Corolla
/kəˈrɑlə/
Definition
Corolla refers to the collective petals of a flower. It is a floral structure positioned just inside the sepals and often forms the most visible part of the bloom. The petals may be separate or fused into a tube, bell, or other shape. In many plants, the corolla helps attract pollinators through color, pattern, or scent, which distinguishes it from the outer, usually greener calyx made of sepals.
Botanical Significance
- Pollinator attraction: The corolla often carries the color, pattern, and scent cues that guide pollinators to nectar and pollen, which can improve the chances of successful pollination.
- Shape and pollination strategy: Its form can match particular visitors, such as bees, moths, or birds, so differences in length, width, or tube shape may influence which animals can reach floral rewards.
- Helpful identification feature: Botanists and gardeners often compare the corolla when identifying plants, because traits like fusion, symmetry, and lobe number are useful in classification.
- Protection before opening: In many flowers, the corolla helps shield the reproductive parts while the bud develops, then opens to expose them when the flower is ready for pollination.
Related Terms
Petal
Petal refers to one of the individual parts of a flower’s corolla, the inner set of leaf-like structures located just…
Flower
Flower is the reproductive structure of a flowering plant, usually containing stamens, which produce pollen, and one or…
Perianth
Perianth is the collective term for the non-reproductive outer parts of a flower that surround the stamens and pistil…
Calyx
Calyx refers to the outermost whorl of a flower, made up of the sepals taken together. It sits below the petals and…
Sepal
Sepal refers to one of the outermost, usually leaf-like parts of a flower. A sepal is part of the calyx, the ring of…
Tepal
Tepal refers to one of the flower parts in a perianth where sepals and petals are not clearly different in size, color…
Tube
In botany, a tube is a cylindrical or hollow part formed when tissues are naturally elongated or fused into a narrow…
Throat
Throat refers to the inner opening or narrowed entrance of a flower’s corolla, the collective petals, especially in…