A small deciduous tree, native to the Mediterranean region. It produced the earliest-known form of turpentine,…
Pictured is a tree with an unattractive bushy top and bad stumps. The stumps will decay instead of healing.
"These animals are generally called Tree-corals, on account of the forms of the polypidons…
Illustrated in the effect of trees on a city street compared with no trees.
Broken trees, the result of crotches.
Triangle diagram for measuring heights of trees using proportions.
Triangle diagram for measuring heights of trees using proportions
An illustration of a triangle comprised of a tree and two lines. This is an example of a problem that…
Right triangle ABC with angles A, B, C to be used for finding distance across a river. This is a trigonometry…
Also known as Quercus cerris. A branchlet of a turkey oak with an acorn.
Also known as Quercus cerris. The branch of a Turkey Oak tree, native to southern Europe.
Pictured is the horizontalis variety of Ulmus scabra. It is a weeping tree representing a grotesque…
A branch from an Umbellularia californica tree, native to the forests of California and Oregon.
Also known as Magnolia tripetala. The branch of an Umbrella Magnolia tree, native to the southeastern…
"Flowering branch of the Upas-Tree."-Whitney, 1902
Also known as Juniperus osteosperma. A small tree native to the southwestern United States.
Also known as Quercus lobata. The branch of a Valley Oak tree, native to California.
A South American palm that produce a seed for the which the plant is named.
Also known as Pinus virginiana.
Walnut, a genus comprising seven or eight species of beautiful trees of the Juglandaceae order.
An illustration of warblers eating plant lice in a tree.
The Washington Elm
Also known as Betula fontinalis. A species of birch native to North America.
Also known as Hicoria aquatica. The branch of a Water Hickory tree, native to the southeast United States.
Also known as Quercus nigra. The branch of a Water Oak tree, native to the southeastern United States.
Also known as Myrica cerifera. A small tree native to North America. It is commonly used for candle-making,…
Also known as Juniperus flaccida. A large shrub or small tree native to central and northern Mexico,…
Also known as Tsuga heterophylla. A species of hemlock native to the west coast of North America.
Also known as Juniperus occidentalis. Native to the western United States.
Also known as Larix occidentalis. A species of larch native to the mountains of western North America.
Also known as Thuja plicata. An evergreen coniferous tree native to western North America.
Also known as Platanus racemosa. The branch of a Western Sycamore tree, native to California.
Also known as Pinus monticola. A pine cone of the Western White Pine tree.
Also known as Alnus rhombifoiia. The branch of a White Alder tree, native to western North America.
Also known as Abies concolor. Native to the mountains of western North America.
White oak is an ideal shade tree.
Also known as Quercus alba. The branch of a White Oak tree, native to eastern North America.
Also known as Picea glauca. A spruce tree native to the northern half of North America.
Also known as Juglans cinerea. A species of walnut native to the eastern United States and southeast…
Also known as Pinus albicaulis. A pine cone from a Whitebark Pine tree.
An illustration of a willow branch.
Also known as Quercus phellos. The branch of a Willow Oak tree, native to eastern North America.
Large willow tree of Eurasia and North Africa having greyish canescent leaves and grey bark
Also known as Ulmus alata. The branch of a Winged Elm tree, native to the southern United States.
A winter scene with a bird in the tree.
Also known as Hamamelis virginiana. The branch of a Witch Hazel shrub, native to the eastern United…
"On the walls near the lantern." — Young, 1901
A cross-section of wood infested with insects.
The golden-winged woodpecker is known for burrowing its own holes into live trees to use as a nest.
Chiefly making its habitat in Northern Europe, the great black woodpecker uses its long, sharp bill…
Found in Southern Europe, the middle spotted woodpecker has a black coat, with a crimson underside and…
Also known as Betula lenta. The branch of a Yellow Birch tree, native to eastern North America.
Also known as Liriodendron tulipifera. A branch of a Yellow Poplar tree, native throughout North America.
"Taxus baccata loaded with male flowers; 1. a male flower; 2. an anther; 3. a female flower; 4. a vertical…
"Saxe-Gothea conspicua; 1. male spike; 2. anther; 3. scale of galbulus with ovule; 4. ripe galbulus."…
Also known as Salix taxifolia. The branch of a Yewleaf Willow, native to southern Mexico and the Pacific…
A branch of Yucca arborescens, a species in the agave family.
The branch of a Yucca faxoniana, a species of perennial shrub native to the southwest United States.
The branch of a Yucca macrocarpa, a species of agave plant.
The branch and fruit of a Yucca mohavensis, a species of plant from the agave family.