The sexual system of a plant, here having stamens and pistils in two different flowers of the same plant, Monoecia.

Linnaeus' Monoecia

The sexual system of a plant, here having stamens and pistils in two different flowers of the same plant,…

The sexual system of a plant, here having stamens and pistils on two different plants, Dioecia.

Linnaeus' Dioecia

The sexual system of a plant, here having stamens and pistils on two different plants, Dioecia.

The sexual system of a plant, here having both hermaphrodite and unisexual flowers on the same plant, Polygamia.

Linnaeus' Polygamia

The sexual system of a plant, here having both hermaphrodite and unisexual flowers on the same plant,…

The sexual system of a plant, here having hidden reproductive organs, Cryptogamia.

Linnaeus' Cryptogamia

The sexual system of a plant, here having hidden reproductive organs, Cryptogamia.

The sexual system of a plant, here having four stamens, Tetrandria.

Linnaeus' Tetrandria

The sexual system of a plant, here having four stamens, Tetrandria.

The sexual system of a plant, here having five stamens and one pistil, Pentandria.

Linnaeus' Pentandria

The sexual system of a plant, here having five stamens and one pistil, Pentandria.

The sexual system of a plant, here having six stamens and one pistil, Hexandria.

Linnaeus' Hexandria

The sexual system of a plant, here having six stamens and one pistil, Hexandria.

The sexual system of a plant, here having seven stamens, Heptandria.

Linnaeus' Heptandria

The sexual system of a plant, here having seven stamens, Heptandria.

The sexual system of a plant, here having eight stamens, Octandria.

Linnaeus' Octandria

The sexual system of a plant, here having eight stamens, Octandria.

The sexual system of a plant, here having nine stamens, Enneandria.

Linnaeus' Enneandria

The sexual system of a plant, here having nine stamens, Enneandria.

"Litsaea Baueri. 1. a male flower; 2. a female; 3. a stamen, with a gland at the base; 4. an anther, with the recurved valves; 5. a cluster of fruit; 6. a cotyledon seen from within, with the plumule adhering to the inner face." -Lindley, 1853

Litsea

"Litsaea Baueri. 1. a male flower; 2. a female; 3. a stamen, with a gland at the base; 4. an anther,…

"Byttneria celtoides. 1. an expanded flower; 2. cup of stamens; 3. abortive stamen; 4. pistil." -Lindley, 1853

Mallow

"Byttneria celtoides. 1. an expanded flower; 2. cup of stamens; 3. abortive stamen; 4. pistil." -Lindley,…

"Arctostaphylos pungens. 1. a stamen; 2. a cross section of an ovary." -Lindley, 1853

Pointleaf Manzanita

"Arctostaphylos pungens. 1. a stamen; 2. a cross section of an ovary." -Lindley, 1853

"Cocculus macrocarpus. 1. male flower; 2. a petal and stamen; 3. a cluster of fruit; 4. seed; 5. section of ditto showing embryo." -Lindley, 1853

Moonseed

"Cocculus macrocarpus. 1. male flower; 2. a petal and stamen; 3. a cluster of fruit; 4. seed; 5. section…

"Eugenia tuberculata. 1. a flower; 2. the same divided vertically; 3. a stamen; 4. a ripe fruit; 5. a leaf with the dots upon it." -Lindley, 1853

Myrtle

"Eugenia tuberculata. 1. a flower; 2. the same divided vertically; 3. a stamen; 4. a ripe fruit; 5.…

"Napoleona imperialis. 1. a flower-bud just expanding; 2. the fleshy cup, and table-shaped stigma; 3. an expanded flower of the natural size; 4. a perpendicular section of the same. (In this the artist has carelessly added a fourth ring to the corolla on the outside of the stamens; no such ring exists); 5. a perpendicular section of the ovary; 6. an ovule; 7. a ripe seed; 8. a stamen; 9. a transverse section of the ovary." -Lindley. 1853

Napoleon's Hat

"Napoleona imperialis. 1. a flower-bud just expanding; 2. the fleshy cup, and table-shaped stigma; 3.…

A simple flower.

Flower Parts

A simple flower.

A simple flower.

Flower Parts

A simple flower.

The whole stamen of a Lily

Flower Parts

The whole stamen of a Lily

Cross section of the anatomy of a pea blossom.

Pea blossom

Cross section of the anatomy of a pea blossom.

the compound pistil of Mallow magnified.

Pistil

the compound pistil of Mallow magnified.

Pistil and stamens of a shepherd's purse.

Pistil and stamens of shepherd's purse

Pistil and stamens of a shepherd's purse.

The circulation of protoplasm (p) in a cell of the stamen-hair of Tradescania. In the channels the granules move back and forth to the various parts of the cell. The remainder of the cell is filled with cell-sap (s) which in these cells is colored.

Protoplasm

The circulation of protoplasm (p) in a cell of the stamen-hair of Tradescania. In the channels the granules…

"Proliferous or monstrous Rose, showing the prolongation of the axis beyond the flower. C, calyx transformed into leaves; P. petals multiplied at the expense of the stamens, which are reduced in number; F, colored leaves representing abortive carpels; A, axis prolonged, bearing an imperfect flower at its apex." — Encyclopedia Britanica, 1893

Rose

"Proliferous or monstrous Rose, showing the prolongation of the axis beyond the flower. C, calyx transformed…

"Diagram of the flower of Saxifrage (Saxifraga tridactylites). The calyx and corolla consist of five parts, the stamens are ten in two rows, while the pistil has only two parts developed. The flower is, neertheless, called symmetrical, although the outer whorls are pentamerous, and the central one dimerous." — Encyclopedia Britanica, 1893

Saxifrage

"Diagram of the flower of Saxifrage (Saxifraga tridactylites). The calyx and corolla consist of five…

"Euphorbia corollata. A, flower-cluster with involucre, the whole appearing like a single flower; B, a single staminate flower; C, immature fertile flower, as seen after the removal of the sterile flowers; i, involucre; s, stigmas." -Bergen, 1896

Flowering Spurge

"Euphorbia corollata. A, flower-cluster with involucre, the whole appearing like a single flower; B,…

Embryo of squash.

Squash

Embryo of squash.

Embryo of squash, seen edgewise.

Squash

Embryo of squash, seen edgewise.

The stamen of the Papaw, (Gray, 1858).

Stamen

The stamen of the Papaw, (Gray, 1858).

Stamens of Mallow united in a tube.

Stamen

Stamens of Mallow united in a tube.

Compound flower anatomy. 10, stamens.

Stamen

Compound flower anatomy. 10, stamens.

A stamen, with the anther opening, of the Barberry, (Gray, 1858).

Barberry Stamen

A stamen, with the anther opening, of the Barberry, (Gray, 1858).

Stamen of the flower of the Morning Glory.

Morning Glory Stamen

Stamen of the flower of the Morning Glory.

Stamen of a Star of Bethlehem.

Stamen of Star of Bethlehem

Stamen of a Star of Bethlehem.

"Styrax leiophylla. 1. a flower natural size; 2. ditto cut open; 3. stamen seen in front; 4. ovary, with half the calyx removed; 5. longitudinal section of ovary; 6. transverse ditto; 7. ripe fruit; 8. longitudinal section of seed." -Lindley, 1853

Styrax

"Styrax leiophylla. 1. a flower natural size; 2. ditto cut open; 3. stamen seen in front; 4. ovary,…

"Diagram of flower of Sweet-pea (Lathyrus), showing five parts of the calyx, of which two are superior, one inferior, and two lateral; five parts of the corolla, of which one is superior, two inferior, and two lateral; ten stamens in two rows; one carpel, in consequence of four being undeveloped." — Encyclopedia Britanica, 1893

Sweet-pea

"Diagram of flower of Sweet-pea (Lathyrus), showing five parts of the calyx, of which two are superior,…

"Symplocos laxiflora. 1. expanded flower; 2. corolla cut open; 3. a stamen; 4. longitudinal section of ovary; 5. transverse ditto; 6. ripe fruit; 7. longitudinal section of ditto." -Lindley, 1853

Symplocos

"Symplocos laxiflora. 1. expanded flower; 2. corolla cut open; 3. a stamen; 4. longitudinal section…

An illustration showing a "floral diagram of [the' Viola [plant], showing arrangement of parts in horizontal plan. b, pair of bractoeles below the flower; s, sepals; p, petals; st, stamens; o, ovary" (Britannica, 102).

Viola Diagram

An illustration showing a "floral diagram of [the' Viola [plant], showing arrangement of parts in horizontal…

Echium vulgare (Viper's Bugloss) is a species of Echium native to most of Europe, and western and central Asia. It is a biennial or monocarpic perennial plant growing to 30-80 cm tall, with rough, hairy, lanceolate leaves. The flowers start pink and turn vivid blue and are 15-20 mm in a branched spike, with all the stamens protruding. Stamens remain red and stand out against the blue flowers. It flowers between May and September. It is found in dry, bare and waste places.

Viper's Bugloss Corolla and Stamens

Echium vulgare (Viper's Bugloss) is a species of Echium native to most of Europe, and western and central…

"Catkins of willow. A, staminate flowers; B, pistillate flowers." -Bergen, 1896

Willow Catkin

"Catkins of willow. A, staminate flowers; B, pistillate flowers." -Bergen, 1896

"Flowers of willow. A, staminate flower; B, pistillate flower." -Bergen, 1896

Willow Flowers

"Flowers of willow. A, staminate flower; B, pistillate flower." -Bergen, 1896