Perianth
Perianth
Perianth (/pɛriˈænθ/; from the Greek words peri, meaning "around", and anthos, meaning "flower") is a collective term for the non-reproductive parts of a flower, typically consisting of the calyx (the outermost whorl, usually green and leaf-like) and the corolla (the inner whorl, usually colorful and petal-like).
Etymology
The term "perianth" is derived from the Greek words "peri", meaning "around", and "anthos", meaning "flower". It was first used in the English language in the early 19th century.
Structure
The perianth is divided into two distinct parts: the outer calyx and the inner corolla. The calyx is usually green and leaf-like, serving to protect the flower during its development. The corolla, on the other hand, is typically colorful and petal-like, attracting pollinators to the flower.
Function
The primary function of the perianth is to protect the reproductive parts of the flower and attract pollinators. The colorful corolla serves to attract insects and other animals for pollination, while the calyx protects the developing flower.
Related Terms
- Calyx: The outermost whorl of the perianth, usually green and leaf-like.
- Corolla: The inner whorl of the perianth, usually colorful and petal-like.
- Petal: A segment of the corolla in a flower.
- Sepal: A segment of the calyx in a flower.
- Tepal: A segment of the perianth in a flower where the calyx and corolla are not distinct.
External links
- Medical encyclopedia article on Perianth
- Wikipedia's article - Perianth
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