perigone
Definition
Noun: 1. The collective term for the non-reproductive, outer parts of a flower, specifically the calyx (sepals) and corolla (petals), which together enclose the stamens and pistils. This term is used in botany to refer to the floral envelope or perianth, especially when the sepals and petals are not distinctly different from each other.
Usage
- The term perigone is a technical botanical term. It is used to describe the structure of a flower in a precise, scientific context.
- It is often used interchangeably with perianth, particularly when the flower parts are undifferentiated (tepals).
Examples
- Noun:
- In lilies and tulips, the colorful perigone is composed of similar segments called tepals.
- The primary function of the perigone is to protect the reproductive organs and attract pollinators.
Advanced Usage
- "Undifferentiated perigone": Used when the sepals and petals look identical, forming a single whorl of tepals.
- Plants like Magnolia have an undifferentiated perigone.
- The term can be used in discussions of floral morphology and evolution to describe simpler floral structures where a clear distinction between calyx and corolla has not evolved.
Variants and Related Words
- Perianth (n): The more common modern synonym for perigone, meaning the outer parts of a flower.
- Tepal (n): An individual segment or part of an undifferentiated perigone or perianth.
- Perigynous (adj): A botanical term describing a flower structure where the perigone (perianth) and stamens are attached to the rim of a cup-like extension of the receptacle, surrounding the ovary.
Synonyms
- Perianth: The non-reproductive part of a flower.
- Floral envelope: A descriptive synonym for the outer parts of a flower.
Notes on Meaning
- Perigone is a specialized term. In most general or introductory botanical contexts, perianth is the preferred and more widely understood term.
- Its usage emphasizes the protective and enclosing role of the flower's outer whorls around the essential reproductive organs (the androecium and gynoecium).
Noun
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collective term for the outer parts of a flower consisting of the calyx and corolla and enclosing the stamens and pistils
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