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Amazon lily is the common name of the eucharis plant. Pictured is the leaf of E. grandiflora and the flowers of (a) E. subedentat, (b) E. sanderi, (c) E. grandiflora, and (d) E. candida.

Amazon Lily

Amazon lily is the common name of the eucharis plant. Pictured is the leaf of E. grandiflora and the…

A perennial flower with white petals and green foliage. They tend to bloom in April and May, and are found in the Western Alps.

Ranunculus Amplexicaulis

A perennial flower with white petals and green foliage. They tend to bloom in April and May, and are…

The flowers of amsonia salicifolia grow at the end of each stem in clusters. The flowers are a light blue color.

Habit and Flower of Amsonia Salicifolia

The flowers of amsonia salicifolia grow at the end of each stem in clusters. The flowers are a light…

The anagallis flower is commonly known as pimpernel. The linifolia variety has a large, brilliant blue flower.

Habit and Flowers of Anagallis Linifolia

The anagallis flower is commonly known as pimpernel. The linifolia variety has a large, brilliant blue…

The flowers of ancectochilus friderici-augusti are usually small and unattractive. The leaves are two and half inches long and one and a half inches broad. The leaves are a dark, velvety green with broad orange and green stripes down the center.

Ancectochilus Friderici-Augusti

The flowers of ancectochilus friderici-augusti are usually small and unattractive. The leaves are two…

Anchusa capensis has blue flowers and a hairy stem. The leaves are linear and taper towards the base.

Anchusa Capensis Flower

Anchusa capensis has blue flowers and a hairy stem. The leaves are linear and taper towards the base.

The flowers of anchusa italica are bright blue or purple. The flowers grow in a compound arrangement along the axis of the stem.

Inflorescence of Anchusa Italica

The flowers of anchusa italica are bright blue or purple. The flowers grow in a compound arrangement…

The flowers of anchusa sempervirens are a rich blue and grow in short spikes at the leafy base. The leaves are placed lower on long stalks.

Anchusa Sempervirens Flowers

The flowers of anchusa sempervirens are a rich blue and grow in short spikes at the leafy base. The…

The flowers of androsace laggeri are pink and are supported at the base of the stem. These flowers grow in the Pyrennes mountain range.

Androsace Laggeri

The flowers of androsace laggeri are pink and are supported at the base of the stem. These flowers grow…

The flowers of androsace sarmentosa are a bright rose color with a white eye. The flowers grow in groups of ten to twenty on an erect stalk. These flowers grow in the Himalayan mountain range.

Androsace Sarmentosa Habit and Leaves

The flowers of androsace sarmentosa are a bright rose color with a white eye. The flowers grow in groups…

Anemone is known as Wind Flower. The Alpina Sulphurea variety has beautiful soft yellow flowers that are cup shaped.

Habit and Flower of Anemone Alpina Sulphurea

Anemone is known as Wind Flower. The Alpina Sulphurea variety has beautiful soft yellow flowers that…

The anemone fulgens flower is a dazzling scarlet color with a black central patch of stamens. This flower grows in Greece and southern Europe.

Anemone Fulgens Flower

The anemone fulgens flower is a dazzling scarlet color with a black central patch of stamens. This flower…

Anemone Hepatica is commonly known as Common Hepatica. The flowers of common hepatica are usually blue. This flower grows in England.

Anemone Hepatica Flower

Anemone Hepatica is commonly known as Common Hepatica. The flowers of common hepatica are usually blue.…

The color of the anemone japonica flower is a rosy, purplish-red. The stamen of the flower is a golden yellow color. This flower grows in Japan.

Flower and Leaf of Anemone Japonica

The color of the anemone japonica flower is a rosy, purplish-red. The stamen of the flower is a golden…

The anemone japonica alba flower is pure white. The large flowers grow between August and November.

Anemone Japonica Alba Flower

The anemone japonica alba flower is pure white. The large flowers grow between August and November.

The anemone narcissiflora flower is usually cream colored and is sometimes purplish on the outside. This flower grows in Europe and North America.

Habit and Flower of Anemone Narcissiflora

The anemone narcissiflora flower is usually cream colored and is sometimes purplish on the outside.…

Anemone Pulsatilla is commonly known as Pasque Flower. The flowers are generally violet and have a silky texture.

Anemone Pulsatilla Flower

Anemone Pulsatilla is commonly known as Pasque Flower. The flowers are generally violet and have a silky…

The flowers of anemone stellata come in several colors such as purple, rose red, or a whitish color. The roots of the plant are shaped like tubers. This flower grows in the south of Europe.

Anemone Stellata Flower

The flowers of anemone stellata come in several colors such as purple, rose red, or a whitish color.…

The anemone vernalis flower is whitish on the inside and violet on the outside. This flower blooms in April and grows in Europe.

Anemone Vernalis Flower

The anemone vernalis flower is whitish on the inside and violet on the outside. This flower blooms in…

The flowers of Archangelica officinalis, or the Garden Angelica, a flowering plant in the Apiaceae family.

Garden Angelica

The flowers of Archangelica officinalis, or the Garden Angelica, a flowering plant in the Apiaceae family.

This letter A with angels is designed with the angels playing a trumpet and a sea shell in the background. All around are leaves and flowers.

Letter A with Angels

This letter A with angels is designed with the angels playing a trumpet and a sea shell in the background.…

A large plant with whitish-green fronds reaching up to a foot in height.

Polypodium Angustatum

A large plant with whitish-green fronds reaching up to a foot in height.

The flower of anigozanthus flavisdus is a yellowish green color. There is also a scarlet and green flowered variety of this species. The leaves and stem are both smooth.

Anigozanthus Flavisdus Inflorerescence and Leaf

The flower of anigozanthus flavisdus is a yellowish green color. There is also a scarlet and green flowered…

A decorative divider with wheat in the center, surrounded by dogs, rabbits, and other plants.

Animal Divider

A decorative divider with wheat in the center, surrounded by dogs, rabbits, and other plants.

"Anona furfuracea. 1. an expanded flower; 2. a vertical section of male and female apparatus, which latter occupies the centre; 3. a vertical section of a carpel; 4. ditto of a ripe seed, showing the ruminated albumen and embryo." -Lindley, 1853

Annona

"Anona furfuracea. 1. an expanded flower; 2. a vertical section of male and female apparatus, which…

The flowers of antennaria margaritacea are white and grow in clusters. Each head of flowers is encircled by dry, colored, chaffy scales.

Habit and Inflorescence of Antennaria Margaritacea

The flowers of antennaria margaritacea are white and grow in clusters. Each head of flowers is encircled…

Anthericum Liliastrum is commonly known as St. Bruno's Lily. The flowers are a transparent white with a green spot on the point of each bell-shaped segment.

Anthericum Liliastrum

Anthericum Liliastrum is commonly known as St. Bruno's Lily. The flowers are a transparent white with…

"Anthodiscus trifoliatus. 1. a flower bud; 2. a flower; 3. a perpendicular section of the pistil." -Lindley, 1853

Anthodiscus

"Anthodiscus trifoliatus. 1. a flower bud; 2. a flower; 3. a perpendicular section of the pistil." -Lindley,…

The anthurium andreanum flower grows on a long yellowish spike called a spadix. The outer portion, called a spathe, is red and leathery.

Anthurium Andreanum Flower

The anthurium andreanum flower grows on a long yellowish spike called a spadix. The outer portion, called…

Anthurium Crystallinum has large, heart shaped leaves. The leaves are a rich, velvety green and the principal veins are banded with a pure, crystal white. This flower grows in Colombia.

Anthurium Crystallinum

Anthurium Crystallinum has large, heart shaped leaves. The leaves are a rich, velvety green and the…

The flowers of anthurium scherzerianum rest on bright red stalks. The spadix, or the cluster of flowers on a spike, is bright orange. This variety of anthurium grows in Costa Rica.

Anthurium Scherzerianum Flower

The flowers of anthurium scherzerianum rest on bright red stalks. The spadix, or the cluster of flowers…

The flowers of anthurium scherzerianum are gigantic, about nine inches long and four inches broad. The flower is a brilliant scarlet color.

Anthurium Scherzerianum Maximum Flower

The flowers of anthurium scherzerianum are gigantic, about nine inches long and four inches broad. The…

The leaves of anthurium splendidum are heart shaped. The stem is short and thick. This plant grows in South America.

Anthurium Splendidum Flowers

The leaves of anthurium splendidum are heart shaped. The stem is short and thick. This plant grows in…

The petals of antirrhinum asarina was one and a half inches long. The petals are white, sometimes tinged with red. The tube of the flower has purple spots and yellow hair on the inside.

Habit and Flower of Antirrhinum Asarina

The petals of antirrhinum asarina was one and a half inches long. The petals are white, sometimes tinged…

Apocynum is more commonly known as Dog's Bane. The flowers of the androsaemifolium variety are pale red with dark stripes. The flowers are bell shaped.

Inflorescence of Apocynum Androsaemifolium

Apocynum is more commonly known as Dog's Bane. The flowers of the androsaemifolium variety are pale…

"Aquilaria Agallochum. 1. a flower; 2. the same split open; 3. a section of the ovary." -Lindley, 1853

Aquilaria

"Aquilaria Agallochum. 1. a flower; 2. the same split open; 3. a section of the ovary." -Lindley, 1853

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 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…

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…

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…

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…

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…

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

"1. Aretia Vitaliana; 2. a flower cut open; 3. the pistil; 4. a vertical section of the latter, showing the free central placenta; 5. a section of a seed." -Lindley, 1853

Aretia

"1. Aretia Vitaliana; 2. a flower cut open; 3. the pistil; 4. a vertical section of the latter, showing…

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…

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.

Also known as Sagittaria sagittifolia. It is a flowering plant that is native to the wetlands of Europe and Asia. The leaves are arrow-shaped and the flowers generally have three white petals with numerous purple stamens.

Arrowhead

Also known as Sagittaria sagittifolia. It is a flowering plant that is native to the wetlands of Europe…

Of the arrowhead family (Sagittaria), the delta arrowhead (Sagittaria platyphylla).

Delta Arrowhead

Of the arrowhead family (Sagittaria), the delta arrowhead (Sagittaria platyphylla).

Of the arrowhead family (Sagittaria), the grassy arrowhead (Sagittaria graminea).

Grassy Arrowhead

Of the arrowhead family (Sagittaria), the grassy arrowhead (Sagittaria graminea).

Of the arrowhead family (Sagittaria), Sagittaria heterophylla.

Sagittaria heterophylla

Of the arrowhead family (Sagittaria), Sagittaria heterophylla.

Of the arrowhead family (Sagittaria), the slender arrowhead (Sagittaria teres).

Slender Arrowhead

Of the arrowhead family (Sagittaria), the slender arrowhead (Sagittaria teres).

"1. Spathe of Arum maculatum; 2. its spadix loaded with flowers; 3. an anther; 4. a transverse section of an ovary; 5. a cluster of ripe fruits; 6. a seed; 7. a section of the same, showing the embryo." -Lindley, 1853

Wild Arum

"1. Spathe of Arum maculatum; 2. its spadix loaded with flowers; 3. an anther; 4. a transverse section…