An achene is a type of simple dry fruit produced by many species of flowering plants. Achenes are monocarpellate (formed from one carpel) and indehiscent (do not open at maturity) and contain a single seed that nearly fills the pericarp, but does not adhere to it. In many species, what we think of as the "seed" is actually an achene, a fruit containing the seed. Typical achenes are the fruits of buttercup and buckwheat. It is sometimes spelled akene, and rarely called achenium or achenocarp. Fruit stall in Barcelona, Spain. ... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also angiosperms or Magnoliophyta) are one of the major groups of modern plants, comprising those that produce seeds in specialized reproductive organs called flowers, where the ovulary or carpel is enclosed. ... A seed is the ripened ovule of gymnosperm or angiosperm plants. ... This article is about the flower. ... Species Fagopyrum esculentum Fagopyrum tataricum Buckwheat (Fagopyrum esculentum common buckwheat, and Fagopyrum tataricum Tatar buckwheat) are plants in the genus Fagopyrum (sometimes classified as Polygonum) in the family Polygonaceae. ...

The most famous achenes are those of the strawberry, where the 'seeds' are the achenes (technically the 'botanical' fruits), while what is eaten as the ('culinary') fruit is a so-called accessory fruit. Species See text The strawberry (Fragaria) is a genus of plants in the family Rosaceae, and the fruit of these plants. ... An accessory fruit is a fruit in which the fleshy part is derived not from the ovary (or surrounding stem, if the ovary is inferior) but from some adjacent tissue. ...

Fruits of sedges are also considered achenes sometimes because it has a one-locule compound ovary. By the same definition, the common fruit type in the Family Asteraceae is also usually considered achene (some term the asteraceous achene cypsela, however). A sunflower "seed" in the husk is not really a seed, but an achene. The white-gray husks are the walls of the fruit. Genera See text The family Cyperaceae, or the Sedge family, is a taxon of monocot flowering plants that superficially resemble grasses or rushes. ... Genera many, see list The aster or sunflower family (Family Asteraceae or, alternatively Family Compositae) is a taxon of dicotyledonous flowering plants. ... Binomial name Helianthus annuus L. The sunflower (Helianthus annuus) is an annual plant in the Family Asteraceae with a large flower head (inflorescence). ...

A grain, a type of fruit closely resembling an achene, differs in that the pericarp is fused to the thin seed coat in the grain. The word grain has several meanings, most being descriptive of a small piece or particle. ...

A winged achene, such as in maple, is a samara. Species with pages written Acer campestre - Field Maple Acer grandidentatum - Bigtooth Maple Acer griseum - Paperbark Maple Acer macrophyllum - Bigleaf Maple Acer micranthum - Komine Maple Acer negundo - Manitoba Maple Acer nigrum - Black Maple Acer palmatum - Japanese Maple Acer pensylvanicum - Striped Maple Acer platanoides - Norway Maple Acer pseudoplatanus - Sycamore Maple Acer rubrum... Maple samara or key A samara is a type of fruit in which a flattened wing of fibrous, papery tissue develops from the ovary wall. ...

Utricle is like an achene, but it doesn't have a simple ovary, but a compound one. In addition, its fruit ovary becomes bladdery or corky. Otolith organ Utricle is also a fruit type, found in beet and dock. ...