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Section of the ovary of Anemone, showing its suspended ovule.

Ovary of Anemone

Section of the ovary of Anemone, showing its suspended ovule.

"A genus of plants of the natural order Umbelliferae, by some botanists divided into two: A., and Archangelica. The species are mostly herbaceous and perennial, natives of the temperate and colder regions of the northern hemisphere. They have bipinnate or tripinnate leaves." — Chambers' Encyclopedia, 1875

Angelica

"A genus of plants of the natural order Umbelliferae, by some botanists divided into two: A., and Archangelica.…

The flower of a species of Angelica, a flowering plant in the Apiaceae family.

Angelica

The flower of a species of Angelica, a flowering plant in the Apiaceae family.

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.

A large plant with whitish-green fronds reaching up to a foot in height.

Polypodium Angustatum

A large plant with whitish-green fronds reaching up to a foot in height.

Anise is a well-known plant that resembles dill or carraway but is more fragrant.

Anise

Anise is a well-known plant that resembles dill or carraway but is more fragrant.

"Anona furfuracea. 1. an expanded flower; 2. a vertical section of male and female apparatus, which latter occupies the centre; 3. a vertical section of a carpel; 4. ditto of a ripe seed, showing the ruminated albumen and embryo." -Lindley, 1853

Annona

"Anona furfuracea. 1. an expanded flower; 2. a vertical section of male and female apparatus, which…

Annual Honesty (Lunaria annua) is a tall (height about 1 m), hairy-stemmed biennial plant found throughout Europe, North America, and parts of Asia. It has large, pointed oval leaves with marked serrations. The common name "Honesty" arose in the 16th century, and it may be due to the translucent seed-pods which are like flattened pea-pods and borne on the plant through winter. In South-East Asia and elsewhere, it is called the Money Plant, because its seed pods have the appearance of silver coins. In the United States it may also be known as "Silver Dollars," also because of the seed pods.

Annual Honesty

Annual Honesty (Lunaria annua) is a tall (height about 1 m), hairy-stemmed biennial plant found throughout…

The pollen-bearing portion of a stamen.

Anther

The pollen-bearing portion of a stamen.

Anther of a prunella plant.

Prunella anther

Anther of a prunella plant.

"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,…

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.

"Perpendicular section of the fruit of Pyrus malus." -Lindley, 1853

Apple

"Perpendicular section of the fruit of Pyrus malus." -Lindley, 1853

The flower of the apple tree.

Apple (flower)

The flower of the apple tree.

"Aptandra Spruceana. 1. an expanded flower; 2. a petal; 3. tube of stamens, with 4 petaloid glands at the base; 4. pistil; 5. section of ovary." -Lindley, 1853

Aptandra

"Aptandra Spruceana. 1. an expanded flower; 2. a petal; 3. tube of stamens, with 4 petaloid glands at…

"An aquarium well filled and stocked with plants, fish, etc., is one of the finest ornaments one can have in the room."—Heinrich, 1887

The Aquarium

"An aquarium well filled and stocked with plants, fish, etc., is one of the finest ornaments one can…

"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

A group of trees or shrubs native to North America and Europe.

Ar'butus

A group of trees or shrubs native to North America and Europe.

"A genus of plants of the natural order Leguminosae, sub-order Papilionaceae, natives of the warm parts of America, of which, until recently, the only known species was the A. hypogaea, sometimes called the underground kidney-bean, and more frequently the ground-nut. It also receives the names of earth-nut, American earth-nut, and mandubi." — Chambers' Encyclopedia, 1875

Arachis

"A genus of plants of the natural order Leguminosae, sub-order Papilionaceae, natives of the warm parts…

This perennial is of the sempervivum family; featuring furry central rosettes.

Sempervivum Arachnoideum

This perennial is of the sempervivum family; featuring furry central rosettes.

An evergreen shrub with bright red flowers. It usually reaches between 20 and 25 feet, and is commonly found in Thailand, Nepal, and India.

Rhododendron Arboreum

An evergreen shrub with bright red flowers. It usually reaches between 20 and 25 feet, and is commonly…

Arbutus is in the class of plants and shrubs allied to the cypress.

Arbutus

Arbutus is in the class of plants and shrubs allied to the cypress.

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.

Arcyria flava (or Arcyria obvelata) is a species of fungus or slime mold found in Australia.

Arcyria flava

Arcyria flava (or Arcyria obvelata) is a species of fungus or slime mold found in Australia.

"1. Aretia Vitaliana; 2. a flower cut open; 3. the pistil; 4. a vertical section of the latter, showing the free central placenta; 5. a section of a seed." -Lindley, 1853

Aretia

"1. Aretia Vitaliana; 2. a flower cut open; 3. the pistil; 4. a vertical section of the latter, showing…

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 Cupressus arizonica. A species of cypress found in the southwest of North America.

Branch of Arizona Cypress

Also known as Cupressus arizonica. A species of cypress found in the southwest of North America.

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 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…

A species of beet, with a deep blood-red flesh and smooth skin.

Arlington Favorite

A species of beet, with a deep blood-red flesh and smooth skin.

"Arnotto-extremely common in Jamaica and other parts of the West Indies, and has been introduced into tropical regions of the old world."-Whitney, 1902

Arnotto

"Arnotto-extremely common in Jamaica and other parts of the West Indies, and has been introduced into…

"Triglochin palustre. 1. A flower; 3. a ripe fruit; 4. one ripe carpel opened and exhibiting a seed; 5. embryo." -Lindley, 1853

Arrowgrass

"Triglochin palustre. 1. A flower; 3. a ripe fruit; 4. one ripe carpel opened and exhibiting a seed;…

Arrowroot, or obedience plant (Maranta arundinacea), is a large perennial herb of genus Maranta found in rainforest habitats. Arrowroot is also the name of the edible starch from the rhizomes (rootstock) of West Indian arrowroot.

Arrowroot

Arrowroot, or obedience plant (Maranta arundinacea), is a large perennial herb of genus Maranta found…

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…

The flower of Arrudea clusioides from the family Clusiaceae.

Arrudea

The flower of Arrudea clusioides from the family Clusiaceae.

A species of sunflower cultivated for its tuber, which is used as a root vegetable.

Jerusalem Artichoke

A species of sunflower cultivated for its tuber, which is used as a root vegetable.

Arum maculatum: "A single fruit divided vertically, so as to show the seeds in situ. A perpendicular section of one of the seeds." -Lindley, 1853

Wild Arum Fruit and Seed

Arum maculatum: "A single fruit divided vertically, so as to show the seeds in situ. A perpendicular…

"1. Spathe of Arum maculatum; 2. its spadix loaded with flowers; 3. an anther; 4. a transverse section of an ovary; 5. a cluster of ripe fruits; 6. a seed; 7. a section of the same, showing the embryo." -Lindley, 1853

Wild Arum

"1. Spathe of Arum maculatum; 2. its spadix loaded with flowers; 3. an anther; 4. a transverse section…

Arum maculatum or the wild arum is a woodland plant of the Araceae family.

Wild Arum

Arum maculatum or the wild arum is a woodland plant of the Araceae family.

Plants not woody.

Arundinaria

Plants not woody.

"Asarum Europæum, formerly used as a purgative and an emetic."-Whitney, 1902

Asarum

"Asarum Europæum, formerly used as a purgative and an emetic."-Whitney, 1902

"Shields of Baeomyces rufus." -Lindley, 1853

Asci

"Shields of Baeomyces rufus." -Lindley, 1853

Aseroe pentactina is a species of mushroom from the Phallaceae family.

Aseroe

Aseroe pentactina is a species of mushroom from the Phallaceae family.

A plant belonging to the torenia genus, a common greenhouse plant.

Torenia Asiatica

A plant belonging to the torenia genus, a common greenhouse plant.

A spring vegetable native to most of Europe, northern Africa, and western Asia.

Bunch of Asparagus

A spring vegetable native to most of Europe, northern Africa, and western Asia.

"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

The female flowers of a catkin from the Common Aspen (Populus tremula).

Common Aspen

The female flowers of a catkin from the Common Aspen (Populus tremula).

"7. Asterostemma repandum; 8. its coronet; 9. its pollen masses." -Lindley, 1853

Asterostemma

"7. Asterostemma repandum; 8. its coronet; 9. its pollen masses." -Lindley, 1853

"Athamanta cervariaefolia. 1. a separate flower, with hairy petals; 2. a petal by itself; 3. a ripe fruit with the two carpels or mericarps separating from the double carpopod or axis; 4. a seed deprived of its integuments, and divided vertically, so as to show the position of the embryo." -Lindley, 1853

Athamantha

"Athamanta cervariaefolia. 1. a separate flower, with hairy petals; 2. a petal by itself; 3. a ripe…

Also known as Chamaecyparis thyoides. Native to the eastern part of the United States.

Branch of Atlantic White Cypress

Also known as Chamaecyparis thyoides. Native to the eastern part of the United States.

Slenderly tapering; long drawn-out.

Attenuate

Slenderly tapering; long drawn-out.

A true lily that is native to Japan. The flower color is white with gold radial markings and orange spots. They are the largest and strongest-scented of any of the lily species.

Lilium Auratum

A true lily that is native to Japan. The flower color is white with gold radial markings and orange…

Also known as the cabbage tree. They are endemic to New Zealand and can grow up to 66 feet in height. The trunk is stout and the leaves are sword-like.

Dracaena Australis

Also known as the cabbage tree. They are endemic to New Zealand and can grow up to 66 feet in height.…

A bristle-like appendage.

Awn

A bristle-like appendage.

The angle formed by a leaf with the stem.

Axil

The angle formed by a leaf with the stem.

Spikelets arranged along rachis with back of fruit away from rachis; rachis 3-sided.

Axonopus

Spikelets arranged along rachis with back of fruit away from rachis; rachis 3-sided.

The Ayapana (Ayapana triplinervis) is a flowering shrub in the Asteraceae family of daisies.

Ayapana

The Ayapana (Ayapana triplinervis) is a flowering shrub in the Asteraceae family of daisies.

The Azalea is a genus of plants that belongs to the health family. There are 100 species that have wonderful, fragrant flowers.

Azalea

The Azalea is a genus of plants that belongs to the health family. There are 100 species that have wonderful,…

"Lophira alata. a an anther; b a perpendicular section of an ovary; e a fruit; d a perpendicular section of a fruit." -Lindley, 1853

Azobe

"Lophira alata. a an anther; b a perpendicular section of an ovary; e a fruit; d a perpendicular section…

Plant body of small overlapping scales.

Azolla

Plant body of small overlapping scales.