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"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.

A a type of fruit.

Apocarpous

A a type of fruit.

"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.

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.

"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…

"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

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…

"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;…

The flower of Arrudea clusioides from the family Clusiaceae.

Arrudea

The flower of Arrudea clusioides from the family Clusiaceae.

Tubers of Helianthus tuberosus, called "artichoke."

Artichoke

Tubers of Helianthus tuberosus, called "artichoke."

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.

"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.

"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).

An illustration of a disk-floret of a asteraceae. The family Asteraceae or Compositae (known as the aster, daisy, or sunflower family) is the largest family of flowering plants, in terms of number of species.

Disk-floret of Asteraceae

An illustration of a disk-floret of a asteraceae. The family Asteraceae or Compositae (known as the…

An illustration of a disk-floret of a asteraceae. The family Asteraceae or Compositae (known as the aster, daisy, or sunflower family) is the largest family of flowering plants, in terms of number of species.

Disk-floret of Asteraceae

An illustration of a disk-floret of a asteraceae. The family Asteraceae or Compositae (known as the…

An illustration of a Gynaeceum of a asteraceae. The family Asteraceae or Compositae (known as the aster, daisy, or sunflower family) is the largest family of flowering plants, in terms of number of species.

Gynaeceum of Asteraceae

An illustration of a Gynaeceum of a asteraceae. The family Asteraceae or Compositae (known as the aster,…

An illustration of a inflorescence of a asteraceae. The family Asteraceae or Compositae (known as the aster, daisy, or sunflower family) is the largest family of flowering plants, in terms of number of species.

Inflorescence of Asteraceae

An illustration of a inflorescence of a asteraceae. The family Asteraceae or Compositae (known as the…

"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…

An auxiliary bud, concealed under the hollowed base of the leafstalk, in Buttonwood or Plane-tree.

Auxiliary Bud

An auxiliary bud, concealed under the hollowed base of the leafstalk, in Buttonwood or Plane-tree.

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.

"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…

This shows the staminate flower of the Balsam, Populus balsamifera, (Keeler, 1915).

Balsam Flower

This shows the staminate flower of the Balsam, Populus balsamifera, (Keeler, 1915).

This shows the pistillate flower of the Balsam, Populus balsamifera, (Keeler, 1915).

Balsam Flower

This shows the pistillate flower of the Balsam, Populus balsamifera, (Keeler, 1915).

This shows the fruiting aments of the Balsam, Populus balsamifera, (Keeler, 1915).

Balsam Fruit

This shows the fruiting aments of the Balsam, Populus balsamifera, (Keeler, 1915).

"Impatiens macrochila; 2. a diagram of its flower; 3. its stamens; 4. fruit of I. Balsamina (rose balsam); 5. its embryo." -Lindley, 1853

Large-Lipped Balsam

"Impatiens macrochila; 2. a diagram of its flower; 3. its stamens; 4. fruit of I. Balsamina (rose balsam);…

"Bamboo (<em>Bambusa vulgaris</em>), very much reduced. Grows to 20 to 50 ft. high." &mdash; Encyclopediia Britannica, 1910

Bamboo

"Bamboo (Bambusa vulgaris), very much reduced. Grows to 20 to 50 ft. high." — Encyclopediia…

"Bamboo. a.- upper portion of the stem with foliage. b.- root stem. c.- section of stem. Bamboo, the common name of the arborescent grasses belonging to the genus Bambusa." -Vaughan, 1906

Bamboo

"Bamboo. a.- upper portion of the stem with foliage. b.- root stem. c.- section of stem. Bamboo, the…

"<em>Bambusa arundinacea</em>, in Indian bamboo. 1. Leafy shoot. 2, Branch of inflorescence. 3, Spikelet. 4, Flower." &mdash; Encyclopediia Britannica, 1910

Indian Bamboo

"Bambusa arundinacea, in Indian bamboo. 1. Leafy shoot. 2, Branch of inflorescence. 3, Spikelet.…

Section of a seed of Barberry, showing the straight embryo in the middle of the albumen.

Barberry

Section of a seed of Barberry, showing the straight embryo in the middle of the albumen.

Shoot of common Barberry, showing transition of foliage-leaves to spines.

Barberry

Shoot of common Barberry, showing transition of foliage-leaves to spines.

"Berberis vulgaris. 1. stamen; 2. perpendicular section of a pistil with one stamen and one petal adhering; 3. cross section of the fruit; 4. 5. perpendicular section of the seed of B. bulgaris and B. Aquifolium." -Lindley, 1853

European Barberry

"Berberis vulgaris. 1. stamen; 2. perpendicular section of a pistil with one stamen and one petal adhering;…

"Barley, the name of several cereal plants of the genus Hordeum, order Gramineae (grasses), yielding a grain used as food and also for making malt, from which are prepared beer, porter, and whisky." -Vaughan, 1906

Barley

"Barley, the name of several cereal plants of the genus Hordeum, order Gramineae (grasses), yielding…

This shows the axillary buds on a twig of Basswood, they are alternate like the leaves.

Basswood Buds

This shows the axillary buds on a twig of Basswood, they are alternate like the leaves.

"The bean with its roots in unboiled water will grow for a considerable time, as long as the mineral matter in the water will provide it with food materials. The roots of the plant in the boiled water will quickly die and the whole plant will then wither, because the roots no longer send the water up to the leaves." — Ritchie, 1918

Bean Plant in Jar

"The bean with its roots in unboiled water will grow for a considerable time, as long as the mineral…

The fava bean plant (Vicia faba or Faba vulgaris) is a flowering plant in the Fabaceae family of legumes.

Fava Bean

The fava bean plant (Vicia faba or Faba vulgaris) is a flowering plant in the Fabaceae family of legumes.

"5. locusta of Polypogon monspeliensis; 6. paleae, &c. of the same." -Lindley, 1853

Annual Beard Grass

"5. locusta of Polypogon monspeliensis; 6. paleae, &c. of the same." -Lindley, 1853

"Callicarpa longifolia. 1. flower opened longitudinally; 2. part of fruit of C. americana; 3. its seed." -Lindley, 1853

Beautyberry

"Callicarpa longifolia. 1. flower opened longitudinally; 2. part of fruit of C. americana; 3. its seed."…

"Fagus sylvatica; 1. male catkins; 2. female do.; 3. the latter, with the scales of the involucre stripped off to show the ovaries at the apex; 4. a male flower; 5. a half-grown male with the involucre, now consisting of consolidated scales, forced back; 6. a ripe involucre opening and exposing the nuts; 7. a transverse section of a ripe nut; 8. the same of a young ovary." -Lindley, 1853

Common Beech

"Fagus sylvatica; 1. male catkins; 2. female do.; 3. the latter, with the scales of the involucre stripped…

An illustration of a flowering branch and empty cupule of beech. Beech (Fagus) is a genus of ten species of deciduous trees in the family Fagaceae, native to temperate Europe and North America.

Beech

An illustration of a flowering branch and empty cupule of beech. Beech (Fagus) is a genus of ten species…

This shows the staminate flower of the Beech, (Keeler, 1915).

Beech Flower

This shows the staminate flower of the Beech, (Keeler, 1915).

This shows the pistillate flower of the Beech, (Keeler, 1915).

Beech Flower

This shows the pistillate flower of the Beech, (Keeler, 1915).

This shows the staminate and pistillate flower cluster of the Beech, (Keeler, 1915).

Beech Flower

This shows the staminate and pistillate flower cluster of the Beech, (Keeler, 1915).

"Branch of Common Beech. a.-- flower; b.-- fruit. Beech, the common name of trees well known in various parts of the world, including America, New Zealand, and Terra del Fuego." -Vaughan, 1906

Common Beech

"Branch of Common Beech. a.-- flower; b.-- fruit. Beech, the common name of trees well known in various…

A Beech-nut, cut across.

Beech-nut

A Beech-nut, cut across.

Beginning germination of the Beech, showing the plumule growing before the cotyledons have opened or the root has scarcely formed.

Beech-nut Germination

Beginning germination of the Beech, showing the plumule growing before the cotyledons have opened or…

Older beech with the plumule-leaves developing, and elevated on a long internodes.

Beech-nut Germination Older

Older beech with the plumule-leaves developing, and elevated on a long internodes.

"Casuarina female; 2. male; 3. male flower; 4. female flower; 5. the ripe valves of the calyx, from which the fruit has been taken; 6. a section of the half ripe ovary; 7. a section of the fruit showing the seed and embryo." -Lindley, 1853

Beefwood

"Casuarina female; 2. male; 3. male flower; 4. female flower; 5. the ripe valves of the calyx, from…

"Common Beet. Beet, a genus of plants, nat. order Chenopodiaceae, distinguished by its fruit being enclosed in a tough woody or spongy five-lobed enlarged calyx." -Vaughan, 1906

Common Beet

"Common Beet. Beet, a genus of plants, nat. order Chenopodiaceae, distinguished by its fruit being enclosed…

A leaf-cutting of begonia, well started.

Leaf-cutting of a begonia

A leaf-cutting of begonia, well started.

"Wahlenbergia procumbens. 1. an entire flower; 2. stamens; 3. a stigma; 4. transverse section of the ovary; 5. a vertical section of a seed, showing the embryo." -Lindley, 1853

Bellflower

"Wahlenbergia procumbens. 1. an entire flower; 2. stamens; 3. a stigma; 4. transverse section of the…

The Sessile Bellwort (Uvularia sessilifolia) is a species of bellworts, here showing its sessile leaves.

Sessile Bellwort

The Sessile Bellwort (Uvularia sessilifolia) is a species of bellworts, here showing its sessile leaves.