Lunaria annua is a variety of satin flower, moonwort, or honesty. The flowers are numerous, pink-purple, and fragrant. The flowers bloom in May and June.

Lunaria Annua

Lunaria annua is a variety of satin flower, moonwort, or honesty. The flowers are numerous, pink-purple,…

Lycaste aromatica is native to Mexico. Each stem has one flower. The flowers bloom in winter and spring.

Lycaste Aromatica

Lycaste aromatica is native to Mexico. Each stem has one flower. The flowers bloom in winter and spring.

The flowers of lychnis githago are red-purple and showy. It is native to Europe.

Lychnis Githago Flower

The flowers of lychnis githago are red-purple and showy. It is native to Europe.

Flower of Jove is the common name of lychnis flos-jovis. The flowers are bright red or rose. The flowers grow in dense clusters.

Flower of Jove

Flower of Jove is the common name of lychnis flos-jovis. The flowers are bright red or rose. The flowers…

Ragged robin and cuckoo flower are the common names of lychnis flos-cuculi. The flowers are red or pink and grow in loose clusters. The plant is native to Europe and north Asia.

Ragged Robin

Ragged robin and cuckoo flower are the common names of lychnis flos-cuculi. The flowers are red or pink…

Masdevallia muscosa is native to Ecuador and Colombia. The stem is hairy and bears a yellow flower. The flowers are a half-inch across.

Masdevallia Muscosa

Masdevallia muscosa is native to Ecuador and Colombia. The stem is hairy and bears a yellow flower.…

Illustrated are several forms of mimulus luteus. The common name is monkey flower. The flowers are deep yellow, commonly with dark spots within. The flowers are found from Alaska to Chile.

Mimulus Luteus

Illustrated are several forms of mimulus luteus. The common name is monkey flower. The flowers are deep…

Shell flower and molucca balm are the common names of <i>moluccella laevis</i>. The plant grows two to three feet tall. The flower clusters have six flowers. The plant is native to western Asia.

Shell Flower

Shell flower and molucca balm are the common names of moluccella laevis. The plant grows two to three…

The left image is a staminate flower of Russian mulberry. The right image is a pistilate flower.

Russian Mulberry Flower

The left image is a staminate flower of Russian mulberry. The right image is a pistilate flower.

<i>Narcissus bulbocodium monophyllus</i> is a variety of hoop petticoat daffodil. The flower is white and blooms in the winter.

Narcissus Bolbocodium Monophyllus

Narcissus bulbocodium monophyllus is a variety of hoop petticoat daffodil. The flower is white and blooms…

Narcissus maximus is a form of <i>narcissus pseudo-narcissus</i>. The flower is very large and deep, golden yellow. The segments are twisted at the ends.

Narcissus Maximus

Narcissus maximus is a form of narcissus pseudo-narcissus. The flower is very large and deep, golden…

There is always one <i>narcissus incomparabilis</i> flower per stem. The flowers are not fragrant. The plant is native to southern France and Spain.

Narcissus Incomparabilis

There is always one narcissus incomparabilis flower per stem. The flowers are not fragrant. The plant…

Polyanthus narcissus is the common name of <i>narcissus tazetta</i>. The flower segments are pure white with a lemon-yellow, cup shaped corona. The plant can be found from the Canary Islands to China and Japan.

Polyanthus Narcissus

Polyanthus narcissus is the common name of narcissus tazetta. The flower segments are pure white with…

Pictured are various forms of nectaries. Left, the nectar spurs of <i>linaria vulgaris</i>; the cushion-like nectaries in a grape flower; nectaries of columbine; right, the nectar scales on petals of ranunculus.

Nectaries

Pictured are various forms of nectaries. Left, the nectar spurs of linaria vulgaris; the cushion-like…

Baby blue eyes is the common name of <i>nemophila menziesii insignis</i>. The flower is native to California. The flowers are bright, clear blue.

Baby Blue Eyes

Baby blue eyes is the common name of nemophila menziesii insignis. The flower is native to California.…

The flowers of <i>nicotiana alata grandiflora</i> are very large and very sweet scented. The flower is yellowish.

Nicotiana Alata Grandiflora

The flowers of nicotiana alata grandiflora are very large and very sweet scented. The flower is yellowish.

<i>Nierembergia gracilis</i> is native to Argentina. The flowers are white tinged and veined with purple. The throat is yellow.

Nierembergia Gracilis

Nierembergia gracilis is native to Argentina. The flowers are white tinged and veined with purple. The…

The flowers of <i>nigella damascena</i> are large and white or blue. The flowers bloom in summer. The plant grows one to two feet tall.

Nigella Damascena

The flowers of nigella damascena are large and white or blue. The flowers bloom in summer. The plant…

Pictured are stamens and the vertical section of an ovary from a flower of the anecphya group.

Anecphya Group

Pictured are stamens and the vertical section of an ovary from a flower of the anecphya group.

Pictured are the stamens of a vertical cross section of an ovary from a flower of the <i>brachyceras</i> group.

Brachyceras Group

Pictured are the stamens of a vertical cross section of an ovary from a flower of the brachyceras group.

Pictured are the stamens and a vertical section of the ovary of a flower of the castalia group.

Castalia Group

Pictured are the stamens and a vertical section of the ovary of a flower of the castalia group.

Pictured are the stamens and a vertical section of the ovary of a flower of the lotos group.

Lotos Group

Pictured are the stamens and a vertical section of the ovary of a flower of the lotos group.

Illustrated are transverse sections of ovaries of (a) <i>synocarpous</i> and (b) <i>apocarpous</i>.

Transverse Sections of Ovaries

Illustrated are transverse sections of ovaries of (a) synocarpous and (b) apocarpous.

Pictured are capsules of evening primrose, <i>oenothera biennis</i>. The capsules are an inch long and loosely arranged on the lower part of the flower spikes.

Evening Primrose Capsules

Pictured are capsules of evening primrose, oenothera biennis. The capsules are an inch long and loosely…

Sundrops is the common name of <i>oenothera pratensis</i>. The flowers are bright yellow and grow clustered at the end of the stems. The flower can be found from Maine to Iowa and Arkansas.

Sundrops

Sundrops is the common name of oenothera pratensis. The flowers are bright yellow and grow clustered…

Pictured is an olive branch in flower and fruit. Olives yield oil and are also prepared as a food/condiment.

Olive

Pictured is an olive branch in flower and fruit. Olives yield oil and are also prepared as a food/condiment.

Pictured is an onion in flower. The flowers bloom in early summer.

Onion

Pictured is an onion in flower. The flowers bloom in early summer.

A geranium branch. Geraniums can come in a variety of different colors.

Geranium Branch

A geranium branch. Geraniums can come in a variety of different colors.

The labeled anatomy of a cherry blossom.

Cherry Blossom

The labeled anatomy of a cherry blossom.

A description of how an apple grows from a flower.

Growing Apple

A description of how an apple grows from a flower.

This illustration shows a Figwort, a member of the genus Scrophularia. It has the characteristic features of  a five-lobed calyx, a nearly globose corolla (the upper lip of which is two-lobed and the lower three-lobed), and a capsule opening with two valves, the edges of which are turned in. The illustration also shows 1) a cross section of a flower, and 2) fruit.

Figwort

This illustration shows a Figwort, a member of the genus Scrophularia. It has the characteristic features…

A type of flower.

Lily of the Valley

A type of flower.

A type of flower.

Frog Bit

A type of flower.

A type of flower.

Madonna Lily

A type of flower.

A type of flower.

Anemone

A type of flower.

A type of marigold flower.

Marsh Marigold

A type of marigold flower.

A type of flower.

Larkspur

A type of flower.

A type of flower.

Primrose

A type of flower.

A type of flower.

Buttercup

A type of flower.

A form of a type of flower.

Form of Calyx in Compositae

A form of a type of flower.

A form of a type of flower.

Form of Calyx in Compositae

A form of a type of flower.

A form of a type of flower.

Form of Calyx in Compositae

A form of a type of flower.

A type of flower.

Chenopodium

A type of flower.

The flower of the apple tree.

Apple (flower)

The flower of the apple tree.

A type of flower.

Campanula

A type of flower.

A type of flower.

Convolvulus

A type of flower.

A type of flower.

Pimpernel

A type of flower.

A type of flower.

Wallflower

A type of flower.

A type of flower.

Laburnum

A type of flower.

A type of flower.

Sweet Pea

A type of flower.

A type of flower.

Deadnettle

A type of flower.

A type of flower.

Toad Flax

A type of flower.

A type of flower.

Snapdragon

A type of flower.

This illustration shows a poppy flower with its petals removed.

Poppy, Petals Removed

This illustration shows a poppy flower with its petals removed.

This illustration shows a form of a stamen, the part of a flower that holds pollen for reproduction.

Form of Stamen

This illustration shows a form of a stamen, the part of a flower that holds pollen for reproduction.

This illustration shows a form of a stamen, the part of a flower that holds pollen for reproduction.

Form of Stamen

This illustration shows a form of a stamen, the part of a flower that holds pollen for reproduction.

This illustration shows a form of a stamen, the part of a flower that holds pollen for reproduction.

Form of Stamen

This illustration shows a form of a stamen, the part of a flower that holds pollen for reproduction.

A type of stamen that is positioned underneath the pistil in a flower.

Hypogynous Stamens

A type of stamen that is positioned underneath the pistil in a flower.

Stamens of a flower that surround the rim of a cup or tube that surrounds the ovary, but is not attached to it.

Perigynous Stamens

Stamens of a flower that surround the rim of a cup or tube that surrounds the ovary, but is not attached…

Stamens of a flower situated above a receptacle holding the ovary.

Epigynous Stamens

Stamens of a flower situated above a receptacle holding the ovary.