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gynoecium

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Gynoecium
Gynoecium (from Ancient Greek , gyne, meaning woman, and , oikos, meaning house) is most commonly used as a collective term for all carpels in a flower. In many cases it may also include other parts of the flower. Traditionally a carpel is defined as an appendage that bears and encloses ovule(s). Carpels are thought to be phylogenetically derived from ovule-bearing leaves or leaf homologues (megasporophylls), which evolved to form a closed structure containing the ovules. They do this by folding and fusing at their edges to form a chamber in which the ovules develop. In many flowers, several to many carpels are thought to be "fused" into a structure that sometimes may resemble a single carpel. The term gynoecium is useful because it refers to the ovule producing structure in a flower, whether it is a single carpel, multiple unfused carpels or multiple "fused" carpels. In many flowers, the gynoecium is the innermost whorl of structures and is surrounded by the androecium (stamens) and then by the perianth (all the petals and sepals). In imperfect or incomplete flowers the androecium and perianth, respectively, may be absent. The gynoecium is often referred to as female because it gives rise to female (egg-producing) gametophytes, however, strictly speaking sporophytes do not have sex, only gametophytes do. Flowers that bear a gynoecium but no androecium are called carpellate. Flowers lacking a gynoecium are called staminate.

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Gynoecium
Het gynoecium is bij Embryophyta het geheel van de bij elkaar geplaatste vrouwelijke voortplantingsorganen. De naam 'gynoecium' is afkomstig van de Griekse woorden γυνή, gune , wat 'vrouw' betekent, en οἶκος, oikos, wat 'huis' betekent.

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Carpelo
Los carpelos (también pistilos) son hojas que forman la parte reproductiva femenina de la flor de las plantas angiospermas. Son la unidad básica del gineceo. Por su carácter de hojas portadoras de megásporas (o macrósporas), las células por cuya multiplicación se forma el gametófito femenino (el saco embrional), los carpelos son megasporofilos (o macrosporofilos).

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Stempel (Botanik)
Als Stempel oder Pistill bezeichnet man in der Botanik die miteinander zu einem coenokarpem Gynoeceum verwachsenen Fruchtblätter der Blüte mancher Bedecktsamer. Die Namensgebung erfolgte aufgrund der Ähnlichkeit zum Pistill als Werkzeug, mit dem Reibegut in einer starkwandigen Reibschale zerkleinert wird.

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Carpelle
Le carpelle est une enveloppe protectrice supplémentaire du pistil, d'origine foliacée, définissant notamment l'ovaire chez les spermaphytes. C'est une caractéristique fondamentale des Angiospermes dans la mesure où les ovules y sont hermétiquement enfermés.

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