574 illustrations of flowers and shrubs including: acacia, acanthus, adder's tongue, agave, alfalfa, alisma, allspice, aloe, anacharis, aristolochia, arnica, arrowhead, arrowroot, artichoke, asparagus, aster, azalea, and azolla

"Inflorescence of Aquilegia vulgaris (garden columbine). a, flower; b, same, cut vertically; c, pistils."-Whitney, 1902

Aquilegia

"Inflorescence of Aquilegia vulgaris (garden columbine). a, flower; b, same, cut vertically; c, pistils."-Whitney,…

The stem of <I>Aquilegia alpina</I> is nearly one foot tall. The plant has two to five flowers. The flowers are blue, rarely pale or white.

Aquilegia Alpina

The stem of Aquilegia alpina is nearly one foot tall. The plant has two to five flowers. The flowers…

Aquilegia is known as Columbine.  The caerulea variety has several blue and white flowers on each stem. The flowers are usually tinited with lilac or red. This flower grows in the Rocky Mountains.

Aquilegia Caerulea Flowers

Aquilegia is known as Columbine. The caerulea variety has several blue and white flowers on each stem.…

The flowers of aquilegia canadensis are red mixed with yellow. The flowers are less than one inch in diameter. The flower grows between April and June.

Aquilegia Canadensis Habit and Flower

The flowers of aquilegia canadensis are red mixed with yellow. The flowers are less than one inch in…

The common name of aquilegia canadensis is common columbine. The plant grows one to two feet tall. There are several flowers to a stem. The flowers are yellow tinted with red.

Aquilegia Canadensis

The common name of aquilegia canadensis is common columbine. The plant grows one to two feet tall. There…

Pictured are radical leaves of aquilegia canadensis, common name common columbine. The leaves are one to two inches and have three divisions.

Radical Leaves of Aquilegia Canadensis

Pictured are radical leaves of aquilegia canadensis, common name common columbine. The leaves are one…

<I>Aquilegia chrysantha</I> grows between three and four feet tall. There are many flowers on the plant. The flowers are two to three inches across and are yellow tinted with red.

Aquilegia Chrysantha

Aquilegia chrysantha grows between three and four feet tall. There are many flowers on the plant. The…

The sepals, or outer part of the aquilegia glandulosa flower, are a bright lilac blue. The petals are white.

Aquilegia Glandulosa Flower

The sepals, or outer part of the aquilegia glandulosa flower, are a bright lilac blue. The petals are…

<I>Aquilegia glandulosa</I> is one to three flowered. The flowers are large and nodding. The flowers are lilac-blue topped with creamy white.

Aquilegia Glandulosa

Aquilegia glandulosa is one to three flowered. The flowers are large and nodding. The flowers are lilac-blue…

The <I>Aquilegia longissima</I> plant is tall and covered in silky hairs. The flowers are pale yellow. The leaflets are deeply lobed and cut.

Aquilegia Longissima

The Aquilegia longissima plant is tall and covered in silky hairs. The flowers are pale yellow. The…

The flowers of aquilegia olympica are large and mauve blue. The petals are white and are much shorter than the sepals.

Aquilegia Olympica Habit and Flower

The flowers of aquilegia olympica are large and mauve blue. The petals are white and are much shorter…

The aquilegia sibirica flower is bright lilac with very blunt sepals. The limb of the petals are sometimes white. This flower grows in Siberia.

Aquilegia Sibirica Flore-Pleno Habit and Flower

The aquilegia sibirica flower is bright lilac with very blunt sepals. The limb of the petals are sometimes…

The common name of arabis is rock-cress. The albida variety is only a few inches tall. The plant is covered in short, fine hairs. The lower leaves are narrow at the base.

Arabis Albida

The common name of arabis is rock-cress. The albida variety is only a few inches tall. The plant is…

Arabis is commonly known as Wall Cress and Rock Cress. The alpina variety has white flowers. It grows from March to May.

Arabis Alpina Habit and Flowers

Arabis is commonly known as Wall Cress and Rock Cress. The alpina variety has white flowers. It grows…

The flowers of arabis arenosa, also known as wall cress and rock cress, are rose colored. They grow from April to July. They can be found in central Europe.

Habit and Flowers of Arabis Arenosa

The flowers of arabis arenosa, also known as wall cress and rock cress, are rose colored. They grow…

"Cuckoo-pint, or Wake-robin (Arum maculatum). a, spadix; b, stamens or male flowers; c, ovaries; d, spathe;"-Whitney, 1902

Araceæ

"Cuckoo-pint, or Wake-robin (Arum maculatum). a, spadix; b, stamens or male flowers; c, ovaries; d,…

Pictured from the araceae order are (1) arisaema, spathe and spadix, and (2) arum spadix with male and female flowers. Pictured from the lemnaceae order are (3) lemna, (3a) whole plants, and (3b) male and female flowers, and spathe. Pictured from the bromeliaceae order is (4) bromelia flower, (5) ananas, (5a) fruiting inflorescence, and (5b) floral diagram. Pictured from the commelinaceae order is (6) commelina flower and (7) tradescantia flower.

Araceae, Lemnaceae, Bromeliaceae, and Commelinaceae Orders

Pictured from the araceae order are (1) arisaema, spathe and spadix, and (2) arum spadix with male and…

"A genus of plants of the natural order Leguminosae, sub-order Papilionaceae, natives of the warm parts of America, of which, until recently, the only known species was the A. hypogaea, sometimes called the underground kidney-bean, and more frequently the ground-nut. It also receives the names of earth-nut, American earth-nut, and mandubi." &mdash; Chambers' Encyclopedia, 1875

Arachis

"A genus of plants of the natural order Leguminosae, sub-order Papilionaceae, natives of the warm parts…

Arachis is commonly know as Ground or Earth Nut. Arachis Hypogaea is known as Monkey Nut. The flowers are yellow with five to seven growing together.

Leaf, Flower, and Clusters of Arachis Hypogaea

Arachis is commonly know as Ground or Earth Nut. Arachis Hypogaea is known as Monkey Nut. The flowers…

The aralia chinensis flower is white. The leaves have a leathery texture. This plant grows between five and six feet high.

Aralia Chinensis Flowers

The aralia chinensis flower is white. The leaves have a leathery texture. This plant grows between five…

The leaves of aralia veitchii are glossy green on top and dark red on the bottom. The leaves have about eleven, slender, wavy, finger-like looking leaflets.

Aralia Veitchii

The leaves of aralia veitchii are glossy green on top and dark red on the bottom. The leaves have about…

Pictured are flowers of the orders araliaceae and umbelliferae. The flowers of these orders that are illustrated include (1) aralia, (2) hedera, (3) cicutat, (4) foeniculum, (5) artedia, and (6) apium. (7) represents the fruits of umbelliferae.

Orders of Araliaceae and Umbelliferae

Pictured are flowers of the orders araliaceae and umbelliferae. The flowers of these orders that are…

"Araucaria imbricata: End of a branch, much reduced, showing the mode of ramification, and the manner in which the leaves are imbricated." &mdash; Chambers' Encyclopedia, 1875

Araucaria Imbricata

"Araucaria imbricata: End of a branch, much reduced, showing the mode of ramification, and the manner…

"Araucaria imbricata: Sketched in the Botanic Gardens, Edinburgh." &mdash; Chambers' Encyclopedia, 1875

Araucaria Imbricata

"Araucaria imbricata: Sketched in the Botanic Gardens, Edinburgh." — Chambers' Encyclopedia, 1875

"A genus of plants of the natural order Coniferae, allied to the cypress, and consisting of evergreen trees and shrubs with compressed or flattened branchlets-small, scale-like, imbricated leaves-and monaecious flowers, which have 4-celled anthers, and the scales of the strobiles with two upright ovules." &mdash; Chambers' Encyclopedia, 1875

Arbor Vitae

"A genus of plants of the natural order Coniferae, allied to the cypress, and consisting of evergreen…

An evergreen shrub with bright red flowers. It usually reaches between 20 and 25 feet, and is commonly found in Thailand, Nepal, and India.

Rhododendron Arboreum

An evergreen shrub with bright red flowers. It usually reaches between 20 and 25 feet, and is commonly…

Arbutus is in the class of plants and shrubs allied to the cypress.

Arbutus

Arbutus is in the class of plants and shrubs allied to the cypress.

Of the Heath family (Ericaceae), the trailing arbutus (Epigaea repens).

Trailing Arbutus

Of the Heath family (Ericaceae), the trailing arbutus (Epigaea repens).

The Trailing Arbutus (Epigaea repens) is a spreading shrub in Ericaceae family of heaths.

Trailing Arbutus

The Trailing Arbutus (Epigaea repens) is a spreading shrub in Ericaceae family of heaths.

Mature but unopened archegonium. e, Ovum; b, ventral-canal cell; d, lid-cells of neck

Archegonia

Mature but unopened archegonium. e, Ovum; b, ventral-canal cell; d, lid-cells of neck

Archegonium ready for fertilization; a passage leads down to the rounded ovum

Archegonia

Archegonium ready for fertilization; a passage leads down to the rounded ovum

Archegonium after fertilization; the fertilized ovum is developing into a sporogonium

Archegonia

Archegonium after fertilization; the fertilized ovum is developing into a sporogonium

The <I>Arctostaphylos manzanita</I> shrub grows thirty feet tall. The fruit is between one quarter and one half an inch long. The leaves are dull green and egg shaped.

Arctostaphylos Manzanita

The Arctostaphylos manzanita shrub grows thirty feet tall. The fruit is between one quarter and one…

<I>Arctotis grandis</I> forms a bushy clump between two and two and a half feet tall. The flowers are white or white and pale violet.

Arctotis Grandis

Arctotis grandis forms a bushy clump between two and two and a half feet tall. The flowers are white…

<I>Ardisia crenulata</I> has oblong, wavy margined leaves. The fruit droops is clusters. The flowers are sweet scented.

Ardisia Crenulata

Ardisia crenulata has oblong, wavy margined leaves. The fruit droops is clusters. The flowers are sweet…

<I>Aregelia spectabilis</I> has leaves that are ten to fifteen inches long. The flowers are milky, pale blue.

Aregelia Spectabilis

Aregelia spectabilis has leaves that are ten to fifteen inches long. The flowers are milky, pale blue.

<I>Arenaria grandiflora</I> grows ten inches or less high. The flowers are large and grow solitary or in twos or threes.

Arenaria Grandiflora

Arenaria grandiflora grows ten inches or less high. The flowers are large and grow solitary or in twos…

<I>Arethusa bulbosa</I> is a pretty orchid that grows between eight and ten inches tall. The flowers is a bright, rose-pink.

Arethusa Bulbosa

Arethusa bulbosa is a pretty orchid that grows between eight and ten inches tall. The flowers is a bright,…

<I>Argemone grandiflora</I> grows one to three feet tall and has very few prickles. Three to six flowers grow together. The flowers are four inches across.

Argemone Grandiflora

Argemone grandiflora grows one to three feet tall and has very few prickles. Three to six flowers grow…

The argemone grandiflora has large, white flowers. The tips of the stamens are yellow. It does not flower until October.

Inflorescence of Argemone Grandiflora

The argemone grandiflora has large, white flowers. The tips of the stamens are yellow. It does not flower…

The common name of <I>Argemone mexicana</I> is prickly poppy. The plant grow one to two feet tall. The flowers are orange or lemon colored. The plant has a moderately prickly stem.

Argemone Mexicana

The common name of Argemone mexicana is prickly poppy. The plant grow one to two feet tall. The flowers…

A four-eared fern with fronds ranging between 6 inches and 3 feet in length. They are commonly found in the Tropics.

Pteris Quadriaurita Argyaea

A four-eared fern with fronds ranging between 6 inches and 3 feet in length. They are commonly found…

A garden plant known for its dark green foliage.

Fittonia Argyroneura

A garden plant known for its dark green foliage.

The <I>Ariocarpus lloydii</I> plant has a rounded top that is four inches or more in diameter. The flowers are purple and slightly longer than one inch.

Ariocarpus Lloyd

The Ariocarpus lloydii plant has a rounded top that is four inches or more in diameter. The flowers…

The arisaema triphylla flower has four to six inch long spathes. The spathes are striped with lines of purplish-brown

Arisaema Triphylla Flower

The arisaema triphylla flower has four to six inch long spathes. The spathes are striped with lines…

The common names of <I>Arisaema triphyllum</I> are Jack-in-the-pulpit and Indian turnip. There are usually two leaves with oval leaflets. The spadix is club shaped.

Arisaema Triphyllum

The common names of Arisaema triphyllum are Jack-in-the-pulpit and Indian turnip. There are usually…

A yellow flower with small pink florets. They are generally around 1 foot in height.

Podolepis Aristata

A yellow flower with small pink florets. They are generally around 1 foot in height.

"A genus of plants of the natural order Aristolochiaceae. This order, which is dicotyledonous or exogenous, consists of herbaceous plants or shrubs, orten climbing shrubs, and contains upwards of 130 known species, chiefly natives of warm climates, and particularly abundant in the tropical regions of South America." &mdash; Chambers' Encyclopedia, 1875

Aristolochia

"A genus of plants of the natural order Aristolochiaceae. This order, which is dicotyledonous or exogenous,…

"A genus of plants of the natural order Aristolochiaceae. This order, which is dicotyledonous or exogenous, consists of herbaceous plants or shrubs, orten climbing shrubs, and contains upwards of 130 known species, chiefly natives of warm climates, and particularly abundant in the tropical regions of South America." &mdash; Chambers' Encyclopedia, 1875

Aristolochia

"A genus of plants of the natural order Aristolochiaceae. This order, which is dicotyledonous or exogenous,…

The common names of <I>Aristolochia grandiflora</I> are pelican flower, goose flower, swan flower, and duck flower. The flower bud is said to resemble the body and neck of a bird.

Aristolochia Grandiflora

The common names of Aristolochia grandiflora are pelican flower, goose flower, swan flower, and duck…

The leaves of <I>Aristolochia grandiflora</I> are heart shaped. The leaves taper to a point. The common names of aristolochia grandiflora are pelican flower, swan flower, goose flower, and duck flower.

Aristolochia Grandiflora

The leaves of Aristolochia grandiflora are heart shaped. The leaves taper to a point. The common names…

The common names of <I>Aristolochia macrophylla</I> are dutchman's pipe and pipe vine. The flowers are u-shaped and purplish. The flowers are enlarged above the ovary. The ovary is labeled "a" and the swelling of the calyx-tube is labeled "b".

Aristolochia Macrophylla

The common names of Aristolochia macrophylla are dutchman's pipe and pipe vine. The flowers are u-shaped…

Pictured is the longitudinal section of <I>Aristolochia macrophylla</I>. Shown is the ovary and the short column of stamens. The common names of the plant are dutchman's pipe and pipe vine.

Aristolochia Macrophylla

Pictured is the longitudinal section of Aristolochia macrophylla. Shown is the ovary and the short column…

The Aristolochia shrub is commonly known as Birthwort. The sipho variety has yellowish-brown flowers. This shrub can grow up to thirty feet high.

Flowering Branch of Aristolochia Sipho

The Aristolochia shrub is commonly known as Birthwort. The sipho variety has yellowish-brown flowers.…

Shown are the Aristolochiaceae, Polygonaceae, Chenopodiaceae, and Amarantaceae orders. Also illustrated are the asarum, aristolochia, fagopyrum, chenopodium, and achyranthes flowers of these orders.

Aristolochiaceae, Polygonaceae, Chenopodiaceae, and Amarantaceae Orders

Shown are the Aristolochiaceae, Polygonaceae, Chenopodiaceae, and Amarantaceae orders. Also illustrated…

The common name of <I>Armeria vulgarism</I> is common thrift. The flowers are white, pink, or red. The leaves are linear.

Armeria Vulgaris

The common name of Armeria vulgarism is common thrift. The flowers are white, pink, or red. The leaves…

This plant belongs to caryophyllaceae.

Silene Armeria

This plant belongs to caryophyllaceae.

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.

Of the Composite family (Compositae), the arnica (Arnica mollis var. petiolaris).

Arnica

Of the Composite family (Compositae), the arnica (Arnica mollis var. petiolaris).

"A genus of plants belonging to the natural order compositae, sub-order Corymbiferae. The flowers of the ray are female and ligulate, those of the disk hermaphrodite and tubular. The receptacle is naked; the pappus hairy. The root, leaves, and flowers of the Mountain Tobacco are much valued in medicine, and administers in various forms as a stimulant in paralytic affections, typhoid fevers, and other diseases." &mdash; Chambers' Encyclopedia, 1875

Arnica Montana

"A genus of plants belonging to the natural order compositae, sub-order Corymbiferae. The flowers of…