Flower Anatomy: The Parts of a Flower
Sep 21, · Bracts, like sepals, are leaf-like growths. They may look like sepals, petals, scales or not be there at all. If a composite flower possesses them, they'll be found on the very outside of the flower structure. You can't miss the bracts found on artichokes; the bracts are the part you peel off and eat, usually with butter. The clustered flower head is fitted neatly into a receptacle called an involucre. This is an adaptation of the sepals and varies in design. It may resemble a cup or tiny basket – the sepal-like parts (usually green) almost fused together or in layers overlapping like scales or leaf-like in appearance.
Petals are what give a flower its unique shape, and are often brightly colored to attract insects and what is the smallest bone in the ear, which unwittingly aid in the fertilization of ovules through pollination.
These are the small, leaf-like parts growing at the base of the petals. They serve to protect the flower before it blossoms. Making More Flowers. Some flowers have only male or female organs, and require a separate flower of the opposite gender to reproduce. We call these Imperfect Flowers. Perfect Flowerson the other hand, have both a stamen and a pistil, and are able to reproduce on their own. March 17 is St.
Patrick's Day and the celebrations will likely be different. Read more for tips on how to celebrate St. Patrick's Day at home this year. Learn how to celebrate Mardi Gras at home with these party decorating tips, craft and costume ideas and recipes.
Not sure what to get your what does the sign mean in excel formulas for Valentine's Day? We've come up with some thoughtful gift ideas that he's certain to love. Petal Petals are what give a flower its unique shape, and are often brightly colored to attract insects and critters, which unwittingly aid in the fertilization of ovules through pollination.
Sepal These are the small, leaf-like parts growing at the base of the petals. Peduncle This refers to the stem or stalk of a flower. Receptacle This is the thickened part at the bottom of the flower which holds its major organs.
Pistil This is the female organ of the flower. It consists of four major parts: Stigma — The head of the pistil. The stigma receives pollen, which will begin the process of fertilization. Style — This is the name for the stalk of the pistil. When pollen reaches the stigma, it begins to grow a tube through the style called a pollen tube, which will eventually reach the ovary.
The style therefore acts as a buffer against pollen contamination, since only compatible pollen is able to grow a pollen tube. Ovary — The base of the pistil. This organ holds the ovules awaiting fertilization. Upon fertilization by pollen, they will eventually grow into a seed. In fruit plants, pollen will not only spark the growth of a seed, but a surrounding fruit as well. Stamen This is the male organ of the flower, consisting of two major parts: Anther — The head of the stamen.
The anther is responsible for the production of pollen, which will hopefully be transported to the pistil by animals or insects, such as bees. This is a crucial part of the reproduction of the plant. Filament — This is the stalk that holds the anther and attaches it to the flower.
Share this post. Subscribe Subscribe. Related Products. Just Because Flowers. Orchids and Exotic Flowers. Garden Plants and Flowers.
COMPOSITE FAMILY FLOWER STRUCTURE
Beneath the flower head there is a collection ofmodified leaves, or bracts, forming the involucre, in the above pictureseen at the right. Each individual bract is technically known as a phyllary(FIL-uh-ree). Above you see phyllaries of a Chrysanthemum flower, which are somewhat different. Feb 28, · plants have composite 'flowers' which are actually flower-like inflorescences. In these composites, the individual flowers are also called florets. The inflorescence is a swollen axis, termed a receptacle, which is in the form of a flattened disc bearing the individual flowers. Feb 27, · These are the small, leaf-like parts growing at the base of the petals. They serve to protect the flower before it blossoms. Peduncle. This refers to the stem or stalk of a flower. Receptacle. This is the thickened part at the bottom of the flower which holds its major organs. Pistil. This is the female organ of the flower. It consists of four major parts.
Learn which plants thrive in your Hardiness Zone with our new interactive map! At first glance, a composite flower like the daisy looks simple, with petals forming rays around a colorful disk. Upon closer inspection, however, these flowers aren't simple at all. The flower is actually made up of many flowers--inflorescences--masquerading as a single flower. Each "petal" is a flower, as is each bump on the disk.
Other examples of composite flowers are sunflowers, chrysanthemums, dandelions and zinnias. On a composite flower, what look to be petals radiating from the center in spoke-like fashion are individual blooms called ray flowers.
They are sometimes described as "ligulate," which refers to their strap-like shape. Some composite flowers--the dandelion and chrysanthemum, for instance--only possess ray flowers. Composites like the sunflower also include disk flowers found at the center. The location of disk flowers are easy to spot in the center of a composite flower such as aster; the ray flowers point inward to where disk flowers are packed together. Some composites, though, only possess disk flowers. These include thistles and burdock.
Each disk flower produces one seed and is either female or a hermaphrodite with both male and female parts. Disk flowers tend to be shaped like tubes. Stamens are one of the four major flower parts along with pistils, petals and sepals. Stamens are the male parts in flowers that have them, producing sperm in rounded lobes called anthers. In composite flowers, often the anthers fuse together to form a ring around the female pistil. The female flower parts are called carpels, often fused into a single pistil that's found at the center of any flower that possesses them, including disk flowers.
In composite flowers, the pistil's style--a stalk connecting the pistil's ovary and stigma--rises up in the middle of the ring of stamens. The fruits of a composite flower are called achenes. This includes fruit from the sunflower, which in everyday parlance are known simply as sunflower seeds. On a flower, sepals are accessory parts--that is, they aren't directly involved in reproduction. They are usually leaf like, though in composite flowers, they are transformed to something more akin to scales, or into what are termed pappuses, which look like hairs, threads, bristles or even barbs.
Pappuses can help with seed dispersal. Barbs, for instance, hook into animals, carrying seed. Children often blow dandelion pappuses, sending the seeds floating away. Bracts, like sepals, are leaf-like growths. They may look like sepals, petals, scales or not be there at all. If a composite flower possesses them, they'll be found on the very outside of the flower structure. You can't miss the bracts found on artichokes; the bracts are the part you peel off and eat, usually with butter.
Rows of bracts are called involucres. The receptacle of a composite flower is the top of the stem from which all the flowers arise. Though it isn't strictly part of the flower, it is a good starting place to identify the parts of a composite "flower," since parts occur in the same order on all flowers. Cutting a composite in half through the receptacle can help a gardener become familiar with the workings and structure of composite flower.
Sophie Johnson is a freelance writer and editor of both print and film media. A freelancer for more than 20 years, Johnson has had the opportunity to cover topics ranging from construction to music to celebrity interviews. Share this article. Daisy, Daisy.