,” though it has a more conical form and is more resistant to fireblight.
	21) Redspire Pear—Pyrus calleryana “ Redspire” This tree is a medium size cultivar of callery pear that is planted for its fruit and its showy flowers. The fruit is related to the common pear that we eat but is only 1/2" in diameter.
	22) Pyramidal English Oak—Quercus robur “ Fastigiata” As the name indicates, this tree has a narrow, upright form, which facilitates its use as a screen or visual relief near buildings.
	23) Ironwood—Ostrya virginiana Due to its small size, ironwood is often excluded from the limelight given to many of its eastern forest companions. Yet the tree decorates the understory with its twisted form and scaly bark. Ironwood is just what the name implies: dense and strong.
	24) Oakleaf Mountain Ash—Sorbus x hybrida The name of this tree can be very misleading. It is neither an oak nor an ash. Rather, it is a very attractive small tree that grows to about 30 feet tall. It develops clusters of white flowers in the spring that turn to deep red fruit in the fall.
	25) Hackberry—Celtis occidentalis This relative of the elm with its warty bark grows best in fairly moist soils. A variety of birds—including robins, pheasants, and grouse—eat its fruit.
	26) Chinese Dogwood—Cornus kousa This species is similar to the flowering dogwood, but it flowers three to four weeks later. Fruits resemble raspberries and are sought after by wildlife. Like the native dogwood, the leaves turn a deep scarlet in the fall.
	27) White Fringetree—Chionanthus virginicus The large, white, feathery clusters of flowers are the outstanding feature of this tree. The blossoms can be seen from early April to late May and develop into dark blue, grape-like fruits that attract wildlife. This is a small tree that will grow to be 12 to 20 feet in height with an equal spread.
	28) Red Buckeye—Aesculus pavia This tree will grow to be 10 to 20 feet tall, making it popular in landscapes where space is limited. It has upright clusters of red flowers that bloom in mid-to late-May.
	29) Shagbark Hickory—Carya ovata Pioneers found the wood of shagbark hickory to be resilient and flexible. Hickory soon became prized for axe handles, wagon hubs, and fuel wood. Shagbark hickory still serves many of these uses today.
	30) Osage Orange—Maclura pomifera Osage orange, also called hedgeapple, is native to Oklahoma, Arkansas, and Texas. Midwesterners soon discovered that it would grow anywhere and that it made an excellent livestock hedge. Hedgeapple bears a large, green, apple-like fruit in late summer. Pioneers used this fruit as a pest repellent by storing pieces of it around the foundations of buildings.
	31) Blue Beech—Carpinus caroliniana Blue beech plays a small but decorative part in the forest understory. It is usually a poorly formed tree with tight blue-gray bark. Blue beech has little commercial value due to its small size. Originally the dense tree was used for making tool handles and, later, baseball bats.
	32) Washington Hawthorn—Crataegus phaenopyrum This is the most common type of hawthorn found on Purdue’s campus. It has large numbers of white flowers in mid-June. These develop into red berries that last through most of the winter. The leaves turn orange to scarlet in the fall.
	33) Flowering Dogwood—Cornus florida Dogwood remains a favorite for landscape use. The small size of the tree lends itself to city plantings, and the flowers are beautiful. Birds are attracted to the red berries. Dogwood is the state tree of both Missouri and Virginia.
	34) Turkish Filbert—Corylus colurna Turkish filbert is a native of southeastern Europe. The tree grows to approximately 40 feet in height, with a pyramidal form. It is known for its ability to withstand drought and pollution problems.
	35) Rocky Mountain Glow Maple— Acer grandidentam “Schmidt” This native of the Rocky Mountains is a close relative of the sugar maple, though it is smaller in size with a smaller leaf. The leaves are dark green in the summer, turning to a bright red in the fall.
	36) Pink Spires Crabapple—Malus “Pink Spires” This crabapple is a small tree that will grow to be about 15 feet tall and 12 feet wide. It has pink flowers. The leaves are a reddish color in the spring, turning to a reddish-green in the summer and a beautiful bronze in the fall.
	37) Snowdrift Crabapple—Malus “Snowdrift” This crabapple grows into a rounded shape, 20 feet tall and 20 feet wide. It is covered with white blossoms in the spring. The flowers develop into red-orange fruit that is desirable to wildlife.