Achene

achenesutricleutriclesakeneachenialcypselaone-seeded dry fruittrue seedUtricle (fruit)
An achene (Greek ἀ, a, privative + χαίνειν, chainein, to gape; also sometimes called akene and occasionally achenium or achenocarp) is a type of simple dry fruit produced by many species of flowering plants.wikipedia
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Flowering plant

Angiospermsflowering plantsangiosperm
An achene (Greek ἀ, a, privative + χαίνειν, chainein, to gape; also sometimes called akene and occasionally achenium or achenocarp) is a type of simple dry fruit produced by many species of flowering plants.
This included flowering plants possessing seeds enclosed in capsules, distinguished from his Gymnospermae, or flowering plants with achenial or schizo-carpic fruits, the whole fruit or each of its pieces being here regarded as a seed and naked.

Fruit

fruitsfruitingfresh fruit
An achene (Greek ἀ, a, privative + χαίνειν, chainein, to gape; also sometimes called akene and occasionally achenium or achenocarp) is a type of simple dry fruit produced by many species of flowering plants.
The strawberry is also an aggregate-accessory fruit, only one in which the seeds are contained in achenes.

Ranunculus

buttercupbuttercupswater crowfoot
The fruits of buttercup, buckwheat, caraway, quinoa, amaranth, and cannabis are typical achenes.
The fruits (in this case called achenes) may be smooth or hairy, winged, nobby or have hooked spines.

Caraway

caraway seedcaraway seedsCarum carvi
The fruits of buttercup, buckwheat, caraway, quinoa, amaranth, and cannabis are typical achenes.
Caraway fruits (erroneously called seeds) are crescent-shaped achenes, around 2 mm long, with five pale ridges.

Strawberry

strawberriesgarden strawberryFragaria ananassa
The achenes of the strawberry are sometimes mistaken for seeds.
Each apparent "seed" (achene) on the outside of the fruit is actually one of the ovaries of the flower, with a seed inside it.

Cannabis

marijuanahemppot
The fruits of buttercup, buckwheat, caraway, quinoa, amaranth, and cannabis are typical achenes.
All known strains of Cannabis are wind-pollinated and the fruit is an achene.

Buckwheat

Fagopyrum esculentumbuckwheat flourF. esculentum
The fruits of buttercup, buckwheat, caraway, quinoa, amaranth, and cannabis are typical achenes.
The fruit is an achene, similar to sunflower seed, with a single seed inside a hard outer hull.

Samara (fruit)

samarasamaraesamaras
A winged achene, such as in maple, is called a samara.
A samara (, UK also: ) is a winged achene, a type of fruit in which a flattened wing of fibrous, papery tissue develops from the ovary wall.

Rose

Rosarosesred rose
A rose produces an aggregate of achene fruits that are encompassed within an expanded hypanthium (aka floral tube), which is a structure where basal portions of the calyx, the corolla, and the stamens unite with the receptacle to form a cup-shaped tube.
There are multiple superior ovaries that develop into achenes.

Aggregate fruit

aggregatecluster
The strawberry is an aggregate fruit with an aggregate of achenes on its outer surface, and what is eaten is accessory tissue.

Caryopsis

caryopsesgrainscaryopes
A caryopsis or grain is a type of fruit that closely resembles an achene, but differs in that the pericarp is fused to the thin seed coat in the grain.
In botany, a caryopsis (plural caryopses) is a type of simple dry fruit—one that is monocarpellate (formed from a single carpel) and indehiscent (not opening at maturity) and resembles an achene, except that in a caryopsis the pericarp is fused with the thin seed coat.

Diaspore (botany)

diasporediasporesdisseminule
This type sometimes is called a tumble fruit or diaspore.
Diaspores such as achenes and samarae are dispersed primarily by wind; samaras are dispersed also by sailing or tumbling as they fall in still air.

Taraxacum

dandeliondandelionsdandelion greens
Many cypselas (e.g. dandelion) have calyx tissue attached that functions in biological dispersal of the seed.
The flower heads mature into spherical seed heads sometimes called blowballs or clocks (in both British and American English) containing many single-seeded fruits called achenes.

Tumbleweed

tumbleweed habit
Some achenes have accessory hair-like structures that cause them to tumble in the wind in a manner similar to a tumbleweed.
Some are technically achenes.

Asteraceae

daisy familysunflower familydisc floret
The fruit of the family Asteraceae is also so similar to an achene that it is often considered to be one, although it derives from a compound inferior ovary (with one locule).
In members of the Asteraceae the fruit is achene-like, and is called a cypsela (plural cypselae).

Privative

-less
An achene (Greek ἀ, a, privative + χαίνειν, chainein, to gape; also sometimes called akene and occasionally achenium or achenocarp) is a type of simple dry fruit produced by many species of flowering plants.

Gynoecium

pistilcarpelstyle
Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not open at maturity).

Dehiscence (botany)

dehiscentindehiscentcaducous
Achenes are monocarpellate (formed from one carpel) and indehiscent (they do not open at maturity).

Seed

seedsseed coatkernel
Achenes contain a single seed that nearly fills the pericarp, but does not adhere to it.

Fruit anatomy

pericarpendocarpepicarp
Achenes contain a single seed that nearly fills the pericarp, but does not adhere to it.

Quinoa

Chenopodium quinoaC. quinoaInternational Year of Quinoa
The fruits of buttercup, buckwheat, caraway, quinoa, amaranth, and cannabis are typical achenes.

Amaranth

Amaranthuspigweedamaranths
The fruits of buttercup, buckwheat, caraway, quinoa, amaranth, and cannabis are typical achenes.

Accessory fruit

anthocarpfalse fruitaccessory
The strawberry is an aggregate fruit with an aggregate of achenes on its outer surface, and what is eaten is accessory tissue.

Maple

Acermaple treemaple trees
A winged achene, such as in maple, is called a samara.

Anemone virginiana

Anemone virginiana'' var. ''virginiana
An example is Anemone virginiana.