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A floral diagram is a schematic cross-section through a young flower. [1] It may be also defined as “projection of the flower perpendicular to its axis”. [3] It usually shows the number of floral parts, [Note 2] their sizes, relative positions and fusion.
The floral diagram is a graphic representation of the arrangement of the floral parts and the arrangement of the different whorls, in a cross section of the flower. Each whorl is represented, by convention, with a concentric circumference around the gynoecium, indicated by a cut at the level of the ovary.
Floral diagramming is a method used to graphically describe a flower. In the context of floral diagramming, the floral axis represents the center point around which the diagram is oriented. [3] The floral axis can also be referred to as the receptacle in floral diagrams or when describing the structure of the flower. [4]
Nehemiah Grew's The Anatomy of Plants (1682) [41] displays detailed anatomical diagrams and cross sections of flowers and other plant structures, including the first known microscopic description of pollen.
Floral formulae are one of the two ways of describing flower structure developed during the 19th century, the other being floral diagrams. [2] The format of floral formulae differs according to the tastes of particular authors and periods, yet they tend to convey the same information. [1] A floral formula is often used along with a floral diagram.
Cross section of a tulip ovary In the flowering plants , an ovary is a part of the female reproductive organ of the flower or gynoecium . Specifically, it is the part of the pistil which holds the ovule (s) and is located above or below or at the point of connection with the base of the petals and sepals .
Diagram of a typical drupe (in this case, a peach), showing both fruit and seed A schematic picture of an orange hesperidium A segment of an orange that has been opened to show the pulp (juice vesicles) of the endocarp. Fruit anatomy is the plant anatomy of the internal structure of fruit.
Satyrium carneum.Ground orchid with typical zygomorphic floral anatomy. Zygomorphic ("yoke shaped", "bilateral" – from the Greek ζυγόν, zygon, yoke, and μορφή, morphe, shape) flowers can be divided by only a single plane into two mirror-image halves, much like a yoke or a person's face.