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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.

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.

Cross section of the ovary of Frost-Weed (Helianthemum), with three parietal placenta, bearing ovules.

Ovary of Frost Weed

Cross section of the ovary of Frost-Weed (Helianthemum), with three parietal placenta, bearing ovules.

Cross-section of an ovary of Hypericum graveolens, the three large placenta meeting in the centre, so as to form a three-celled ovary.

Hypericum graveolens

Cross-section of an ovary of Hypericum graveolens, the three large placenta meeting in the centre, so…

Section of the ovary of a Buttercup, lengthwise, showing its ascending ovule.

Ovary of a Buttercup

Section of the ovary of a Buttercup, lengthwise, showing its ascending ovule.

Section of the ovary of Buckwheat, showing the erect ovule.

Ovary of Buckwheat

Section of the ovary of Buckwheat, showing the erect ovule.

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

Ovary of Anemone

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

Three early stages in the growth of ovule of a Magnolia, showing the forming outer and inner coats, which, even in the later figure have not yet completely enclosed the nucleus.

Ovule of a Magnolia

Three early stages in the growth of ovule of a Magnolia, showing the forming outer and inner coats,…

Longitudinal section of flower of Silene Pennsylvanica, showing stipe between calyx and corolla.

Silene Pennsylvanica

Longitudinal section of flower of Silene Pennsylvanica, showing stipe between calyx and corolla.

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…

Longitudinal section of a young rose-hip.

Rose-hip

Longitudinal section of a young rose-hip.

Enlarged and top-shaped receptacle of Nelumbium, at maturity.

Nelumbium

Enlarged and top-shaped receptacle of Nelumbium, at maturity.

Hypogenous disk in Orange.

Orange

Hypogenous disk in Orange.

Flower of a Buckthorn showing a conspicuous perigynous disk.

Flower of a Buckthorn

Flower of a Buckthorn showing a conspicuous perigynous disk.

Vertical section of a Buckthorn flower.

Flower of a Buckthorn

Vertical section of a Buckthorn flower.

One of the grains younger, seen to be a pistillate flower with calyx becoming fleshy.

Mulberry Grains

One of the grains younger, seen to be a pistillate flower with calyx becoming fleshy.

Cacao is the plant that produces the cacao bean used for making chocolate.

Cacao

Cacao is the plant that produces the cacao bean used for making chocolate.

The doodad is a picture of an unopened flower hanging from its stem.

Doodad

The doodad is a picture of an unopened flower hanging from its stem.

A flower that is used for medicinal purposes, mostly for treatment of bruises.

Arnica

A flower that is used for medicinal purposes, mostly for treatment of bruises.

A plant whose starchy compounds for treating poison arrow wounds

Arrowroot

A plant whose starchy compounds for treating poison arrow wounds

Diagram of an opposite-leaved plant, with a single terminal flower.

Opposite-Leaved

Diagram of an opposite-leaved plant, with a single terminal flower.

Diagram of opposite-leaved plant with a cyne of three flowers; <em>a</em> the first flower, of the main axis: <em>b b</em>, those of branches.

Opposite-Leaved

Diagram of opposite-leaved plant with a cyne of three flowers; a the first flower, of the main…

Diagram of opposite-leaved plant with a cyne of three flowers; <em>a</em> the first flower, of the main axis: <em>b b</em>, those of branches. Flowers of the third order.

Opposite-Leaved

Diagram of opposite-leaved plant with a cyne of three flowers; a the first flower, of the main…

Flower of a Crassula, diagram or ground-plan of same.

Crassula

Flower of a Crassula, diagram or ground-plan of same.

Diagram of flower of Trillium. In this, as in all such diagrams of cross-section of blossoms, the parts of the outer circle represent the calyx; the next, corolla; within, stames (here in two circles of three each, and the cross-section is through the anthers); in the centre, section of three ovaries joined into a compound one of three cells.

Trillium

Diagram of flower of Trillium. In this, as in all such diagrams of cross-section of blossoms, the parts…

Flower of Anemone Pennsylvanica; apetalous, hermaphrodite

Anemone Pennsylvanica

Flower of Anemone Pennsylvanica; apetalous, hermaphrodite

Flower of Saururus or Lizard's-tail; naked, but hermaphrodite.

Saururus

Flower of Saururus or Lizard's-tail; naked, but hermaphrodite.

Flower of Mustard

Mustard

Flower of Mustard

Flower of a Violet

Violet

Flower of a Violet

Flower of a Larkspur

Larkspur

Flower of a Larkspur

Flower of a Monkshood

Monkshood

Flower of a Monkshood

Flower of Datura Stramonium; gamosepalous and gamopetalous.

Datura Stramonium

Flower of Datura Stramonium; gamosepalous and gamopetalous.

A slice of the head of flowers of a Coreopsis, with one tubular perfect flower (a) left standing on the receptacle, with its bractlet or chaff (b), one ligulate and meutral ray-flower (cc), and part of another; (dd), section or bracts or leaves of the involucre.

Coreopsis

A slice of the head of flowers of a Coreopsis, with one tubular perfect flower (a) left standing on…

Diagram of a flower of Linden, showing the calyx valvate and corolla imbricate in the bud, etc.

Linden

Diagram of a flower of Linden, showing the calyx valvate and corolla imbricate in the bud, etc.

Diagram of a Flax-flower; calyx imbricated and corolla convolute in the bud.

Flax-flower

Diagram of a Flax-flower; calyx imbricated and corolla convolute in the bud.

Triphleps insidiosus, the "insidious flower-bug."

Flowerbug

Triphleps insidiosus, the "insidious flower-bug."

Strawberry-weevil, an open strawberry-flower showing the holes eaten by the beetles.

Weevil

Strawberry-weevil, an open strawberry-flower showing the holes eaten by the beetles.

A little boy and his mother looking out the window at rain.

Boy

A little boy and his mother looking out the window at rain.

Cloves are the aromatic dried flower buds of a tree in the family Myrtaceae.

Clove

Cloves are the aromatic dried flower buds of a tree in the family Myrtaceae.

The flower of the primrose scabious, <em>scabious succisa</em>.

Flower of Scabious Succisa

The flower of the primrose scabious, scabious succisa.

"<em>Scabious succisa</em>, the primrose scabious, is a common European plant, which bears purplish-blue flowers." &mdash;Finley, 1917

Primrose succisa

"Scabious succisa, the primrose scabious, is a common European plant, which bears purplish-blue…

"A genus of Old World bulbous plants belonging to the order Lilac&aelig;." &mdash;Finley, 1917

Scilla

"A genus of Old World bulbous plants belonging to the order Lilacæ." —Finley, 1917

A flower of the common scurvey grass.

Flower of scurvey grass

A flower of the common scurvey grass.

"The prunella, or self-heal, is a genus of hardy perennial, herbaceous plants belonging to the order Labiatae."&mdash;Finley, 1917

Prunella

"The prunella, or self-heal, is a genus of hardy perennial, herbaceous plants belonging to the order…