Also known as Quercus breviloba. The branch of a Shallow-lobed Oak tree, native to the southern United States and northern Mexico.

Branch of Shallow-Lobed Oak

Also known as Quercus breviloba. The branch of a Shallow-lobed Oak tree, native to the southern United…

The branch of a Quercus undulata tree, a species of oak. Native to the southwestern United States.

Branch of Quercus Undulata

The branch of a Quercus undulata tree, a species of oak. Native to the southwestern United States.

Also known as Quercus arizonica. The branch of an Arizona White Oak, native to the southwest United States.

Branch of Arizona White Oak

Also known as Quercus arizonica. The branch of an Arizona White Oak, native to the southwest United…

Also known as Quercus toumeyi. The branch of a Toumey Oak tree, native to Mexico and the United States.

Branch of Toumey Oak

Also known as Quercus toumeyi. The branch of a Toumey Oak tree, native to Mexico and the United States.

Also known as Quercus virginiana. The branch of a Southern Live Oak tree, native to the southeastern United States.

Branch of Southern Live Oak

Also known as Quercus virginiana. The branch of a Southern Live Oak tree, native to the southeastern…

Also known as Quercus emoryi. The branch of an Emory Oak tree, native to the southwestern United States.

Branch of Emory Oak

Also known as Quercus emoryi. The branch of an Emory Oak tree, native to the southwestern United States.

Also known as Ulmus thomasii. The branch of a Rock Elm tree, native to the midwestern United States.

Branch of Rock Elm

Also known as Ulmus thomasii. The branch of a Rock Elm tree, native to the midwestern United States.

Also known as Ulmus alata. The branch of a Winged Elm tree, native to the southern United States.

Branch of Winged Elm

Also known as Ulmus alata. The branch of a Winged Elm tree, native to the southern United States.

Also known as Ulmus serotina. A branch of a September Elm tree, native to a select few states in North America.

Branch of September Elm

Also known as Ulmus serotina. A branch of a September Elm tree, native to a select few states in North…

Also known as Planera aquatica. The branch of a Water Elm tree, native to the southeastern United States.

Branch of Water Elm

Also known as Planera aquatica. The branch of a Water Elm tree, native to the southeastern United States.

Also known as Celtis occidentalis. A branch of a Common Hackberry tree, native among the central United States.

Branch of Common Hackberry

Also known as Celtis occidentalis. A branch of a Common Hackberry tree, native among the central United…

The branch of a Celtis mississippiensis tree, native to the limestone hills in the United States.

Branch of Celtis Mississippiensis

The branch of a Celtis mississippiensis tree, native to the limestone hills in the United States.

Also known as Morus rubra. The branch of a Red Mulberry tree, native to eastern North America, from Ontario and Vermont to southern Florida.

Branch of Red Mulberry

Also known as Morus rubra. The branch of a Red Mulberry tree, native to eastern North America, from…

Also known as Coccolobis uvifera. A branch of a Sea Grape plant, native throughout tropical America and the Caribbean.

Branch of Sea Grape

Also known as Coccolobis uvifera. A branch of a Sea Grape plant, native throughout tropical America…

A branch of a Coccoloba laurifolia tree.

Branch of Coccoloba Laurifolia

A branch of a Coccoloba laurifolia tree.

Also known as Magnolia grandiflora. The branch and flower of a Southern Magnolia plant, native to the southern United States.

Flower of Southern Magnolia

Also known as Magnolia grandiflora. The branch and flower of a Southern Magnolia plant, native to the…

Also known as Magnolia virginiana. The branch of a Sweetbay Magnolia plant, native to the southeastern coast of the United States.

Branch of Sweetbay Magnolia

Also known as Magnolia virginiana. The branch of a Sweetbay Magnolia plant, native to the southeastern…

Also known as Magnolia acuminata. The branch of a Cucumber tree, native to the northeastern United States and Southern Ontario Canada.

Branch of Cucumber Tree

Also known as Magnolia acuminata. The branch of a Cucumber tree, native to the northeastern United States…

Also known as Magnolia macrophylla. The branch of a Bigleaf Magnolia tree, native to the southeastern United States and eastern Mexico.

Branch of Bigleaf Magnolia

Also known as Magnolia macrophylla. The branch of a Bigleaf Magnolia tree, native to the southeastern…

Also known as Magnolia tripetala. The branch of an Umbrella Magnolia tree, native to the southeastern United States in the Appalachian Mountains region.

Branch of Umbrella Magnolia

Also known as Magnolia tripetala. The branch of an Umbrella Magnolia tree, native to the southeastern…

Also known as Magnolia fraseri. The branch of a Fraser Magnolia tree, native to the southeastern United States.

Branch of Fraser Magnolia

Also known as Magnolia fraseri. The branch of a Fraser Magnolia tree, native to the southeastern United…

Also known as Liriodendron tulipifera. A branch of a Yellow Poplar tree, native throughout North America.

Branch of Yellow Poplar

Also known as Liriodendron tulipifera. A branch of a Yellow Poplar tree, native throughout North America.

Also known as Annona glabra. A branch of a Pond-Apple tree, native to the southeast United States and the Caribbean.

Branch of Pond-Apple

Also known as Annona glabra. A branch of a Pond-Apple tree, native to the southeast United States and…

Also known as Hamamelis virginiana. The branch of a Witch Hazel shrub, native to the eastern United States.

Branch of Witch Hazel

Also known as Hamamelis virginiana. The branch of a Witch Hazel shrub, native to the eastern United…

Also known as Platanus occidentalis. The branch of an American Sycamore tree, native throughout the central and eastern parts of the United States.

Branch of American Sycamore

Also known as Platanus occidentalis. The branch of an American Sycamore tree, native throughout the…

Also known as Platanus racemosa. The branch of a Western Sycamore tree, native to California.

Branch of Western Sycamore

Also known as Platanus racemosa. The branch of a Western Sycamore tree, native to California.

Also known as Platanus wrightii. The branch of an Arizona Sycamore, native to Arizona and New Mexico.

Branch of Arizona Sycamore

Also known as Platanus wrightii. The branch of an Arizona Sycamore, native to Arizona and New Mexico.

Also known as Vauquelinia californica. The branch of an Arizona Rosewood tree, native to the southwestern United States.

Branch of Arizona Rosewood

Also known as Vauquelinia californica. The branch of an Arizona Rosewood tree, native to the southwestern…

The branch of a Lyonothamnus tree, which is native to the Channel Islands of California.

Branch of Lyonothamnus

The branch of a Lyonothamnus tree, which is native to the Channel Islands of California.

Also known as Malus angustifolia. The branch of a Southern Crabapple tree, native throughout the Southeastern United States.

Branch of Southern Crabapple

Also known as Malus angustifolia. The branch of a Southern Crabapple tree, native throughout the Southeastern…

Also known as Malus coronaria. The branch of a Sweet Crabapple tree, native to the southern United States.

Branch of Sweet Crabapple

Also known as Malus coronaria. The branch of a Sweet Crabapple tree, native to the southern United States.

Also known as Malus ioensis. A branch of a Prairie Crabapple tree native to the regions of the upper Mississippi Valley.

Branch of Prairie Crabapple

Also known as Malus ioensis. A branch of a Prairie Crabapple tree native to the regions of the upper…

The branch of a Malus rivularis tree, native throughout the northwestern coast of the United States.

Branch of Malus Rivularis

The branch of a Malus rivularis tree, native throughout the northwestern coast of the United States.

Also known as Heteromeles arbutifolia. The branch of a Toyon tree, native to California.

Branch of Toyon

Also known as Heteromeles arbutifolia. The branch of a Toyon tree, native to California.

Also known as Amelanchier canadensis. The branch of a Juneberry bush, native to eastern North America, primarily Canada.

Branch of Juneberry

Also known as Amelanchier canadensis. The branch of a Juneberry bush, native to eastern North America,…

The branch of an Amelanchier obovalis tree, native to North America.

Branch of Amelanchier Obovalis

The branch of an Amelanchier obovalis tree, native to North America.

The apple tree is a strikingly handsome tree when in flower. The apple is known as the Crab in its wild state. The apple tree in native to the United Kingdom and the warmer parts of Europe.

Apple Blossom

The apple tree is a strikingly handsome tree when in flower. The apple is known as the Crab in its wild…

This trap for codlin grubs are two, three, or more thin pieces of board that are twelve to twenty inches long and two to four inches wide with a screw through the center. Slips of wood are inserted between the board to keep them open so the grubs can enter. This was invented in the United States.

Apple or Codlin Grub Trap

This trap for codlin grubs are two, three, or more thin pieces of board that are twelve to twenty inches…

Frames are portable garden structures useful for large quantities of different subjects that have to be prepared for transplanting outside. Span frames have the advantage of giving more height inside.

Three-Quarter Span-Roof Frame

Frames are portable garden structures useful for large quantities of different subjects that have to…

The primary leafstalk of lygodium palmatum is very slender, about an eighth of an inch to a quarter of an inch long. This fern can be found on the east coast of the United States, from Massachusetts to Florida.

Lygodium Palmatum

The primary leafstalk of lygodium palmatum is very slender, about an eighth of an inch to a quarter…

In the cross section from the ovary of the primrose flower the carpels are completely united. The carpels form a ring in the section.

Cross Section from Ovary of Primrose Flower

In the cross section from the ovary of the primrose flower the carpels are completely united. The carpels…

The ovary of astragalus is composed of several united carpels. Each carpel is divided into two cavities.

Cross Section of Nearly Ripe Pod of Astragalus

The ovary of astragalus is composed of several united carpels. Each carpel is divided into two cavities.

Pictured is an apple orchard at bearing age. This type of apple orchard is seen in the northeastern states.

Apple Orchard

Pictured is an apple orchard at bearing age. This type of apple orchard is seen in the northeastern…

The <I>Arctostaphylos manzanita</I> shrub grows thirty feet tall. The fruit is between one quarter and one half an inch long. The leaves are dull green and egg shaped.

Arctostaphylos Manzanita

The Arctostaphylos manzanita shrub grows thirty feet tall. The fruit is between one quarter and one…

The common name of <I>Asplenium nidus</> is bird's nest fern. The fern has entire margined leaves. The veins are partly united to form a net.

Asplenium Nidus

The common name of Asplenium nidus is bird's nest fern. The fern has entire margined leaves. The veins…

The branching type of China aster was first introduced in 1893. It is likely that more than half of asters grown in the United States are branching types.

The Branching Type of China Aster

The branching type of China aster was first introduced in 1893. It is likely that more than half of…

The American robin is protected in the United States. It is an insect eating bird.

American Robin

The American robin is protected in the United States. It is an insect eating bird.

Illustrated is an improved chicory root. Chicory is native to Europe but has been naturalized in the United States.

Improved Chicory Root

Illustrated is an improved chicory root. Chicory is native to Europe but has been naturalized in the…

Chicory is the common name of cichorium intybus. It is a familiar weed along roadsides in the eastern part of the United States. The flowers are bright blue.

Chicory Flower

Chicory is the common name of cichorium intybus. It is a familiar weed along roadsides in the eastern…

Coreopsis lanceolata grows one to two feet tall. The leaves are few and large. It is native to the eastern United States.

Coreopsis Lanceolata

Coreopsis lanceolata grows one to two feet tall. The leaves are few and large. It is native to the eastern…

Mexican fire plant is the common name of euphorbia heterophylla. It is native in a range from the eastern and central United States to Peru. The leaves are dark green, with some bright red at the base.

Mexican Fire Plant

Mexican fire plant is the common name of euphorbia heterophylla. It is native in a range from the eastern…

Illustrated is a young plant of caper spurge, seen endwise. Caper spurge is also known as mole plant. It grows two to three feet tall. It is native to the eastern United States.

Caper Spurge

Illustrated is a young plant of caper spurge, seen endwise. Caper spurge is also known as mole plant.…

Cypress spurge is the common name of euphorbia cyparissias. It has many short, plume like branches. It is native to Europe. It is naturalized and a weed in the United States.

Cypress Spurge

Cypress spurge is the common name of euphorbia cyparissias. It has many short, plume like branches.…

Illustrated is a design of modern formal treatment of the immediate surrounding of a house on a large estate in the United States.

Modern Formal Treatment

Illustrated is a design of modern formal treatment of the immediate surrounding of a house on a large…

Wild chamomile is the common name of matricaria chamomila. The flowers are white. The plant is found in the fields of Europe and North Asia. It also runs wild in the eastern United States.

Wild Chamomile

Wild chamomile is the common name of matricaria chamomila. The flowers are white. The plant is found…

Spearmint is the common name of <i>mentha spicata</i>. It is native to Europe and Asia but has been naturalized throughout the older settled parts of the United States.

Spearmint

Spearmint is the common name of mentha spicata. It is native to Europe and Asia but has been naturalized…

<i>Morchella esculenta</i> is a common mushroom and is found in the central states. They appear after the warm rains of the spring.

Morchella Esculenta

Morchella esculenta is a common mushroom and is found in the central states. They appear after the warm…

The flowers of <i>nymphaea tuberosa</i> are pure white, four to nine inches across, and open for three or four days, from 8 A.M. to 1 P.M. It is native to the northern, central United States.

Nymphaea Tuberosa

The flowers of nymphaea tuberosa are pure white, four to nine inches across, and open for three or four…

An image summarizing Pascal's law, which states that pressure of a liquid is equal in all directions provided that the pressure ratio is the same.

Pascal's Law

An image summarizing Pascal's law, which states that pressure of a liquid is equal in all directions…

Orthorhombic Iron Disulphide (Marcasite) sometimes shows cyclic groups of five individuals, bounded by ∞ P, {110} (M); P∞&#774;, {011} (l); and 0P, {001}, and united into a pentagonal figure by (M) as twinning plane.

Marcasite

Orthorhombic Iron Disulphide (Marcasite) sometimes shows cyclic groups of five individuals, bounded…