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The florets of a flower. A, ray florets. B, disk florets.

Florets

The florets of a flower. A, ray florets. B, disk florets.

"Umbel is formed when the secondary axes originate from the same point on the stem, and rise to nearly the same height. The whole is called a universal umbel. If the secondary axes develop tertiary ones in the same manner, each is called a partial umbel."—Darby, 1855

Umbels

"Umbel is formed when the secondary axes originate from the same point on the stem, and rise to nearly…

"Cyme is produced when a single flower at the top of the stem has two branches, one on each side, which in turn subdivides in the same way."—Darby, 1855

Cyme

"Cyme is produced when a single flower at the top of the stem has two branches, one on each side, which…

"When the ovary is composed of several carpels, the carpels are arranged with the midrib placed outwardly, and the margins turned inward toward the center, as seen in the transverse section of the Hibiscus, which is composed of five carpels, with their margins meeting in the center, forming a central placenta, to which the seeds are attached."

Section of Hibiscus

"When the ovary is composed of several carpels, the carpels are arranged with the midrib placed outwardly,…

"If in Fig. 132, a, a, a, a, a, represent five stamens, and b, b, as many carpels, it will be observed that the stamens occupy alternate positions in respect to the carpels."—Darby, 1855

Arrangement of Stamens and Carpels

"If in Fig. 132, a, a, a, a, a, represent five stamens, and b, b, as many carpels, it will be observed…

"When the carpels consist of several whorls on the same plane, the individuals of contiguous whorls follow the same law of alternation, as is exhibited in Fig. 133, in which a represents the axis, b b the whorl contiguous to it, and c c the exterior whorl."—Darby, 1855

Two Whorls of Carpels

"When the carpels consist of several whorls on the same plane, the individuals of contiguous whorls…

"The Nut or Glans is a one-celled fruit, with a hardened pericarp, surrounded by bracts."—Darby, 1855

Nut or Glans

"The Nut or Glans is a one-celled fruit, with a hardened pericarp, surrounded by bracts."—Darby,…

The cone of the magnolia. It has a single carpel with one or several seeds.

Cone of the Magnolia

The cone of the magnolia. It has a single carpel with one or several seeds.

A floral capital letter N.

Floral Letter N

A floral capital letter N.

A floral capital letter N with leaves.

Floral Capital N

A floral capital letter N with leaves.

A small, ornate rosette.

Ornate Stamp

A small, ornate rosette.

The heraldic charge borne by the sixth eldest son in a family.

The Fleur-de-lis

The heraldic charge borne by the sixth eldest son in a family.

The heraldic charge borne by the seventh eldest son in a family.

The Rose

The heraldic charge borne by the seventh eldest son in a family.

"A winter annual of the mustard family, which is quite sure to be found producing much seed on roadsides and on other waste areas."—The Federal Digest, 1921

French-Weed

"A winter annual of the mustard family, which is quite sure to be found producing much seed on roadsides…

A decorative capital letter W with a floral pattern surrounding it.

Capital Letter W

A decorative capital letter W with a floral pattern surrounding it.

A perennial thistle with arching green leaves and edible flowers.

Artichoke

A perennial thistle with arching green leaves and edible flowers.

A species of sunflower cultivated for its tuber, which is used as a root vegetable.

Jerusalem Artichoke

A species of sunflower cultivated for its tuber, which is used as a root vegetable.

A plant consisting of very small flowers collected together in a composite flower head.

Dandelion

A plant consisting of very small flowers collected together in a composite flower head.

A woody perennial herb with fragrant needle-like leaves.

Rosemary

A woody perennial herb with fragrant needle-like leaves.

Eight flowers.

Eight Flowers

Eight flowers.

Ten flowers.

Ten Flowers

Ten flowers.

Seven flowers.

Seven Flowers

Seven flowers.

Seven flowers.

Seven Flowers

Seven flowers.

Nine flowers.

Nine Flowers

Nine flowers.

Two pansies.

Two Pansies

Two pansies.

Three violets.

Three Violets

Three violets.

One daisy.

One Daisy

One daisy.

Five roses.

Five Roses

Five roses.

Four roses.

Four Roses

Four roses.

Three roses.

Three Roses

Three roses.

Two roses.

Two Roses

Two roses.

One rose.

One Rose

One rose.

Also known as Yucca schidigera. A flowering plant that is native to the Mojave Desert in the Western United States.

Branch of Spanish Bayonet

Also known as Yucca schidigera. A flowering plant that is native to the Mojave Desert in the Western…

The branch and fruit of a Yucca mohavensis, a species of plant from the agave family.

Branch of Yucca Mohavensis

The branch and fruit of a Yucca mohavensis, a species of plant from the agave family.

Also known as Yucca schottii. A branch from the Hoary Yucca, a species of plant from the agave family.

Branch of Hoary Yucca

Also known as Yucca schottii. A branch from the Hoary Yucca, a species of plant from the agave family.

Also known as Yucca gloriosa. The branch of a Spanish Dagger plant, part of the agave family.

Branch of Spanish Dagger

Also known as Yucca gloriosa. The branch of a Spanish Dagger plant, part of the agave family.

Also known as Juglans nigra. A species of flowering tree in the hickory tree, native to eastern North America.

Branch of Eastern Black Walnut Tree

Also known as Juglans nigra. A species of flowering tree in the hickory tree, native to eastern North…

Also known as Hicoria minima. The branch of a Swamp Hickory tree, which produces pear-shaped nuts.

Branch of Swamp Hickory

Also known as Hicoria minima. The branch of a Swamp Hickory tree, which produces pear-shaped nuts.

Also known as Magnolia grandiflora. The branch and flower of a Southern Magnolia plant, native to the southern United States.

Flower of Southern Magnolia

Also known as Magnolia grandiflora. The branch and flower of a Southern Magnolia plant, native to the…

Abronia Umbellata are mostly native to California and are recognized by their showy blossoms in dense clusters that are similar to verbena.

Flowers of the Abronia Umbellata Plant

Abronia Umbellata are mostly native to California and are recognized by their showy blossoms in dense…

Abronia Umbellata grow well in light, sandy soil in a fully exposed position. The limbs of the flower like to spread out. Abronia can be sowed in the autumn and planted in the spring.

Habitat of the Abronia Umbellata Plant

Abronia Umbellata grow well in light, sandy soil in a fully exposed position. The limbs of the flower…

The abutilon insigne is a large flower that has a purplish crimson color with dark leaves. The stem is a deep green with short brown hairs. The petals are short and the flowers hang down loosely.

Abutilon Insigne Flower

The abutilon insigne is a large flower that has a purplish crimson color with dark leaves. The stem…

Acera Anthropophora, more commonly known as the Green Man Orchis, is a genus of terrestrial orchid. The flower is a greenish color with the lip and petals of the flower margined with red.

The Green Man Orchis

Acera Anthropophora, more commonly known as the Green Man Orchis, is a genus of terrestrial orchid.…

The achillea tomentosa is a bright yellow flower. The flowers grow in compound convex formations. The leaves are split along the stem.

Achillea Tomentosa Flowers

The achillea tomentosa is a bright yellow flower. The flowers grow in compound convex formations. The…

In order to grow achimenes they have to be started and grown in stove heat until they flower. Roots should be started in February until the end of April. When the shoots are about two inches high then the root can be transplanted to the pots where they will be grown.

Root of the Achimene

In order to grow achimenes they have to be started and grown in stove heat until they flower. Roots…

The achimenes longiflora is a violet colored flower. Each stalk has one flower. This variety can be found in Guatemala.

Achimenes Longiflora Flower

The achimenes longiflora is a violet colored flower. Each stalk has one flower. This variety can be…

Monk's hood, or aconitum napellus, is a blue flower. Monk's hood is a poisonus plant to both humans and cattle. This flower is often mistaken for horseradish.

Monk's Hood

Monk's hood, or aconitum napellus, is a blue flower. Monk's hood is a poisonus plant to both humans…

Each aconite flower has five petals. The leaves are shaped like palms. The roots of the plant should not be left around because they are poisonous and could be eaten by a person or animal.

Parts of Aconitum Napellus

Each aconite flower has five petals. The leaves are shaped like palms. The roots of the plant should…

Aconitum variegatum flowers are large and blue. The flowers grown in clusters. Each individual flower has a helmet shape.

Aconitum Variegatum Habit and Flower

Aconitum variegatum flowers are large and blue. The flowers grown in clusters. Each individual flower…

Acroclinium roseum has many smooth leaves. The flowers are rose colored and stand on slender, erect stems.

Acroclinium Roseum Habit and Flower

Acroclinium roseum has many smooth leaves. The flowers are rose colored and stand on slender, erect…

The acataea spicata has white, bluish flowers with black berries. The berries are poisonous. The common name for acataea spicata is baneberry.

Actaea Spicata Habit and Flower

The acataea spicata has white, bluish flowers with black berries. The berries are poisonous. The common…

The ada aurantiaca is an orchid that is an orange-scarlet color. Each flower is streaked with black on the inside. There are six to ten blossoms on each long, hanging stem.

Ada Aurantiaca Orchid

The ada aurantiaca is an orchid that is an orange-scarlet color. Each flower is streaked with black…

The common name of adonis aestivalis is Pheasant's Eye. The flowers are deep crimson with flat, oblong petals. The stem of the flower is simple and elongated.

Flower of Adonis Aestivalis

The common name of adonis aestivalis is Pheasant's Eye. The flowers are deep crimson with flat, oblong…

Each adonis aestivalis flower has five to fifteen petals. This variety can reach one foot in height. This is an annual variety of pheasant's eye.

Habit and Flower of Adonis Aestivalis

Each adonis aestivalis flower has five to fifteen petals. This variety can reach one foot in height.…

The aechmea fulgens flower is deep red with a bluish tip. The stalk is red and leafless. The leaves are somewhat sword-shaped and abruptly end.

Aechmea Fulgens Flower

The aechmea fulgens flower is deep red with a bluish tip. The stalk is red and leafless. The leaves…

A type of orchid, the aerides crispum flower is white spread with a purplish rose color. The flower is almost two inches in diameter with slightly egg shaped leaves and petals.

The Flower of Aerides Crispum

A type of orchid, the aerides crispum flower is white spread with a purplish rose color. The flower…

The agapanthus flower is commonly known as the African Lily. The umbellatus variety is bright blue and found in South Africa.

Agapanthus Umbellatus Flower

The agapanthus flower is commonly known as the African Lily. The umbellatus variety is bright blue and…

The agathaea coelestis flower is blue with one head per stem. The leaves are opposite each other along the stem and are egg shaped.

Agathaea Coelestis Flower

The agathaea coelestis flower is blue with one head per stem. The leaves are opposite each other along…

Agave americana has yellowish green flowers that are between two and three inches long. The leaves can be as long as six feet and are concave shaped. The leaves have dark brown prickles.

Agave Americana Flower

Agave americana has yellowish green flowers that are between two and three inches long. The leaves can…

The flowers of agave celsiana are purplish brown and two inches long. The leafless stalk is four feet tall with a rosette formation of leaves at the bottom.

Agave Celsiana Flower

The flowers of agave celsiana are purplish brown and two inches long. The leafless stalk is four feet…