"Thuja orientalis; 1. a magnified fragment of a branch bearing a cone of male flowers; 2. a portion of a female branch; 3, 4. scales with naked ovules; 5. a vertical section of a ripe seed." -Lindley, 1853

Biota

"Thuja orientalis; 1. a magnified fragment of a branch bearing a cone of male flowers; 2. a portion…

"Betula lenta. 1. male flowers; 2. female flowers; 3. perpendicular section of a ripe fruit; 4. transverse section of it." -Lindley, 1853

Sweet Birch

"Betula lenta. 1. male flowers; 2. female flowers; 3. perpendicular section of a ripe fruit; 4. transverse…

"Male and female catkins of Betula alba." -Lindley, 1853

White Birch

"Male and female catkins of Betula alba." -Lindley, 1853

A frame with many different species of birds.

Bird frame

A frame with many different species of birds.

An illustration of a birdhouse in a tree limb.

Birdhouse in Tree Limb

An illustration of a birdhouse in a tree limb.

Birds in a tree

Birds

Birds in a tree

Five birds taking flight from a tree.

Birds

Five birds taking flight from a tree.

An illustration of four birds flying around a branch of a tree.

Birds Flying Around Tree

An illustration of four birds flying around a branch of a tree.

Birds in a Tree

Birds in a Tree

Birds in a Tree

An illustration of two birds on a tree.

Two Birds on Tree

An illustration of two birds on a tree.

Three birds sitting in a tree.

Three Birds

Three birds sitting in a tree.

Also known as Pinus muricata, mostly found in California.

Bishop Pine Cone

Also known as Pinus muricata, mostly found in California.

Bixa, also known as Annatto or Arnatto, is an evergreen tree. The orellana variety has pale, peach colored flowers. Annatto, or arnatto, is a dye made from the red pulp.

Flowering Branch of Bixa Orellana

Bixa, also known as Annatto or Arnatto, is an evergreen tree. The orellana variety has pale, peach colored…

The common name of <i>Alnus glutinous</i> is black alder. The leaves are two to five inches long with five to seven pairs of veins. The tree grows up to seventy feet tall.

Black Alder

The common name of Alnus glutinous is black alder. The leaves are two to five inches long with five…

Also known as Populus trichocarpa. The branch of a Black Cottonwood tree, native to western North America.

Branch of Black Cottonwood

Also known as Populus trichocarpa. The branch of a Black Cottonwood tree, native to western North America.

Also known as Picea mariana. A species of spruce native to North America.

Black Spruce Pine Cone

Also known as Picea mariana. A species of spruce native to North America.

Also known as Salix nigra. The branch of a Black Willow tree, native to eastern North America.

Branch of Black Willow

Also known as Salix nigra. The branch of a Black Willow tree, native to eastern North America.

Also known as Quercus marilandica. The branch of a Blackjack Oak, native to the southern and central United States.

Branch of Blackjack Oak

Also known as Quercus marilandica. The branch of a Blackjack Oak, native to the southern and central…

"Bladder-nut. a.-- Flower. b.-- Fruit. Bladder-nut, a name of shrubs or small trees, natives of Europe, Asia, and North America, the fruits of which consist of an inflated bladdery capsule containing the seeds." -Vaughan, 1906

Bladdernut

"Bladder-nut. a.-- Flower. b.-- Fruit. Bladder-nut, a name of shrubs or small trees, natives of Europe,…

"Staphylea Bumalda. 1. a flower; 2. a perpendicular section of it; 3. a section of its ovary." -Lindley, 1853

Japanese Bladdernut

"Staphylea Bumalda. 1. a flower; 2. a perpendicular section of it; 3. a section of its ovary." -Lindley,…

The common name of <I>Blighia sapida</I> is akee tree.  The leaflets grow in three or four pairs. The flowers are white and have oblong petals.

Blighia Sapida

The common name of Blighia sapida is akee tree. The leaflets grow in three or four pairs. The flowers…

Also known as Quercus douglasii. The branch of a Blue Oak tree, native to California.

Branch of Blue Oak

Also known as Quercus douglasii. The branch of a Blue Oak tree, native to California.

The <I>Boehmeria argentea</I> tree grows ten to thirty feet tall. The leaves alternated and are eight to ten inches long.

Boehmeria Argentea

The Boehmeria argentea tree grows ten to thirty feet tall. The leaves alternated and are eight to ten…

Also known as Toxylon pomiferum. The branch of a Bois D'Arc tree, native to Texas.

Branch of Bois D'Arc

Also known as Toxylon pomiferum. The branch of a Bois D'Arc tree, native to Texas.

"Boldoa fragrans. 1. a section of the ripe fruit; 2. the embryo shown separately." -Lindley, 1853

Boldo

"Boldoa fragrans. 1. a section of the ripe fruit; 2. the embryo shown separately." -Lindley, 1853

Also known as Salix bonplandiana. The branch of a Bonpland Willow, native to southern and southwest Mexico.

Branch of Bonpland Willow

Also known as Salix bonplandiana. The branch of a Bonpland Willow, native to southern and southwest…

<I>Borassus flabellifer</I> is known as meelalia or palmyra palm. The palm tree grows sixty to seventy feet tall. The leaves are eight to ten feet long.

Borassus Flabellifer

Borassus flabellifer is known as meelalia or palmyra palm. The palm tree grows sixty to seventy feet…

This decorative border was designed by German Artist Albrecht D&uuml;rer in 1513. It is comprised of a pillar on each side of the border, scrolling ribbon at the top, and two angels holding a shield of a tree on the bottom.

Decorative Border

This decorative border was designed by German Artist Albrecht Dürer in 1513. It is comprised of…

This decorative border was designed by German Artist Albrecht D&uuml;rer in 1513. It is comprised of a pillar on each side of the border, scrolling ribbon at the top, and two angels holding a shield of a tree on the bottom.

Decorative Border

This decorative border was designed by German Artist Albrecht Dürer in 1513. It is comprised of…

"Peach tree borer, female moth." &mdash;Davison, 1906

Peach Tree Borer

"Peach tree borer, female moth." —Davison, 1906

"Peach tree borer, pupae." &mdash;Davison, 1906

Peach Tree Borer

"Peach tree borer, pupae." —Davison, 1906

"Peach tree borer, pupae." &mdash;Davison, 1906

Peach Tree Borer

"Peach tree borer, pupae." —Davison, 1906

"Peach tree borer, larva." &mdash;Davison, 1906

Peach Tree Borer

"Peach tree borer, larva." —Davison, 1906

"Peach tree borer, chip cocoon with extruded pupa skin." &mdash;Davison, 1906

Peach Tree Borer

"Peach tree borer, chip cocoon with extruded pupa skin." —Davison, 1906

The leaf of Common Box (Buxus sempervirens) showing emarginations.

Common Box

The leaf of Common Box (Buxus sempervirens) showing emarginations.

Boy climbing a ladder of subtraction problems.

Boy Climbing Ladder

Boy climbing a ladder of subtraction problems.

An illustration of a boy climbing a tree.

Boy Climbing Tree

An illustration of a boy climbing a tree.

An illustration of a young boy laying underneath a tree reading.

Boy Reading

An illustration of a young boy laying underneath a tree reading.

An illustration of a young boy sitting against a tree.

Young Boy Sitting

An illustration of a young boy sitting against a tree.

Boys sitting on a wall

Boys Sitting

Boys sitting on a wall

A branch from a black mulberry with fruits and leaves. The plant have both male and female flowers are used for reproduction by pollination.

Black Mulberry Branch with Fruits and Leaves

A branch from a black mulberry with fruits and leaves. The plant have both male and female flowers are…

Image of a tree reaching for sunlight

Tree Branch

Image of a tree reaching for sunlight

"D. Brasiliensis is exceedingly handsome for the center of a vase or stand, forming a beautiful object, with its fine, broad, recurving foliage."&mdash;Heinrich, 1887

Dracaena Brasiliensis

"D. Brasiliensis is exceedingly handsome for the center of a vase or stand, forming a beautiful object,…

This image of a giant Brazilian Tree shows about fifteen men with arms outstretched are needed to embrace on tree.

Brazilian Trees

This image of a giant Brazilian Tree shows about fifteen men with arms outstretched are needed to embrace…

Also known as Picea breweriana. A species of spruce tree native to western North America.

Brewer Spruce Pine Cone

Also known as Picea breweriana. A species of spruce tree native to western North America.

"1. fruit of Brexia madagascariensis; 2. a cross section of it; 3. a seed; 4. the same divided perpendicularly." -Lindley, 1853

Brexia

"1. fruit of Brexia madagascariensis; 2. a cross section of it; 3. a seed; 4. the same divided perpendicularly."…

The brexia madagascariensis tree grows to be twenty feet tall. The flowers are green. This tree is found in Madagascar.

Flowering Branch of Brexia Madagascariensis

The brexia madagascariensis tree grows to be twenty feet tall. The flowers are green. This tree is found…

Also known as Thrinax microcarpa. A small palm native to Florida and the Caribbean.

Branch of Brittle Thatch Palm

Also known as Thrinax microcarpa. A small palm native to Florida and the Caribbean.

A running brook.

Brook

A running brook.

The Brook, a painting by Thomas Gainsborough.

The Brook

The Brook, a painting by Thomas Gainsborough.

"Alder Buckthorn. Buckthorn, the name of an extensive genus of trees and shrubs, order Rhamnaceae." -Vaughan, 1906

Alder Buckthorn

"Alder Buckthorn. Buckthorn, the name of an extensive genus of trees and shrubs, order Rhamnaceae."…

The bud inserted.

The Bud, Inserted

The bud inserted.

A bud ready for insertion, and the T-shaped cut ready to receive it.

Bud, Ready for Insertion

A bud ready for insertion, and the T-shaped cut ready to receive it.

The budding completed

The budding, complete

The budding completed

Also known as Pinus ponderosa. The pine cone of a Bull Pine tree.

Pine Cone of Bull Pine

Also known as Pinus ponderosa. The pine cone of a Bull Pine tree.

Also known as Quercus macrocarpa. The branch of the Bur Oak tree, native to North America.

Branch of Bur Oak

Also known as Quercus macrocarpa. The branch of the Bur Oak tree, native to North America.

Also known as Sabal palmetto. The branch of a palmetto palm tree.

Branch of Cabbage Palmetto

Also known as Sabal palmetto. The branch of a palmetto palm tree.

"Cocoa. a.-- branch with leaves; b.-- fruit (partly in section). Cacao (or Cocoa), the chocolate tree and also the powder and beverage made with it obtained from the fruit of this tree." -Vaughan, 1906

Cacao Fruit and Leaves

"Cocoa. a.-- branch with leaves; b.-- fruit (partly in section). Cacao (or Cocoa), the chocolate tree…

The typical representation of cactus on a topographical map.

Cactus

The typical representation of cactus on a topographical map.

An illustration of a Calabash tree and ways to utilize the shell of the fruit it produces. Crescentia (Calabash tree, huingo, krabasi, or kalebas) is a genus of six species of flowering plants in the family Bignoniaceae, native to southern Florida, the Caribbean, southern Mexico, Central America and northern South America. The species are small trees growing to 10 m tall, and producing large spherical fruits up to half a meter in diameter.

Calabash Tree

An illustration of a Calabash tree and ways to utilize the shell of the fruit it produces. Crescentia…