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.
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.
The branch of a Yucca Radiosa, a species of perennial shrub from the agave family.
The Yucca aloifolia also known as the Aloe Yucca or Spanish Bayonet.
A leaf of the Zamia, a tree from the Mesozoic time.
"Zizyphus Baclei. 1. a flower seen from above; 2. a fruit; 3. the same cut vertically; 4. a seed divided…