A capital letter A with a leafy decoration.

Leafy Capital A

A capital letter A with a leafy decoration.

"Abutilon macropodum. 1. an unexpanded flower; 2. the stamens and styles; 3. a ripe fruit, consisting of many carpels, whose upper extremities are free and radiant." -Lindley, 1853

Abutilon

"Abutilon macropodum. 1. an unexpanded flower; 2. the stamens and styles; 3. a ripe fruit, consisting…

Natural form of the acanthus leaf.

Acanthus Leaf

Natural form of the acanthus leaf.

Acanthus leaf artistically modified.

Acanthus Leaf

Acanthus leaf artistically modified.

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

Acer

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

Acer

"A maple-tree, prob. so called from its pointed leaves. ex. Sugar maple"-Whitney, 1902

"Bixa orellana. 1. a pistil and two stamens; 2. a cross section of the ovary; 3. a ripe fruit. 4. a cross section of a seed." -Lindley, 1853

Achiote

"Bixa orellana. 1. a pistil and two stamens; 2. a cross section of the ovary; 3. a ripe fruit. 4. a…

"Acicarpha spathulata. 1. section of an entire flower; 2. perpendicular section of ripe fruit." -Lindley, 1853

Acicarpha

"Acicarpha spathulata. 1. section of an entire flower; 2. perpendicular section of ripe fruit." -Lindley,…

A plant which produces numerous flowers with oblong white petals. The leaves and stems are slightly hairy. They are commonly found in central and southern Europe.

Ranunculus Aconitifolius

A plant which produces numerous flowers with oblong white petals. The leaves and stems are slightly…

The acroterium is the pedestal on the angle or apex of a pediment, intended as a base for sculpture. (D & E)

Acroterium

The acroterium is the pedestal on the angle or apex of a pediment, intended as a base for sculpture.…

Also known as Butcher's broom. A shrub with flat shoots that give the appearance of stiff, spine-tipped leaves. It has been known to enhance blood flow to the brain, legs, and hands, and has been used to relieve constipation and water retention.

Ruscus Aculeatus

Also known as Butcher's broom. A shrub with flat shoots that give the appearance of stiff, spine-tipped…

Tapering at the end.

Acuminate

Tapering at the end.

Terminating with a sharp point.

Acute

Terminating with a sharp point.

Adder-Tongue, Ophioglossum: spore-cases in a kind of spike: <em>a</em>, a portion of the fruiting part , above natural size; showing two rows of the firm spore-cases, which open transversely into two selves.

Adder-Tongue

Adder-Tongue, Ophioglossum: spore-cases in a kind of spike: a, a portion of the fruiting part…

"Adder's tongue fern (Ophioglossum vulgatum L.). R, runner or stolon." -Gager, 1916

Southern Adderstongue

"Adder's tongue fern (Ophioglossum vulgatum L.). R, runner or stolon." -Gager, 1916

Marlea begonifolia or Alangium chinense is an evergreen tree native in China used for its medicinal purposes.

Alangium

Marlea begonifolia or Alangium chinense is an evergreen tree native in China used for its medicinal…

Also known as Salix alaxensis. The branch of an Alaska Willow tree, a species of willow.

Branch of Alaska Willow

Also known as Salix alaxensis. The branch of an Alaska Willow tree, a species of willow.

"Aldrovanda vesiculosa. Whorl of Leaves." &mdash; The Encyclopedia Britannica, 1893

Aldrovanda

"Aldrovanda vesiculosa. Whorl of Leaves." — The Encyclopedia Britannica, 1893

This shows the leaf of the Almondleaf Willow, Salix amygdaloides, (Keeler, 1915).

Almondleaf Willow Leaf

This shows the leaf of the Almondleaf Willow, Salix amygdaloides, (Keeler, 1915).

The branch of an Alnus oregona, a species of alder tree.

Branch of Alnus Oregona

The branch of an Alnus oregona, a species of alder tree.

The branch of an Alnus sitchensis, a species of Alder tree.

Branch of Alnus Sitchensis

The branch of an Alnus sitchensis, a species of Alder tree.

Alpinia vittata, meaning striped alpinia, has broad stripes of dark green and creamy white on the pale green leaves. The leaves are six to eight inches long.

Alpinia Vittata

Alpinia vittata, meaning striped alpinia, has broad stripes of dark green and creamy white on the pale…

Usually pertains to leaves. Not opposite each other but bourne singly at different levels on the stem.

Alternate

Usually pertains to leaves. Not opposite each other but bourne singly at different levels on the stem.

Alternate leaves, in Linden, Lime-tree, or Basswood.

Alternate Leaves

Alternate leaves, in Linden, Lime-tree, or Basswood.

An American beech leaf.

American Beech Leaf

An American beech leaf.

Also known as Castanea dentata. The branch of an American Chestnut tree, native to eastern North America.

Branch of American Chestnut

Also known as Castanea dentata. The branch of an American Chestnut tree, native to eastern North America.

A leaf from an American elm tree.

American Elm Leaf

A leaf from an American elm tree.

Also known as Carpinus caroliniana. The branch of an American Hornbeam, native to eastern North America.

Branch of American Hornbeam

Also known as Carpinus caroliniana. The branch of an American Hornbeam, native to eastern North America.

Also known as Salix discolor. The branch of an American Willow, native throughout North America.

Branch of America Willow

Also known as Salix discolor. The branch of an American Willow, native throughout North America.

A perennial flower with white petals and green foliage. They tend to bloom in April and May, and are found in the Western Alps.

Ranunculus Amplexicaulis

A perennial flower with white petals and green foliage. They tend to bloom in April and May, and are…

Diagram of analogous scorpioid cyme, with alternate leaves or bracts.

Analogous Scorpioid Cyme

Diagram of analogous scorpioid cyme, with alternate leaves or bracts.

The image depicts the flower and portion of a leaf of the Pitcairnia andreana. The petals are yellow at the tip with red at the bottom.

Pitcairnia Andreana

The image depicts the flower and portion of a leaf of the Pitcairnia andreana. The petals are yellow…

Flower of Anemone Pennsylvanica; apetalous, hermaphrodite

Anemone Pennsylvanica

Flower of Anemone Pennsylvanica; apetalous, hermaphrodite

The flowers of Archangelica officinalis, or the Garden Angelica, a flowering plant in the Apiaceae family.

Garden Angelica

The flowers of Archangelica officinalis, or the Garden Angelica, a flowering plant in the Apiaceae family.

This letter A with angels is designed with the angels playing a trumpet and a sea shell in the background. All around are leaves and flowers.

Letter A with Angels

This letter A with angels is designed with the angels playing a trumpet and a sea shell in the background.…

A decorative divider with wheat in the center, surrounded by dogs, rabbits, and other plants.

Animal Divider

A decorative divider with wheat in the center, surrounded by dogs, rabbits, and other plants.

"Annularia. A fossil plant allied to the Calamites." -Taylor, 1904

Annularia

"Annularia. A fossil plant allied to the Calamites." -Taylor, 1904

The pollen-bearing portion of a stamen.

Anther

The pollen-bearing portion of a stamen.

Diagram of the lower part of an anther, cut across above, and the upper part of a leaf, to show how the one answers to the other; the filament to petiole, the connective to midrib; the two cells to the right and left halves of the blade.

Anther

Diagram of the lower part of an anther, cut across above, and the upper part of a leaf, to show how…

"Anthodiscus trifoliatus. 1. a flower bud; 2. a flower; 3. a perpendicular section of the pistil." -Lindley, 1853

Anthodiscus

"Anthodiscus trifoliatus. 1. a flower bud; 2. a flower; 3. a perpendicular section of the pistil." -Lindley,…

From left to right: Acuminate, Acute, Obtuse, Truncate, Retuse, Emarginate, Obcordate, Cuspidate, Mucronate.

Apex of Leaves

From left to right: Acuminate, Acute, Obtuse, Truncate, Retuse, Emarginate, Obcordate, Cuspidate, Mucronate.

Aphelandra cristata is a flowering plant shown potted here because it is often used as a houseplant.

Aphelandra

Aphelandra cristata is a flowering plant shown potted here because it is often used as a houseplant.

Section of a smaller apothecium.

Apothecium

Section of a smaller apothecium.

An apple is hanging from a tree.

Apple Tree

An apple is hanging from a tree.

Shoot with its leaves 5-ranked, the sixth leaf over the first; as in the Apple-tree.

Apple-tree

Shoot with its leaves 5-ranked, the sixth leaf over the first; as in the Apple-tree.

"Aquilaria Agallochum. 1. a flower; 2. the same split open; 3. a section of the ovary." -Lindley, 1853

Aquilaria

"Aquilaria Agallochum. 1. a flower; 2. the same split open; 3. a section of the ovary." -Lindley, 1853

The leaves of aralia veitchii are glossy green on top and dark red on the bottom. The leaves have about eleven, slender, wavy, finger-like looking leaflets.

Aralia Veitchii

The leaves of aralia veitchii are glossy green on top and dark red on the bottom. The leaves have about…

Branch of Arbor-Vitae, with awl-shaped and scale-shaped leaves.

Arbor-Vitae

Branch of Arbor-Vitae, with awl-shaped and scale-shaped leaves.

Branchlet of the American Arbor-Vitae, considerably larger than in nature, terminated by its pistillate flowers, each consisting of a single scale (an open pistil), together forming a small cone.

Arbor-Vitae

Branchlet of the American Arbor-Vitae, considerably larger than in nature, terminated by its pistillate…

One of the scales or carpels of the American Arbor-Vitae, the inside exposed to view, showing a pair of ovules on its base.

Arbor-Vitae

One of the scales or carpels of the American Arbor-Vitae, the inside exposed to view, showing a pair…

The Trailing Arbutus (Epigaea repens) is a spreading shrub in Ericaceae family of heaths.

Trailing Arbutus

The Trailing Arbutus (Epigaea repens) is a spreading shrub in Ericaceae family of heaths.

A four-eared fern with fronds ranging between 6 inches and 3 feet in length. They are commonly found in the Tropics.

Pteris Quadriaurita Argyaea

A four-eared fern with fronds ranging between 6 inches and 3 feet in length. They are commonly found…

Also known as Alnus oblongifolia. The branch of an Arizona Alder tree, native to southwestern United States and Mexico.

Branch of Arizona Alder

Also known as Alnus oblongifolia. The branch of an Arizona Alder tree, native to southwestern United…

Also known as Sagittaria sagittifolia. It is a flowering plant that is native to the wetlands of Europe and Asia. The leaves are arrow-shaped and the flowers generally have three white petals with numerous purple stamens.

Arrowhead

Also known as Sagittaria sagittifolia. It is a flowering plant that is native to the wetlands of Europe…

Also known as Salix lasiolepis. The branch of an Arroyo Willow tree, native to western and southwestern North America.

Branch of Arroyo Willow

Also known as Salix lasiolepis. The branch of an Arroyo Willow tree, native to western and southwestern…

A perennial thistle with arching green leaves and edible flowers.

Artichoke

A perennial thistle with arching green leaves and edible flowers.

"Accidental manner of producing a jointed stem in Aspasia epidendroides." -Lindley, 1853

Aspasia

"Accidental manner of producing a jointed stem in Aspasia epidendroides." -Lindley, 1853

Of the Composite family (Compositae), the sharp-leaved wood aster (Aster acuminatus).

Sharp-Leaved Wood Aster

Of the Composite family (Compositae), the sharp-leaved wood aster (Aster acuminatus).

"Roman Ovolo Molding, with Pearl Beading. The ornamentation had to correspond with the massive character of Roman architecture, and consequently became more massive and more copious itself."

Roman Astragal

"Roman Ovolo Molding, with Pearl Beading. The ornamentation had to correspond with the massive character…

"Ornamented Roman Astragal. The ornamentation had to correspond with the massive character of Roman architecture, and consequently became more massive and more copious itself."

Roman Astragal

"Ornamented Roman Astragal. The ornamentation had to correspond with the massive character of Roman…