A Flower With Male and Female Parts

Short answer

• A flower with male and female parts is called a perfect flower, also called a bisexual flower. It contains both stamens, the male parts, and a pistil, the female part, in a single bloom.
• The male part is the stamen. Each stamen has a stalk called a filament and a pollen producing tip called an anther. The anther releases pollen grains, which carry the male reproductive cells.
• The female part is the pistil, also called a carpel. A pistil has three parts: the stigma, the style, and the ovary. The stigma is the pollen receiving surface at the top, the style is the stalk below it, and the ovary at the base holds the ovules, which can develop into seeds.
• Pollination happens when pollen moves from an anther to a stigma. After pollen lands on a receptive stigma, a pollen tube grows down through the style to an ovule in the ovary, and fertilization follows.
• A flower that has only male parts or only female parts is called an imperfect flower. Imperfect flowers can grow on the same plant, which makes the plant monoecious, or on separate plants, which makes the species dioecious.
• Common perfect flowers include lilies, hibiscus, and soybeans. Common plants with imperfect flowers include corn, cucumber, squash, and holly.

The One Word Answer: A Perfect Flower

When someone asks about a flower with male and female parts, the shortest correct answer is that it is a perfect flower. Botanists also call it a bisexual flower, because it carries both sexes in one bloom. The University of Georgia Cooperative Extension puts it plainly: a flower with both stamens and pistil is called a perfect flower, while a flower with only male or only female parts is imperfect. Encyclopaedia Britannica gives the same definition, describing a perfect flower as one with both stamens and pistils.

The word perfect here does not mean flawless or better than other flowers. It is a technical term with a narrow meaning. A perfect flower is simply one that contains both sets of reproductive organs. An imperfect flower is not broken or defective. It is a normal flower that carries only one set of reproductive organs, and it belongs to a plant that handles reproduction in a different way, as explained later in this article.

This distinction matters because it clears up the most common confusion around this question. People sometimes assume that every flower has both male and female parts, or that a flower with only one set of parts is unusual. Neither assumption is right. Both arrangements are common in the plant world, and each has its own way of getting pollen from a male part to a female part so that seeds can form.

A flower is the reproductive structure of a flowering plant, known as an angiosperm. Its job is the reproduction of the species through the production of seed. Britannica notes that there are over 352,000 species of flowering plants known to science, and their flowers range in size from minute blossoms to the giant blooms of Rafflesia and the titan arum. Despite that variety, the basic plan is the same. Each flower sits on a floral axis, with the reproductive organs in the center and the accessory organs, the sepals and petals, around them.

The four whorls, or rings, of a typical flower are the calyx, made of sepals; the corolla, made of petals; the androecium, the group of stamens; and the gynoecium, the pistil or pistils, in the center. The sepals and petals together make up the perianth, or floral envelope. The sepals are usually green and protect the bud, while the petals are usually colorful and attract pollinators. The two inner whorls, the stamens and the pistil, do the reproductive work, and they are the subject of this article.

The Male Parts: The Stamen

The male parts of a flower are collectively called the androecium, and each individual male unit is a stamen. Most flowers have several stamens arranged in a ring around the central pistil. In a lily, for example, six stamens surround one central pistil, and each stamen is easy to see because the anther at its tip is loaded with orange pollen.

Each stamen has two parts. The filament is a slender stalk that holds the anther up and out, where pollen can be picked up by a visiting insect or caught by the wind. The anther is the pollen producing tip at the end of the filament. Inside the anther are pollen sacs in which pollen grains develop. When the pollen sacs are ripe, the anther releases the pollen, and pollination becomes possible.

Pollen grains are the carriers of the male reproductive cells. The University of Georgia Extension describes pollen grains as the equivalent of animal male sperm, which is a fair comparison for the role they play, even though the structures are different. A pollen grain on its own does nothing. It must reach the stigma of a flower of the same species, land on a receptive surface, and germinate. Only then can it grow a pollen tube and deliver its male cells to an ovule.

The number of stamens varies widely from species to species. Some flowers have only one or two stamens. Others have dozens, or even hundreds, packed into a single bloom. The number is a feature of the species, not a measure of how male the flower is. One stamen is enough to make a flower male in the botanical sense, just as one pistil is enough to make it female.

It is worth noting that the word stamen is singular and stamens is plural. The group of all the stamens in a flower is the androecium, a term that comes from Greek words meaning male and house. You will see androecium in textbooks and plant keys, but stamen is the word most readers need, and it is the word this article uses throughout.

The Female Parts: The Pistil and the Carpel

The female parts of a flower are collectively called the gynoecium, and each individual female unit is a pistil. A pistil may be made up of a single carpel, which is a modified leaf that bears ovules, or it may be compound, formed from several carpels joined together. In everyday language, pistil and carpel are often used as if they mean the same thing, and for a simple flower with one carpel they do describe the same structure. Where several carpels have fused into one pistil, carpel is the name for each original unit and pistil is the name for the whole fused structure. The distinction rarely matters for a general reader, but it explains why sources sometimes use one word and sometimes the other.

A pistil has three parts, and each one has a distinct job. The ovary is the swollen base of the pistil. It encloses the ovules, which are the potential seeds, each containing an egg cell. The style is the upright stalk that rises from the ovary. The stigma sits on top of the style, and it is the surface that receives pollen. Britannica describes the arrangement in the same order: a pistil consists of an ovary, with an upright extension, the style, on the top of which rests the stigma, the pollen receptive surface.

The ovary is the part that changes most dramatically after fertilization. Once an ovule inside it has been fertilized, the ovule develops into a seed and the ovary itself enlarges to form the fruit. That is why the small green swelling at the base of a cucumber flower or a squash flower is a reliable sign that you are looking at a female flower. The swelling is the ovary, and if pollination succeeds, it will grow into the fruit you eat. The University of Georgia Extension makes exactly this point: it is easy to identify imperfect female flowers in cucurbit crops such as cantaloupe, cucumber, squash, and watermelon because of the large ovary at the base of the flower, which later develops into a mature fruit.

The style is a passage, not a destination. Its job is to give the pollen tube a route from the stigma down to the ovary. Styles vary in length and shape. In some flowers the style is short and the stigma sits almost on top of the ovary. In others, such as corn, the style is very long. The silks of an ear of corn are styles, each one leading to a single ovule that can become a single kernel if pollen reaches it.

The number of pistils also varies. Many flowers have a single pistil in the center. Some have several separate pistils. The number of pistils, like the number of stamens, is a feature of the species, and it does not change whether the flower counts as perfect. A flower is perfect if it has at least one stamen and at least one pistil, whatever the counts are.

The Stigma in Full: The Flower Part That Receives Pollen

The stigma is the part of the flower that most readers ask about next, and it deserves a full section of its own. The question “what is the stigma of a flower” is really a question about the first step of pollination, because the stigma is where pollination happens.

The stigma is the topmost part of the pistil. It sits at the end of the style, farthest from the ovary, and its surface is the landing place for pollen. Britannica calls it the pollen receptive surface, and the University of Georgia Extension describes it as a sticky stigma on top of the style. That stickiness is functional, not decorative. Pollen grains are light and easily blown away, so the stigma needs to catch them and hold them in place long enough for germination to begin. Many stigmas are coated with a sticky fluid, and many are branched or feathery, which increases the surface area available to catch pollen from the air or from a visiting insect.

A stigma is receptive only at the right time. When a flower first opens, its stigma may not yet be ready to receive pollen, and later it may dry out and stop being receptive. This timing is one of the ways plants control their own reproduction. In some species the stigma becomes receptive before the anthers of the same flower release pollen, and in others the anthers release pollen first. These timing differences reduce self pollination and encourage cross pollination, which brings pollen from a different plant of the same species and increases genetic variety in the seeds.

Once a pollen grain lands on a receptive stigma, it germinates. A pollen tube grows out of the grain, extends down through the style, and reaches an ovule inside the ovary. Two male cells travel through this tube. One fertilizes the egg cell, which becomes the embryo of the seed. The other joins with two polar nuclei to form the endosperm, the nutrient rich tissue that feeds the embryo as it grows. This double fertilization is characteristic of flowering plants, and Britannica describes it as the process by which a fertilized ovule develops into a seed while the ovary develops into a fruit.

The shape of a stigma often gives a clue about how the flower is pollinated. Wind pollinated flowers tend to have large, branched, feathery stigmas that can catch pollen drifting on the air. Animal pollinated flowers tend to have smaller, stickier stigmas placed where a visiting insect or bird will brush against them. The stigma of a hibiscus is a good example to look at in a garden. It sits at the end of a long central column, with the anthers arranged around it, so an insect reaching for nectar is likely to touch both.

A common mistake is to confuse the stigma with the style, or to treat the whole pistil as if it were only the stigma. The stigma is one part of the pistil, the part that receives pollen. The style is the stalk beneath it, and the ovary is the base that holds the ovules. All three are needed. A stigma without a style and ovary could catch pollen but could not deliver it to an ovule, and an ovary without a stigma could never receive pollen in the first place.

How the Parts Work Together: From Pollination to Seed

Pollination is the transfer of pollen from an anther to a stigma. That is the whole definition, and it is a short step in a longer process. Pollination moves the pollen. Fertilization happens later, inside the ovary, after the pollen tube has grown. A flower can be pollinated without being fertilized, for example if the pollen comes from a different species, or if the stigma is no longer receptive. Seed production needs both steps to succeed.

There are two chief kinds of pollination. Self pollination is the pollination of a stigma by pollen from the same flower or from another flower on the same plant. Cross pollination is the transfer of pollen from the anther of a flower on one plant to the stigma of a flower on another plant of the same species. A perfect flower can do either, because it carries both the pollen source and the pollen receiver in the same bloom. Having both parts does not mean a flower always pollinates itself. Britannica notes that self pollination occurs in many species, but in others it is prevented by adaptations such as the structure of the flower, self incompatibility, and the maturation of stamens and pistils at different times. Many perfect flowers rely on insects or wind to bring pollen from another plant, even though they could in theory pollinate themselves.

Pollinators matter here, and they connect this article to the wider life of a garden. Bees are among the most important pollinators for flowering plants, and the flowers that attract them are the ones that offer nectar and pollen in return for a visit. Our guide to what flowers attract bees explains which blooms bees visit most and why, and our guide to flowers for native bees covers the plants that support local bee species in particular. A garden planted with those flowers gives perfect flowers more chances to be cross pollinated, which usually means more seed and more fruit.

After pollination, the pollen tube grows, fertilization takes place, the ovule becomes a seed, and the ovary becomes a fruit. The fruit is not always the fleshy, edible kind. In botanical terms, a fruit is the mature ovary of a flower, whatever it looks like. A pea pod is a fruit. A grain of wheat is a fruit. An acorn is a fruit. The fleshy fruits we eat are only one version of a structure that every flowering plant produces in some form.

Perfect Flowers and Imperfect Flowers

The perfect and imperfect distinction is about a single flower, not about a whole plant. A perfect flower has both stamens and pistils. An imperfect flower lacks one or the other. An imperfect flower with only stamens is called a staminate flower, or a male flower. An imperfect flower with only a pistil is called a pistillate flower, or a female flower. Only female flowers and perfect flowers can set fruit, because only they have an ovary with ovules. A male flower can produce pollen, but it can never become a fruit.

Familiar perfect flowers include lilies, hibiscus, and soybeans, though soybean flowers are very small and easy to overlook. Familiar plants with imperfect flowers include corn, cucumber, squash, pumpkin, watermelon, holly, and willow. In corn, the tassel at the top of the plant is a cluster of male flowers, and the silks lower down are the styles of female flowers. In a cucumber plant, some flowers have a small swelling at the base and some do not. The ones with the swelling are female, and the ones without it are male.

The distinction also explains a common gardening observation. In cucurbits such as cucumber and squash, male flowers often appear before any female flowers, and new gardeners sometimes worry that the plant will never set fruit. It usually will. Male flowers usually appear first, so pollen is already available when the first female flowers open. The appearance of male flowers alone is normal, not a sign of failure.

Complete and Incomplete: A Separate Distinction

Perfect and imperfect is not the only way flowers are classified, and it is easy to confuse it with a second distinction: complete and incomplete. The two systems measure different things, and a flower can be perfect but incomplete, or complete but imperfect is impossible.

A complete flower has all four whorls: sepals, petals, stamens, and pistils. An incomplete flower lacks one or more of these whorls. A perfect flower can be incomplete if it is missing sepals or petals while still having both stamens and pistils. Many wind pollinated flowers are built this way: they have no showy petals because they do not need to attract insects, yet they carry both male and female parts and can produce seed.

Most readers do not need to use the complete and incomplete terms in everyday gardening, but knowing they exist prevents a common misunderstanding. When a source calls a flower incomplete, it is not saying the flower is missing a sex. It is saying the flower is missing one of the four whorls, which is often the petals. Wind pollinated flowers commonly lack showy petals because they do not need to attract insects, and their small, plain flowers are fully functional without them.

Monoecious and Dioecious: What Happens at the Level of the Plant

Perfect and imperfect describe flowers. Monoecious and dioecious describe plants, and they apply only where imperfect flowers are involved. The distinction is about where the male and female flowers grow, not about what is inside a single flower. Keeping the two levels separate is the key to using these terms correctly.

A monoecious plant bears both male and female flowers on the same plant. The word comes from Greek words meaning one house, because both sexes live under one roof. Corn is monoecious: the tassel carries male flowers and the ear carries female flowers on the same plant. Cucumber, squash, oak, hazel, and begonia are also monoecious according to Britannica and the extension sources. A monoecious plant can still need cross pollination, because its male and female flowers are separate blooms, and pollen must travel from one flower to another, even if both flowers grow on the same plant.

A dioecious plant bears male flowers and female flowers on separate plants. The word means two houses. Holly is dioecious, which is why a garden with only one holly plant may never produce berries. Berries grow only on female plants, and a female plant needs a male plant nearby to supply pollen. Date palms, willow, and cottonwood are also dioecious. If you want fruit from a dioecious species, you need at least one plant of each sex, and they need to flower at the same time.

Some species do not fit neatly into either category. Britannica notes that horse chestnut is polygamous, bearing perfect, pistillate, and staminate flowers on the same plant. These mixed cases are a reminder that the categories are tools for describing patterns, not rigid boxes that every species must fit. For the reader’s purposes, the important point is simpler: monoecious means both kinds of imperfect flower on one plant, dioecious means male and female flowers on separate plants, and neither term applies to a perfect flower, because a perfect flower already contains both sexes.

A further point worth stating plainly is that the terms monoecious and dioecious describe the plant, not the flower. A single flower is never monoecious or dioecious. It is perfect or imperfect, and if imperfect it is staminate or pistillate. Sources that call a flower monoecious are using the word loosely, and careful writing keeps the plant level and the flower level apart.

Examples You Can Check in a Garden

The easiest way to fix these terms in memory is to look at real flowers and name the parts. A lily is a good first example. Pull a lily apart gently, or simply look closely at an open bloom. Six stamens surround a single central pistil. The anthers are loaded with visible pollen, and the stigma at the top of the pistil is a small, slightly sticky knob. The lily is a perfect flower, and its parts are large enough to identify without any tools.

A hibiscus flower shows the perfect pattern in a different arrangement. Its style and the filaments of its stamens are fused into a single long tube, with the anthers branching out close to the stigma, so an insect reaching for nectar is likely to touch both the pollen and the stigma in one visit.

A squash flower shows the imperfect pattern. Look at the base of the bloom. A female flower has a small swelling, the ovary, that looks like a miniature squash. A male flower has a straight, thin stem with no swelling. The male flower will wilt and fall after shedding its pollen. The female flower, if pollinated, will keep its swelling and grow it into a fruit. Once you have seen the difference, it is easy to recognize on cucumbers, pumpkins, and melons too.

A holly plant shows the dioecious pattern, but it takes two plants to see it. A female holly in berry has pistillate flowers, and a male holly nearby has staminate flowers. Neither plant alone tells the whole story. This is why garden centers sometimes sell a male holly as a pollinator alongside a female holly, and why a lone female holly may flower every year without ever producing a berry.

Common Confusions, Cleared Up

The first confusion is between male and female parts and male and female plants. A perfect flower has both parts, so the plant that bears it does not need a partner plant of the opposite sex. An imperfect flower has one part, so its plant needs the other kind of flower, either on the same plant or on a different plant. The flower level and the plant level are different questions, and answering one does not answer the other.

The second confusion is the idea that a perfect flower always pollinates itself. It can, but in many species it does not, because the flower is built to prevent it. The stigma may become receptive after the anthers have shed their pollen, or the anthers may be placed where an insect is more likely to carry pollen away than to drop it on the same flower’s stigma. Self pollination is an option that a perfect flower has, not a fate it cannot escape.

The third confusion is the idea that imperfect flowers are rare or abnormal. They are not. Many of the most familiar food plants, including corn, cucumber, squash, and pumpkin, rely on imperfect flowers. The arrangement is a normal and successful way to reproduce, and it has the advantage of making self pollination impossible within a single flower, since the male and female parts are in different blooms.

The fourth confusion is about the word carpel. Some sources use carpel where others use pistil, and readers wonder whether they are different parts. In most cases they are two names for the same female structure, with carpel being the more technical term for each ovule bearing unit and pistil being the name for the whole structure, whether it is made of one carpel or several fused together. When a source says a flower has one carpel, it usually means the flower has one pistil made from one carpel. The difference matters to botanists classifying flowers, and it rarely matters to a reader who wants to know which part is female.

The fifth confusion is about flowers without obvious petals. A flower can lack petals entirely and still be perfect, since petals are accessory organs. They attract pollinators and protect the bud, but they do not take part in reproduction. A flower with no petals and both stamens and pistils is incomplete but perfect, and it can produce seed as well as any showy garden flower.

Why This Matters Beyond the Garden

Knowing which parts are male and which are female is useful in practical ways. A gardener who can tell a male squash flower from a female one knows whether to expect fruit, and knows that a plant covered in male flowers is not failing. A gardener with a holly that never berries knows to check whether a male plant grows nearby.

The knowledge also helps when choosing plants for pollinators. Flowers that offer nectar and pollen attract the insects that carry pollen between blooms, and that movement is what turns flowers into seed and fruit. For more on the flowers that do this work best, see our guide to interesting facts about flowers, which covers how flowers and their pollinators fit together, and the bee guides linked earlier in this article.

For a reader who simply wanted the name, the answer fits in one sentence: a flower with male and female parts is a perfect flower, with stamens for the male side and a pistil, stigma, style, and ovary, for the female side. Everything else in this article is the explanation of that sentence, part by part, so that the name is not just memorized but understood.

FAQ

What is a flower with male and female parts called?

It is called a perfect flower, also called a bisexual flower. It contains both stamens, the male parts, and a pistil, the female part, in a single bloom. Lilies, hibiscus, and soybeans are all perfect flowers.

What are the male parts of a flower?

The male parts are the stamens, which together form the androecium. Each stamen has a filament, a slender stalk, and an anther, the pollen producing tip. The anther releases pollen grains, which carry the male reproductive cells to a stigma.

What are the female parts of a flower?

The female parts form the pistil, also called a carpel, which together make up the gynoecium. A pistil has three parts: the stigma, which receives pollen; the style, the stalk below the stigma; and the ovary, which holds the ovules that can develop into seeds.

What is the stigma of a flower?

The stigma is the pollen receiving surface at the top of the pistil, on the end of the style. It is often sticky or feathery so that it can catch and hold pollen grains. Once pollen lands on a receptive stigma, it germinates and grows a pollen tube down through the style to an ovule in the ovary.

What is the difference between a perfect flower and an imperfect flower?

A perfect flower has both male and female parts in the same bloom. An imperfect flower has only one set of parts: a staminate flower has only stamens, and a pistillate flower has only a pistil. Only female flowers and perfect flowers can set fruit, because only they have an ovary.

What is the difference between monoecious and dioecious plants?

Monoecious plants bear both male and female imperfect flowers on the same plant, as corn and cucumber do. Dioecious plants bear male flowers and female flowers on separate plants, as holly and willow do. The terms describe plants, not single flowers, and they apply only where imperfect flowers are involved.

Can a perfect flower pollinate itself?

Yes, a perfect flower can self pollinate, because it carries both the pollen source and the pollen receiver. Many perfect flowers still rely on cross pollination, because their structure or timing prevents self pollination, or because insects carry pollen from other plants. Self pollination is an option, not a rule.

Do all flowers have male and female parts?

No. Many familiar flowers are perfect, but many plants have imperfect flowers instead. Corn, cucumber, squash, pumpkin, holly, and willow all have separate male and female flowers, and they reproduce successfully that way.

Sources & references

• Encyclopaedia Britannica, "Flower", https://www.britannica.com/science/flower (flower structure, four whorls, stamen and pistil anatomy, perfect and imperfect definitions, monoecious and dioecious examples, pollination and double fertilization; updated 21 September 2026)
• University of Georgia College of Agricultural and Environmental Sciences, Cooperative Extension Bee Program, "The Flower and the Fruit", http://bees.caes.uga.edu/bees-beekeeping-pollination/pollination/pollination-the-flower-and-the-fruit.html (stamen and pistil structure, perfect and imperfect flowers, monoecious and dioecious definitions, identification of female cucurbit flowers)
• University of California Agriculture and Natural Resources, "Sixty Second Science Snippet: January 2019", https://ucanr.edu/blogs/blogcore/postdetail.cfm?postnum=29201 (perfect and imperfect flower terminology, monoecious and dioecious definitions; published 21 January 2019)
• University of Wisconsin-Madison Division of Extension, "Growing Pumpkins and Other Vine Crops in Wisconsin", http://hort.extension.wisc.edu/files/2020/01/A3688.pdf (flower morphology table: perfect, imperfect, staminate, pistillate, monoecious, dioecious definitions; male flowers appearing first in cucurbits; female flower identification by ovary)
• Biology LibreTexts, "5.1: Flowers" (Botany in Hawaii, Leeward Community College), https://bio.libretexts.org/Bookshelves/Botany/Botany_in_Hawaii_(Daniela_Dutra_Elliott_and_Paula_Mejia_Velasquez)/05%3A_Flowers_fruits_and_seeds/5.01%3A_Flowers (pistil and stamen structure, sticky stigma, hibiscus as a perfect flower, monoecious and dioecious definitions; updated 21 October 2026)
• Iowa Agriculture Literacy Foundation, "Perfect and Imperfect Flower Dissections", https://www.iowaagliteracy.org/Article/Perfect-and-Imperfect-Flower-Dissections (lilies and soybeans as perfect flowers, corn tassel and silks, complete versus incomplete flowers; published 3 January 2016)