calyx
Noun: 1. (Botany) The collective term for the sepals of a flower: The calyx is the outermost whorl of a flower, typically green and leaf-like, that encloses and protects the developing flower bud before it opens. It forms part of the perianth (the non-reproductive floral envelope).
The word "calyx" is used specifically in botanical contexts to describe a distinct, collective plant structure. - The calyx protects the delicate petals and reproductive organs while the flower is in bud. - Botanists noted the unusual color of the calyx, which was tinged with red instead of the usual green.
- Calyx tube: A structure formed when the sepals of the calyx are fused together for part or all of their length.
- In members of the rose family, the calyx tube often surrounds the base of the petals and stamens.
- Calyces (plural): The standard plural form of "calyx."
- The flowers had persistent calyces that remained after the petals fell.
- Calycine (adjective): Of, relating to, or resembling a calyx.
- The calycine lobes were sharply pointed.
- Sepal whorl: A more descriptive synonym emphasizing the individual parts (sepals) that make up the whole.
- Floral envelope (outer): A broader term for the protective outer layers of a flower, which includes the calyx.
In anatomy, "calyx" can refer to a cup-shaped cavity or structure, such as in the kidney. However, this is a distinct, specialized usage. - The renal calyx collects urine from the kidney pyramids.
- (botany) the whorl of sepals of a flower collectively forming the outer floral envelope or layer of the perianth enclosing and supporting the developing bud; usually green