Wheel-shaped and five-lobed corolla of Potato.

Potato

Wheel-shaped and five-lobed corolla of Potato.

Flower of a Camanula or Harebell, with a campanulate or bell-shaped corolla.

Harebell

Flower of a Camanula or Harebell, with a campanulate or bell-shaped corolla.

Corolla of a Phlox, with salver-shaped corolla.

Phlox

Corolla of a Phlox, with salver-shaped corolla.

Dead-Nettle (Lamium), with labiate.

Dead-Nettle

Dead-Nettle (Lamium), with labiate.

Corolla of Snapdragon, with labiate <em>personate</em> corolla.

Snapdragon

Corolla of Snapdragon, with labiate personate corolla.

Corolla of Toad-Flax, with similar corolla spurred at the base.

Toad-Flax

Corolla of Toad-Flax, with similar corolla spurred at the base.

Unguiculate (clawed) petal of a Silene; with a two parted crown.

Silene

Unguiculate (clawed) petal of a Silene; with a two parted crown.

A small Passion-flower, with crown of slender threads.

Passion-flower

A small Passion-flower, with crown of slender threads.

Corolla of a purple Gerardia laid open, showing the four stamens; the cross shows where the fifth stamen would be, if present.

Gerardia

Corolla of a purple Gerardia laid open, showing the four stamens; the cross shows where the fifth stamen…

Corolla, laid open, and stamens of Pentstemon grandiflorus, with a sterile filament in the place of the fifth stamen, and representing it.

Pentstemon Grandiflorus

Corolla, laid open, and stamens of Pentstemon grandiflorus, with a sterile filament in the place of…

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.

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.

Head of flowers of a Coreopsis, divided lengthwise.

Coreopsis

Head of flowers of a Coreopsis, divided lengthwise.

Flax-flower in section; the parts all free,-hypogenous.

Flax-Flower

Flax-flower in section; the parts all free,-hypogenous.

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.

Purslane-flower in section; calyx, petals, stamens adnate to lower half of ovary,-perigynous.

Purslane-flower

Purslane-flower in section; calyx, petals, stamens adnate to lower half of ovary,-perigynous.

Hawthorn-blossom in section; parts adnate to whole face of ovary. and with each other beyond; another grade of perigynous.

Hawthorn Blossom

Hawthorn-blossom in section; parts adnate to whole face of ovary. and with each other beyond; another…

Cranberry-blossom in section; parts epigynous.

Cranberry-Blossom

Cranberry-blossom in section; parts epigynous.

Diagram of papilionaceous flower, with bract below; axis of inflorescence above.

Papilionaceous Flower

Diagram of papilionaceous flower, with bract below; axis of inflorescence above.

Diagram of Violet-flower; showing the relation of parts to bract and axis.

Violet-Flower

Diagram of Violet-flower; showing the relation of parts to bract and axis.

Corolla of Morning Glory laid open, to show the five stamens inserted on it, near the base.

Morning Glory

Corolla of Morning Glory laid open, to show the five stamens inserted on it, near the base.

Style of a Lady's Slipper (Cypripedium), and stamens united with it; the anther of the two good stamens; an abortive stamen, what should be its anther changed into a petal-like body; the stigma.

Lady's Slipper

Style of a Lady's Slipper (Cypripedium), and stamens united with it; the anther of the two good stamens;…

Flower of Lobelia cardinalis, Cardinal flower; corolla making approach to the ligulate form; filaments (<em>st</em>) monadelphous, and anthers (<em>a</em>) syngenesious.

Lobelia cardinalis

Flower of Lobelia cardinalis, Cardinal flower; corolla making approach to the ligulate form; filaments…

Flower of a Mallow, with calyx and corolla cut away; showing monadelphous stamens.

Mallow

Flower of a Mallow, with calyx and corolla cut away; showing monadelphous stamens.

Monadelphous stamens of Lupine.

Lupine

Monadelphous stamens of Lupine.

Diadelphous stamens of a pea-blossom.

Pea-blossom

Diadelphous stamens of a pea-blossom.

One of five stamen-clusters of the flower of American Linden, with accompanying scale.

American Linden

One of five stamen-clusters of the flower of American Linden, with accompanying scale.

Five syngenesious stamens of a Coreopsis.

Coreopsis

Five syngenesious stamens of a Coreopsis.

Stamen of Isopyrum, with innate anther.

Isopyrum

Stamen of Isopyrum, with innate anther.

Of Tulip-tree, with adnate (and extrorse) anther.

Tulip-tree

Of Tulip-tree, with adnate (and extrorse) anther.

Of Evening Primrose, with versatile anther.

Evening Primrose

Of Evening Primrose, with versatile anther.

Stamen of Moonseed, with anther cut across; this 4-celled, or rather 4-locellate.

Stamen of Moonseed

Stamen of Moonseed, with anther cut across; this 4-celled, or rather 4-locellate.

Stamen of Pentstemon pubescens; the two-anther-cells diverging, and almost confluent.

Stamen of Pentstemon

Stamen of Pentstemon pubescens; the two-anther-cells diverging, and almost confluent.

Stamen of Mallow; the anther supposed to answer to that of Pentstemon pubescens, but the cells completely confluent into one.

Stamen of Mallow

Stamen of Mallow; the anther supposed to answer to that of Pentstemon pubescens, but the cells completely…

Very short filament bearing a single anther-cell; it is open from top to bottom, showing the pollen within.

Stamen of Globe Amaranth

Very short filament bearing a single anther-cell; it is open from top to bottom, showing the pollen…

Stamens of the mint family. Of a Monarda: the two anther-cells with bases divergent so that they are transverse to the filament, and their contiguous tips confluent, so as to form one cell opening by a continuous line. Fig 301; Of a Calamintha: the broad connective separating the two cells. Fig 302; Of a Sage (Salvia Texana; with long and slender connective resembling forks of the filament, one bearing a good anther-cell wholly wanting. Fig 304; Of a White Sage, Audibertia grandiflora; the lower fork of connective a mere vestige. Fig. 305; Of another White Sage (A. stachyoides), the lower fork of connective suppressed.

Stamens

Stamens of the mint family. Of a Monarda: the two anther-cells with bases divergent so that they are…

Cells opening by a terminal hole.

Stamens of Pyrola

Cells opening by a terminal hole.

Cells of anther each opening by an uplifted valve.

Stamen of Barberry

Cells of anther each opening by an uplifted valve.

Magnified pollen of a Lily, smooth and oval.

Pollen

Magnified pollen of a Lily, smooth and oval.

Pollen of Echinocystis, grooved lengthwise.

Pollen

Pollen of Echinocystis, grooved lengthwise.

Pollen of Sicyos, with bristly points and smooth bands.

Pollen

Pollen of Sicyos, with bristly points and smooth bands.

Pollen of Musk Plant (Mimulus), with spiral grooves.

Pollen

Pollen of Musk Plant (Mimulus), with spiral grooves.

Pollen of Succory, twelve-sided and dotted.

Pollen

Pollen of Succory, twelve-sided and dotted.

Magnified pollen of Hibiscus and other Mallow plants, beset with prickly projections.

Hibiscus pollen

Magnified pollen of Hibiscus and other Mallow plants, beset with prickly projections.

A plant with large fleshy leaves that yields many products. It is a tall plant with a spiny top that only blossoms after ten to seventy years.

Agave

A plant with large fleshy leaves that yields many products. It is a tall plant with a spiny top that…

A plant that varies in size but always has thick fleshy leaves that are spined. It also contains a juice that is used for medicinal purposes.

Aloe

A plant that varies in size but always has thick fleshy leaves that are spined. It also contains a juice…

A North American poisonous herb. The plant itself usually has a blossom between two large green fleshy leaves. Parts of it are edible.

Mayapple

A North American poisonous herb. The plant itself usually has a blossom between two large green fleshy…

The seed enclosed in the subterraneous pod of the Arachis Hypogaea plant.

Peanut

The seed enclosed in the subterraneous pod of the Arachis Hypogaea plant.

Circaea with angles bearing little lobes.

Circaea

Circaea with angles bearing little lobes.

Evening Primrose, the three lobes as large as the central body.

Evening Primrose

Evening Primrose, the three lobes as large as the central body.

Four grains united, as in most of the Heath family.

Kalmia

Four grains united, as in most of the Heath family.

As it were of three grains or cells united; the lateral empty and light.

Pine Pollen

As it were of three grains or cells united; the lateral empty and light.

Pollen, a pair of pollinia of a Milkweed, Asclepias, attached by stalks to a gland.

Polllinia of a Milkweed

Pollen, a pair of pollinia of a Milkweed, Asclepias, attached by stalks to a gland.

Pollinium of an Orchis (Habenaria), with its stalks attached to a sticky gland.

Polllinia of a Orchis

Pollinium of an Orchis (Habenaria), with its stalks attached to a sticky gland.

Simple pistil of Podophyllum, cut across, showing ovules borne on placenta.

Podophyllum

Simple pistil of Podophyllum, cut across, showing ovules borne on placenta.

Two simple carpals or pistil-leaves, united at the base only, cut across both above and below.

Pistil of Saxifrage

Two simple carpals or pistil-leaves, united at the base only, cut across both above and below.

Compound 3-carpellary pistil of common St. John's-wort, cut across: the three styles separate.

Pistil of common St. John's-wort

Compound 3-carpellary pistil of common St. John's-wort, cut across: the three styles separate.

The same of shrubby St. John's-wort; the three styles as well as ovaries here united into one.

Pistil of shrubby St. John's-wort

The same of shrubby St. John's-wort; the three styles as well as ovaries here united into one.

Compound 3-carpellary pistil of Tradescantia or Spiderwort; the three stigmas as well as styles and ovary completely coalescent into one.

Pistil of Spiderwort

Compound 3-carpellary pistil of Tradescantia or Spiderwort; the three stigmas as well as styles and…

Pistil of a Sandwort, with vertical and transverse section of the ovary: free central placenta.

Pistil of Sandwort

Pistil of a Sandwort, with vertical and transverse section of the ovary: free central placenta.