Unisexual flowers of Castor-oil plant: <em>s</em>, staminate flower; <em>p</em>, pistillate flower.

Castor-oil plant

Unisexual flowers of Castor-oil plant: s, staminate flower; p, pistillate flower.

"Diagram showing tissue-systems in young stem of castor-oil plant (Ricinus communis), as seen in cross-section. ep, epidermis; cor, cortex; p, pith or medulla; b, fibro-vascular bundle; ph, phloem; ca, cambium; x, xylem; ic, interfascicular cambium." -Gager, 1916

Castor-Oil Plant Stem

"Diagram showing tissue-systems in young stem of castor-oil plant (Ricinus communis), as seen in cross-section.…

"The castor-oil plant (Ricinus communis). Portion of cross-section of young stem. co, Cortex; p, pith or medulla; e, epidermis; ph, phloem; ca, cambium; x, xylem. The last three elements compose the fibro-vascular bundle, the cambium being continuous from bundle to bundle; the portion between the bundles is called interfascicular cambium." -Gager, 1916

Castor-Oil Plant Stem

"The castor-oil plant (Ricinus communis). Portion of cross-section of young stem. co, Cortex; p, pith…

Corolla of Catalpa laid open, displaying two good stamens and three abortive ones or vestiges.

Catalpa

Corolla of Catalpa laid open, displaying two good stamens and three abortive ones or vestiges.

One of Catalpa, the kernel cut to show the embryo.

Catalpa

One of Catalpa, the kernel cut to show the embryo.

A catkin arrangement of flowers.

Catkin

A catkin arrangement of flowers.

"The catkin of a willow, a type of spike."&mdash;Finley, 1917

Willow catkin

"The catkin of a willow, a type of spike."—Finley, 1917

The flower and fruit of Chelidonium majus, also known as the greater celandine or tetterwort.

Greater Celandine

The flower and fruit of Chelidonium majus, also known as the greater celandine or tetterwort.

Ideal construction of cellular tissue so formed, in section.

Cellular Tissue

Ideal construction of cellular tissue so formed, in section.

"Centrolepis fascicularis. 1. A head of flowers; 2. a single flower separated; 3. an ovary with the style cut off." -Lindley, 1853

Centrolepis

"Centrolepis fascicularis. 1. A head of flowers; 2. a single flower separated; 3. an ovary with the…

A young Agave Americana, or Century-plant: Fleshly-leaved.

Century-plant

A young Agave Americana, or Century-plant: Fleshly-leaved.

Head of the Button-bush.

Cephalanthus

Head of the Button-bush.

"Chailletia pedunculata. 1. a flower of Moacurra gelonioides; 2. a portion of it; 3. a stamen; 4. the pistil; 5. a vertical section of it; 6. ripe fruit; 7. a section of it; 8. an embryo." -Lindley, 1853

Chailletia

"Chailletia pedunculata. 1. a flower of Moacurra gelonioides; 2. a portion of it; 3. a stamen; 4. the…

"1. Antherid and spore-case of Chara fragilis not much magnified; 2. the same at a later period, after the dehiscence of the antherid; 3. three of the valves which cover the antherid represented at the moment of dehiscence; 4. an empty tube, in which a few antherozoids are left; 5. Anteroizoids." -Lindley, 1853

Chara fragilis

"1. Antherid and spore-case of Chara fragilis not much magnified; 2. the same at a later period, after…

The Chay Root (Oldenlandia umbellata) is a plant native to India used for the red dye that can be extracted from its root. "Shaya-root ... a, flower; b, pistil and calyx." -Whitney, 1911

Chay Root

The Chay Root (Oldenlandia umbellata) is a plant native to India used for the red dye that can be extracted…

A Checkerberry plant, or Aromatic Wintergreen.

Checkerberry

A Checkerberry plant, or Aromatic Wintergreen.

A type of flower.

Chenopodium

A type of flower.

This is the flower of the cherry blossom cut in half to show the ovary, style and stigma.

Cherry Blossom Flower

This is the flower of the cherry blossom cut in half to show the ovary, style and stigma.

Embryo of Cherry,(Gray, 1858).

Cherry Embryo

Embryo of Cherry,(Gray, 1858).

A branch and section of the flower of the Sour Cherry Tree (Prunus cerasus).

Sour Cherry

A branch and section of the flower of the Sour Cherry Tree (Prunus cerasus).

Cherry-flower in section; petals and stamens andante to tube of calyx-perigynous.

Cherry-Flower

Cherry-flower in section; petals and stamens andante to tube of calyx-perigynous.

A complete forking cyme of an Arenaria, or Chickweed.

Chickweed

A complete forking cyme of an Arenaria, or Chickweed.

"Monstrous flower of a Cerastium; 2. the pistil and stamens separate; 3. the ovary forced open to show the origin of the ovules and the nature of the imperfect dissepiments; 4. a monstrous ovule." -Lindley, 1853

Mouse-Ear Chickweed

"Monstrous flower of a Cerastium; 2. the pistil and stamens separate; 3. the ovary forced open to show…

"c, flower of Cerastium longipedunculatum, seen from below: s, a sepal." -Whitney, 1911

Nodding Chickweed

"c, flower of Cerastium longipedunculatum, seen from below: s, a sepal." -Whitney, 1911

"d, calyx, showing the five free sepals" of the Nodding Chickweed (Cerastium nutans) -Whitney, 1911

Nodding Chickweed

"d, calyx, showing the five free sepals" of the Nodding Chickweed (Cerastium nutans) -Whitney, 1911

Seed of a Chickweed, campylotropous.

Seed of a Chickweed

Seed of a Chickweed, campylotropous.

A Chicory flower half cut away, better showing some of the flower.

Chicory

A Chicory flower half cut away, better showing some of the flower.

Small plant of Chondrus crispus, Carrageen Moss; the spots represent the fructification, consisting of numerous tetraspores in bunches in the substance of the plant.

Chondrus Crispus

Small plant of Chondrus crispus, Carrageen Moss; the spots represent the fructification, consisting…

Two of the tetraspores from the Chondrus crispus.

Chondrus Crispus Tetraspores

Two of the tetraspores from the Chondrus crispus.

Circaea with angles bearing little lobes.

Circaea

Circaea with angles bearing little lobes.

"Cissampelos tropaeolifolia. 1. a female flower; 2. a portion of a fruit, with the seed laid bare; 3. a perpendicular section of a fruit." -Lindley, 1853

Cissampelos

"Cissampelos tropaeolifolia. 1. a female flower; 2. a portion of a fruit, with the seed laid bare; 3.…

"Cistus Berthelotianus. 1. a vertical section of ovary and calyx; 2. a seed cut through; the pointed end being the true apex." -Lindley, 1853

Cistus

"Cistus Berthelotianus. 1. a vertical section of ovary and calyx; 2. a seed cut through; the pointed…

Claytonia or Spring Beauty, (Gray, 1858).

Claytonia

Claytonia or Spring Beauty, (Gray, 1858).

"Galium Aparine; 1. a flower; 2. a young fruit without the corolla; 3. a perpendicular section of a ripe fruit." -Lindley, 1853

Cleavers

"Galium Aparine; 1. a flower; 2. a young fruit without the corolla; 3. a perpendicular section of a…

Flower of a Cleome of the section Gynandropsis, showing broadened receptacles to bear petals, lengthened stripe below stamens, and another between these and pistil.

Flower of a Cleome

Flower of a Cleome of the section Gynandropsis, showing broadened receptacles to bear petals, lengthened…

Branch of white clover showing the method of forming new plants.

White clover

Branch of white clover showing the method of forming new plants.

"Erythroxylon. 1. a flower; 2. one of the petals; 3. the pistil with 3 capitate stigmas; 4. a drupe; 5. the embryo." -Lindley, 1853

Coca

"Erythroxylon. 1. a flower; 2. one of the petals; 3. the pistil with 3 capitate stigmas; 4. a drupe;…

The flowering branch of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

Coca

The flowering branch of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

The leaf of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

Coca Leaf

The leaf of the coca plant (Erythroxylon coca) best known for its use in the drug cocaine.

Spine of Cockspur Thorn developed from an auxiliary bud, as the leaf-scar below witnesses: an accessory leaf-bud is seen at its base.

Cockspur Thorn

Spine of Cockspur Thorn developed from an auxiliary bud, as the leaf-scar below witnesses: an accessory…

"Adenocarpus frankenioides. 1. the standard, wings, and keel split open; 2. the stamens; 3. a cross section of a seed; 4. a legume, with a portion of one of the valves turned back." -Lindley, 1853

Codeso del Pico

"Adenocarpus frankenioides. 1. the standard, wings, and keel split open; 2. the stamens; 3. a cross…

These are the pistillate and staminate flowers of Kentucky coffee-tree, (Keeler, 1915).

Coffee-Tree Fowers

These are the pistillate and staminate flowers of Kentucky coffee-tree, (Keeler, 1915).

The Kentucky Coffeetree (Gymnocladus dioicus) is a tree in the Fabaceae family of legumes. It was also known as the synonym Gymnocladus Canadensis. "a, part of male flwer, showing stamens; b, fruit; c, seed." -Whitney, 1911

Kentucky Coffeetree

The Kentucky Coffeetree (Gymnocladus dioicus) is a tree in the Fabaceae family of legumes. It was also…

Aquilegia vulgaris is a perennial plant also known as the European columbine or Granny's Nightcap.

European Columbine

Aquilegia vulgaris is a perennial plant also known as the European columbine or Granny's Nightcap.

"Columellia oblonga. 1. a flower; 2. half an ovary; 3. a fruit." -Lindley, 1853

Columellia

"Columellia oblonga. 1. a flower; 2. half an ovary; 3. a fruit." -Lindley, 1853

"Symphytum officinale; 2. a diagram of its flower; 3. its pistil; 4. the calyx opened, with two of the nuts remaining; 5. a vertical section of a nut." -Lindley, 1853

Comfrey

"Symphytum officinale; 2. a diagram of its flower; 3. its pistil; 4. the calyx opened, with two of the…

Embryo of Common Bean (Phaseolus vulgaris); caulicle bent down over edge of cotyledons.

Common Bean

Embryo of Common Bean (Phaseolus vulgaris); caulicle bent down over edge of cotyledons.

Caulicle well lengthened and root beginning; thick cotyledons partly spreading; plumule (pair of leaves) growing between them.

Common Bean Seedling

Caulicle well lengthened and root beginning; thick cotyledons partly spreading; plumule (pair of leaves)…

Fumitory, or Fumaria, is a genus of herbaceous plants belonging to the order Fumariaceae. The common fumitory of waste ground (F. officinalis) is a European species whose smoke was once thought useful for expelling evil spirits.

Common Fumitory

Fumitory, or Fumaria, is a genus of herbaceous plants belonging to the order Fumariaceae. The common…

A one-celled compound ovary.

Compound Ovary

A one-celled compound ovary.

Compound pistils of two cells.

Compound Pistil

Compound pistils of two cells.

Compound pistils of three cells.

Compound Pistil

Compound pistils of three cells.

Compound pistils of three cells.

Compound Pistil

Compound pistils of three cells.

This shows a conduplicate leaf.

Conduplicate Leaf

This shows a conduplicate leaf.

Each scale of the pine cone is a whole pistillate flower. (Gray, 1858).

Cone

Each scale of the pine cone is a whole pistillate flower. (Gray, 1858).

"Fig. 60. Cones of Abies - From bottom to top, A. grandis (Grand Fir), A. Balsamea (Balsam Fir), A. Picea (Silver Fir)." L.H. Bailey, 1917

Fir Tree Cones

"Fig. 60. Cones of Abies - From bottom to top, A. grandis (Grand Fir), A. Balsamea (Balsam Fir), A.…

The growing end of a branching Conferva (Cladophora glomerata), showing how, by a kind of budding growth, a new cell is formed by a cross partition separating the newer tip from the older part below; also, how the branches arise.

Conferva

The growing end of a branching Conferva (Cladophora glomerata), showing how, by a kind of budding growth,…

This shows a convolute leaf.

Convolute Leaf

This shows a convolute leaf.

A type of flower.

Convolvulus

A type of flower.

The Aechmea fulgens of coralberry is a bromeliad which is often used as a decorative plant.

Coralberry

The Aechmea fulgens of coralberry is a bromeliad which is often used as a decorative plant.