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Helleborus caucasicus punctatus is a garden hybrid of hellebore. The flowers are pale green with rosy dotted sepals.

Habit and Detached Single Flower of Hellebore (Helleborus Caucausicus Punctatus)

Helleborus caucasicus punctatus is a garden hybrid of hellebore. The flowers are pale green with rosy…

Helleborus foetidus is commonly known as bear's foot. The flowers are green with brown edged sepals. The flowers are about one inch across. The entire plant is poisonus.

Fruit of Bear's Foot (Helleborus Foetidus)

Helleborus foetidus is commonly known as bear's foot. The flowers are green with brown edged sepals.…

Christmas rose is the common name of helleborus niger. The flowers are pure white. The flowers are about two to three inches across. The plant grows between six and eighteen inches tall.

Christmas Rose

Christmas rose is the common name of helleborus niger. The flowers are pure white. The flowers are about…

Helleborus niger altifolius is usually known as major, sometimes as maximus. The flowers are very large, about four inches across.

Helleborus Niger Altifolius

Helleborus niger altifolius is usually known as major, sometimes as maximus. The flowers are very large,…

Helleborus Olympicus flowers are a purplish color. The flowers bloom in spring. Each stem has two or three flowers. The plant grows two feet tall.

Habit and Fully and Partially Expanded Flowers of Helleborus Olympicus

Helleborus Olympicus flowers are a purplish color. The flowers bloom in spring. Each stem has two or…

Day lily is the common name of hemerocallis. The fulva variety has large flowers, about four inches wide. There are only a few flowers in each cluster. The flowers bloom in the summer.

Day Lily (Hemerocallis Fulva)

Day lily is the common name of hemerocallis. The fulva variety has large flowers, about four inches…

The common name of hemerocallis is day lily. The middendorfii variety has deep, golden yellow flowers. There are three to four flowers on each head at the end of the stem.

Habit and Detached Head of Flowers of Hemerocallis Middendorfii

The common name of hemerocallis is day lily. The middendorfii variety has deep, golden yellow flowers.…

The common names of heracleum are cow parsley and cow parsnip. The sibiricum variety has yellowish flowers. The flowers bloom in the summer. The plant grows between five and six feet tall.

Heracleum Sibiricum

The common names of heracleum are cow parsley and cow parsnip. The sibiricum variety has yellowish flowers.…

The common names of heracleum are cow parsley and cow parsnip. The sibiricum variety has yellowish flowers. The umbels are large.

Umbel of Heracleum Sibiricum

The common names of heracleum are cow parsley and cow parsnip. The sibiricum variety has yellowish flowers.…

The common name of heuchera is alum root. The glabra variety has small white flowers. The flowers bloom in summer. The plant grows to be one foot tall.

Heuchera Glabra

The common name of heuchera is alum root. The glabra variety has small white flowers. The flowers bloom…

Hibbertia perfoliata flowers are pale yellow. The flowers bloom in summer. The leaves are edged with minute, distant teeth.

Flowering Branch of Hibbertia Perfoliata

Hibbertia perfoliata flowers are pale yellow. The flowers bloom in summer. The leaves are edged with…

Hibiscus coccineus flowers are bright scarlet. The flowers bloom in July and August. The shrubs grow between four and eight feet tall. These shrubs are native to the marshy areas of Florida and Georgia.

Flowering Branch of Hibiscus Coccineus

Hibiscus coccineus flowers are bright scarlet. The flowers bloom in July and August. The shrubs grow…

Hibiscus rosa-sinensis flowers vary in color. The flowers are large and are single, semi, or wholly double. The flowers bloom in the summer. The shrub grows between ten and fifteen feet tall.

Flowering Branch of Hibiscus Rosa-Sinensis

Hibiscus rosa-sinensis flowers vary in color. The flowers are large and are single, semi, or wholly…

The flowers of hibiscus roseus are rose colored. The flowers are large and grow alone on the stems. The shrub grows to be three feet tall.

Flowering Branch of Hibiscus Roseus

The flowers of hibiscus roseus are rose colored. The flowers are large and grow alone on the stems.…

The flowers of hibiscus syriacus vary in color. The flowers are large and grow single or double on the stem. The flowers bloom in August. The shrub grows six feet tall.

Flowering Branch of Hibiscus Syriacus

The flowers of hibiscus syriacus vary in color. The flowers are large and grow single or double on the…

The common name of hibiscus trionum is bladder ketmia. The flowers are yellow with a purple center. The flowers bloom in summer. The shrub grows two feet tall.

Flowering Branch of Hibiscus Trionum

The common name of hibiscus trionum is bladder ketmia. The flowers are yellow with a purple center.…

Hippeastrums are native to tropical South America. The flowers range in color from red to white. Some flowers are also blended with a variety of colors.

Hybrid Hippeastrums

Hippeastrums are native to tropical South America. The flowers range in color from red to white. Some…

The flowers of holboellia latifolia are purple or greenish. The flowers are very fragrant. The flowers bloom in March. The shrub grows up to twenty feet tall.

Flowering Branch and Detached Female Flowers of Holboellia Latifolia

The flowers of holboellia latifolia are purple or greenish. The flowers are very fragrant. The flowers…

Hollyhock is an autumnal flower. Hollyhocks reach a height of eight or ten feet. The flowers grow three feet above the ground.

Flowering Stem of Hollyhock

Hollyhock is an autumnal flower. Hollyhocks reach a height of eight or ten feet. The flowers grow three…

The common name of houstonia caerulea is bluets. The flowers are usually a light blue color but they are sometimes white. Each stem has one flower. The flowers bloom in the summer.

Houstonia Caerulea

The common name of houstonia caerulea is bluets. The flowers are usually a light blue color but they…

The common name of hoya carnosa is wax flower. The flowers are a pinkish white color. The flowers bloom in the summer.

Flowering Stem of Hoya Carnosa

The common name of hoya carnosa is wax flower. The flowers are a pinkish white color. The flowers bloom…

The common name of hoya carnosa is wax flower. This form has variegated leaves.

Hoya Carnosa Variegata

The common name of hoya carnosa is wax flower. This form has variegated leaves.

The flower heads of humea elegans are brownish red, pink, or crimson. The flowers bloom July to October. The shrub grows between five and six feet tall.

Humea Elegans

The flower heads of humea elegans are brownish red, pink, or crimson. The flowers bloom July to October.…

The common name of humulus lupulus is hop or common hop. The flowers are greenish yellow. The flowers bloom in the summer. The heads of the fruit are used in brewing.

Portion of Female Inforlescence of Humulus Lupulus

The common name of humulus lupulus is hop or common hop. The flowers are greenish yellow. The flowers…

Common hyacinth is the common name of hyacinthus orientalis. The flowers are fragrant and clustered. The flowers bloom in spring.

Common Hyacinth

Common hyacinth is the common name of hyacinthus orientalis. The flowers are fragrant and clustered.…

The flowers of the double flowered garden hyacinth are small and rosette like. This variety is not cultivated as often as the single flowered variety.

Double Flowered Variety of the Garden Hyacinth

The flowers of the double flowered garden hyacinth are small and rosette like. This variety is not cultivated…

Hydrangea hortensis is the common hydrangea. The flowers vary in color according to the soil in which the plant is grown. The flowers bloom April to September. The plant grows between two and three feet tall.

Hydrangea Hortensis

Hydrangea hortensis is the common hydrangea. The flowers vary in color according to the soil in which…

Hydrangea paniculata grandiflora has white flowers. The flowers are small and star shaped. The flowers bloom in summer and autumn.

Habit and Detached Single Flower of Hydrangea Paniculata Grandiflora

Hydrangea paniculata grandiflora has white flowers. The flowers are small and star shaped. The flowers…

The flowers of hydrolea spinosa are pale blue. The flowers bloom in July. The stem is thorny.

Flowering Stem of Hydrolea Spinosa

The flowers of hydrolea spinosa are pale blue. The flowers bloom in July. The stem is thorny.

Hymenocallis andreana has white flowers. The flowers grow on slender, one flowered scapes. The leaves are pale green. The plant grows one and a half feet tall.

Hymenocallis Andreana

Hymenocallis andreana has white flowers. The flowers grow on slender, one flowered scapes. The leaves…

The common names of hypericum androsaemum are sweet amber and common tutsan. The flowers are large and grow at the ends of the stems. The flowers bloom in summer. The shrub grows to be three feet tall.

Habit and Detached Flower of Hypericum Androsaemum

The common names of hypericum androsaemum are sweet amber and common tutsan. The flowers are large and…

The common names of hypericum perforatum are common hypericum and St. John's wort. The flowers are bright yellow and grow in clusters at the end of the stems. The petals are marked with black dots. The shrub grows between one and three feet tall.

Dehiscing Capsule and Portion and Inflorescence of Hypericum Perforatum

The common names of hypericum perforatum are common hypericum and St. John's wort. The flowers are bright…

Hypoxis erecta flowers are yellow and star shaped. Each scape has four flowers. The leaves are linear and taper to a point.

Scape and Leaf of Hypoxis Erecta

Hypoxis erecta flowers are yellow and star shaped. Each scape has four flowers. The leaves are linear…

The common name of iberis coronaria is rocket candytuft. The flower are pure white. The flowers grow in numerous long, dense heads or spikes at the tops of the stems.

Flowering Branch and Detached Flower of Iberis Coronaria

The common name of iberis coronaria is rocket candytuft. The flower are pure white. The flowers grow…

The common name of iberis sempervirens is evergreen candytuft. The flowers are pure white and bloom in the summer. The plant grows between nine and twelve inches tall.

Flowering Branch of Iberis Sempervirens

The common name of iberis sempervirens is evergreen candytuft. The flowers are pure white and bloom…

The common name of iberis umbellata is the common candytuft. The flowers are usually purple. The flowers bloom in spring and summer. The plant grows between six and twelve inches tall.

Habit and Detached Inflorescence of Iberis Umbellata

The common name of iberis umbellata is the common candytuft. The flowers are usually purple. The flowers…

Ilex cornuta is a variety of holly. The berries of this variety are large. The leaves are hard and dark green. The leaves usually have three strong spines at the end.

Habit, Flowering Branch, and Flower of Ilex Cornuta

Ilex cornuta is a variety of holly. The berries of this variety are large. The leaves are hard and dark…

The flowers are shining white and grow in whorls. The flowers bloom in summer. The plant grows between one and three inches tall.

Flowering Shoot of Illecebrum Verticillatum

The flowers are shining white and grow in whorls. The flowers bloom in summer. The plant grows between…

The flowers are a clear, rich salmon or light flame color. The flowers are large with a light center. The leaves are dark green. It is supposedly a hybrid.

Habit and Detached Flower of Imantophyllum Cyrtanthiflorum

The flowers are a clear, rich salmon or light flame color. The flowers are large with a light center.…

The flowers are a fine, deep orange. The anthers and style of the flowers are bright yellow. The umbel has ten to twenty flowers.

Imantophyllum Miniatum

The flowers are a fine, deep orange. The anthers and style of the flowers are bright yellow. The umbel…

The common name of impatiens balsamina is the common balsam. The flowers are red. The flowers bloom in the summer. The plant grows between one and two feet tall.

Flowering Shoot of Impatiens Balsamina Flore-Pleno

The common name of impatiens balsamina is the common balsam. The flowers are red. The flowers bloom…

This variety of balsam has purple flowers that bloom in August. The plant grows to be ten feet tall. The plant is a hardy annual.

Top of Flowering Branch, Detached Flower, and Young Seed Vessel of Impatiens Roylei

This variety of balsam has purple flowers that bloom in August. The plant grows to be ten feet tall.…

The flowers are a bright rose color and grow on short stalks. The flowers bloom in summer. The plant grows between three and four and a half feet tall.

Flowering Shoot and Detached Single Flower of Incarvillea Olgae

The flowers are a bright rose color and grow on short stalks. The flowers bloom in summer. The plant…

The flower heads are yellow. The flowers bloom in July and August. Each stem is hairy with one flower head.

Inula Glandulosa

The flower heads are yellow. The flowers bloom in July and August. Each stem is hairy with one flower…

The common name of inula helenium is Elecampane. The flower heads are bright yellow. The flower heads grow alone at the ends of the stems. The plant grows between three and four feet tall.

Inula Helenium

The common name of inula helenium is Elecampane. The flower heads are bright yellow. The flower heads…

The flowers are dark purple. The flowers bloom June to September. The plant grows ten feet tall.

Habit and Detached Flower Shoot of Ipomoea Purpurea

The flowers are dark purple. The flowers bloom June to September. The plant grows ten feet tall.

The flowers are dark red. There is one flower per slim stem. The flowers bloom July to September. The plant grows to be six feet tall.

Habit and Detached Flowering Branchlet of Ipomoea Quamoclit

The flowers are dark red. There is one flower per slim stem. The flowers bloom July to September. The…

The flowers are white in the bud, with the limb of a rich lake red. When the flower becomes expanded it becomes a fine, purplish blue color. Each slim stem has three to four flowers.

Habit and Detached Flowering Shoot of Ipomoea Rubro-Caerulea

The flowers are white in the bud, with the limb of a rich lake red. When the flower becomes expanded…

The capsule of iris bursts when ripe. When the capsule bursts it discharges its' contents.

Dehiscing Capsule of Iris

The capsule of iris bursts when ripe. When the capsule bursts it discharges its' contents.

Iris germanica is commonly know as either German or common iris. The flowers are purple with a white claw with brownish veins. The flowers are very fragrant. Each clusters has four to five flowers.

Habit and Detached Flower of Iris Germanica

Iris germanica is commonly know as either German or common iris. The flowers are purple with a white…

Iris guldenstadtiana flowers bloom in June. Each spathe has two or three flowers. The plant grows two feet tall.

Iris Guldenstadtiana

Iris guldenstadtiana flowers bloom in June. Each spathe has two or three flowers. The plant grows two…

Iris iberica flowers grow alone on each stem. The flowers are white or pale lilac.

Flower of Iris Iberica

Iris iberica flowers grow alone on each stem. The flowers are white or pale lilac.

The common name of iris laevigata is Japanese Iris. The flowers are bright purple and grow alone on each stem. The leaves are pale green, thin, and weak.

Iris Laevigata Flore-Pleno

The common name of iris laevigata is Japanese Iris. The flowers are bright purple and grow alone on…

Iris pallida is a fragrant flower with a smell similar to orange blossoms. The lower half of the flower is veined with bright lilac on a white ground.

Flower Scape of Iris Pallida

Iris pallida is a fragrant flower with a smell similar to orange blossoms. The lower half of the flower…

Iris pumila is a small, dwarf variety. The flowers are a bright, lilac purple color.

Iris Pumila

Iris pumila is a small, dwarf variety. The flowers are a bright, lilac purple color.

Iris susiana flowers grow alone of each stem. The flowers are a whitish lilac with dense, fine brown black spots.

Iris Susiana

Iris susiana flowers grow alone of each stem. The flowers are a whitish lilac with dense, fine brown…

Iris versicolor flowers are redish purple. The flowers grow in clusters. This variety is common in North America.

Habit and Detached Portion of Inflorescence of Iris Versicolor

Iris versicolor flowers are redish purple. The flowers grow in clusters. This variety is common in North…

Each spathe of iris caucasica has one flower. The flowers are a pale yellow and have no scent. Each stem has one to three flowers.

Iris Caucasica

Each spathe of iris caucasica has one flower. The flowers are a pale yellow and have no scent. Each…

Iris histrio flowers are a lilac purple color. Each spathe has one flower.

Flowers and Leaves of Iris Histrio

Iris histrio flowers are a lilac purple color. Each spathe has one flower.

Iris persica flowers are violet scented. The flowers bloom in February and March. The flowers are a pale, yellowish lilac with a bright yellow, beardless keel.

Iris Persica

Iris persica flowers are violet scented. The flowers bloom in February and March. The flowers are a…