PetalUsually the brightly colored part of a flower, there to draw pollinators. All the petals together are the corolla. Dicots tend to have four or five petals or a multiple of those, monocots three or a multiple of three.
StamenThe male organ of a flower: a filament with an anther at its tip. All the stamens together are the androecium, the third ring of parts counting inward from the sepals.
SepalA green, leaf-like part of the outermost ring of the flower. Sepals protect the unopened flower bud, and most can photosynthesize. All the sepals together are the calyx.
Pistil (carpel)The female organ: stigma, style and ovary together. Its building unit is the carpel. A flower may have one carpel or several, and fused carpels form one pistil. All the carpels together are the gynoecium.
Male parts 3
Pollen grainsThe dust-like grains made in the anther. Each grain is a male gametophyte with two cells inside a thick outer wall: one cell grows the pollen tube and the other divides into two sperm.
AntherThe sac-like tip of a stamen. Pollen grains develop inside its pollen sacs. When the grains are mature the sacs burst open and release them.
FilamentThe thin, thread-like stalk of a stamen. It holds the anther up.
Female parts 4
StigmaThe top of the pistil, where pollen is deposited by the wind or by a pollinator. Its sticky surface catches the grains and holds them.
StyleThe narrow neck of the pistil. It joins the stigma to the ovary, and the pollen tube grows down through it.
OvaryThe wide base of the pistil. It houses one or more ovules. After fertilization its wall thickens and it becomes the fruit.
OvuleA small body inside the ovary that holds the egg cell. An ovule that is fertilized develops into a seed.
Petals, sepals and stalk 3
ReceptacleThe thickened end of the flower stalk, where the sepals, petals, stamens and pistil attach. Older books call it the torus or the thalamus. In a strawberry it swells into the part you eat.
NectaryA gland that makes nectar, a sugar-rich liquid that draws pollinators. Its place depends on the species: it can sit on the receptacle, a petal, a stamen or the ovary. This drawing puts it at the foot of the ovary.
Peduncle (flower stalk)The stalk that joins the flower to the rest of the plant. When flowers grow in a cluster, the stalk of the whole cluster is the peduncle and the small stalk of each single flower is a pedicel.
Pollen's path 1
Pollen tubeA tube that grows from a pollen grain once it lands on the stigma. It runs down through the style into the ovary and enters an ovule through a small opening, the micropyle. The sperm travel inside it.
How this list was compiled: Part names and every detail line were checked, for facts only and with nothing copied, against OpenStax Biology 2e, read 2026-09-19: section 32.1 Reproductive Development and Structure, https://openstax.org/books/biology-2e/pages/32-1-reproductive-development-and-structure (the four whorls and their order, sepal and calyx, petal and corolla, stamen, anther, filament, pollen sacs, the two cells and the exine of a pollen grain, carpel, stigma, style, ovary, ovule, pollen tube and micropyle, complete and perfect flowers, petal numbers in monocots and dicots); and section 26.3 Angiosperms, https://openstax.org/books/biology-2e/pages/26-3-angiosperms (peduncle, receptacle as the point of attachment, sepals as photosynthetic organs, stigma as the place where pollen is deposited, style, ovary wall becoming the fruit, ovule becoming the seed, fused carpels as a pistil, tepals in magnolia, lily and tulip). The pistil as stigma, style and ovary, the sticky stigma and the thread-like filament were also checked on University of Illinois Extension, The Great Plant Escape, Flower Parts, https://web.extension.illinois.edu/gpe/case4/c4facts1a.html, read 2026-09-19. Four points that OpenStax does not cover were checked on Wikipedia, read 2026-09-19: nectary, nectar and where nectaries sit, https://en.wikipedia.org/wiki/Nectar; pedicel and peduncle, https://en.wikipedia.org/wiki/Pedicel_(botany); torus, thalamus and the strawberry receptacle, https://en.wikipedia.org/wiki/Receptacle_(botany); sepals as modified leaves, https://en.wikipedia.org/wiki/Flower. The Spanish names in es were checked on Spanish Wikipedia, read 2026-09-19: https://es.wikipedia.org/wiki/Flor, https://es.wikipedia.org/wiki/Nectario, https://es.wikipedia.org/wiki/Tubo_pol%C3%ADnico and https://es.wikipedia.org/wiki/Ped%C3%BAnculo. Labels, hints, detail lines, groups and position notes were written for this site. Licence: own work
The drawing: Drawn for this site, 2026-09-19. Own original line drawing of a generalized flower, not a portrait of one species; nothing traced or copied. Looked at for accuracy only, text read 2026-09-19, no picture opened: https://en.wikipedia.org/wiki/Stamen, https://en.wikipedia.org/wiki/Gynoecium, https://en.wikipedia.org/wiki/Ovule, plus the part list and layout brief in this dataset. Licence: own work
How it works
This labeled flower diagram is one complete flower cut in half from top to bottom, so the ovary, its ovules and a pollen tube show. Fifteen parts carry a numbered ring to find or to name. A simple set keeps the 4 main parts.
Read the full guide
Label the parts of a flower
Find it gives a name, say stigma, and the answer is a tap on one of the 15 rings around the flower. In Name it a ring lights and you choose from four names or type one: carpel counts for pistil. A dashed outline marks a whole organ, such as the stamen. The group Pollen's path holds 7 parts in the order pollination uses them, from anther to ovule. After each round, the main button reviews the parts you missed.
Blank flower diagram to print
Print blank makes an unlabeled flower diagram with 15 numbered rings and 15 empty lines, a parts of a flower worksheet a class can fill in with the screen off. Print labelled writes the names in and works as the key. The drawing is plain line art, so children can color the petals and sepals before they label them. Save as PDF in the print window keeps either sheet.
Stamen has the word men in it, and it is the male part: anther on top, filament below.
Down the pistil the order is stigma, style, ovary. The stigma is sticky, so pollen that lands on it stays.
Ovary and ovule are easy to swap. The ovary is the whole swollen base and becomes the fruit, and the ovules inside it become seeds.
Questions and answers
What are the 4 main parts of a flower and their functions?
Sepals, petals, stamens and the pistil. Sepals protect the flower bud. Petals draw pollinators. Stamens are the male parts and make pollen. The pistil is the female part, where seeds form. The group Simple: 4 main parts quizzes only these, which suits preschool and kindergarten.
What are the male and female reproductive parts of a flower?
The male part is the stamen: a filament with an anther at its tip, where pollen is made. The female part is the pistil, or carpel. Its stigma catches pollen, its style is the neck, and its ovary holds the ovules. Male parts and Female parts are groups of their own.
What are the parts of a flower in Spanish?
Pétalo, sépalo, estambre and pistilo are the four main parts. A stamen is an antera on a filamento. The pistil is the estigma, the estilo and the ovario, which holds each óvulo. The stalk is the pedúnculo. The quiz itself asks in English only.