corolla
Quick Summary
The corolla is the part of a flower composed of petals, typically colorful, and located above the sepals. Collectively, all the petals of a flower are called the corolla, and all the sepals form the calyx. Together, the calyx and corolla make up the perianth. The name "corolla" originates from the Latin word for a small wreath of flowers.12
The petals of the corolla often attract pollinators like insects and birds. The number of petals usually matches the number of sepals. Floral symmetry is determined by the petals; if they are uniform in size and shape, the flower has radial symmetry and is considered regular or actinomorphic. If at least one petal differs, the flower has bilateral symmetry and is irregular or zygomorphic. Petals can be separate or fused, forming tubular structures. Some petals contain nectaries that produce sweet compounds or fragrances to attract pollinators.3
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angiospermThe corollaThe petals composing the corolla are typically brightly colored or white and attract insects and birds for pollination (see below Reproduction: Pollination). The number of petals is usually the same as the number of sepals. Floral symmetry is defined by the petals (Figure 13).…
Read MoreThe petals composing the corolla are typically brightly colored or white and attract insects and birds for pollination (see below Reproduction: Pollination). The number of petals is usually the same as the number of sepals. Floral symmetry is defined by the petals (Figure 13).…
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AsteraceaeFlowers…some or all of the corollas bilabiate (two-lipped), with a large, three-lobed (sometimes four-lobed) outer lip and a smaller, two-lobed (or one-lobed) inner lip. These bilabiate flowers may be either pistillate or perfect. When pistillate, they are always external to any perfect flowers that may be present in the head.…
Read More…some or all of the corollas bilabiate (two-lipped), with a large, three-lobed (sometimes four-lobed) outer lip and a smaller, two-lobed (or one-lobed) inner lip. These bilabiate flowers may be either pistillate or perfect. When pistillate, they are always external to any perfect flowers that may be present in the head.…
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AsteralesAsteraceae…modified, mainly flat and elongate corolla that resembles an individual petal of most other flowers. Thus, the “petals” of a daisy or sunflower are actually the outermost flowers of the head. An inflorescence of this family can have more than 1,000 individual flowers (called florets), and the heads can be…
Read More…modified, mainly flat and elongate corolla that resembles an individual petal of most other flowers. Thus, the “petals” of a daisy or sunflower are actually the outermost flowers of the head. An inflorescence of this family can have more than 1,000 individual flowers (called florets), and the heads can be…
Read More- AsteralesCampanulaceae
…which displays a brilliant red corolla, in contrast to the blue or white colours of the majority of related species. L. inflata (Indian tobacco) is native to eastern and central North America and has a tobacco taste; it was used as an emetic by Amerindians. This and other Lobelia species…
Read More…which displays a brilliant red corolla, in contrast to the blue or white colours of the majority of related species. L. inflata (Indian tobacco) is native to eastern and central North America and has a tobacco taste; it was used as an emetic by Amerindians. This and other Lobelia species…
Read More - AsteralesOther families
The corolla is often divided to the base on one side, and the petals have marginal wings that may make each look trilobed. Several herbaceous species of Scaevola are important ornamentals, especially as basket plants.
Read MoreThe corolla is often divided to the base on one side, and the petals have marginal wings that may make each look trilobed. Several herbaceous species of Scaevola are important ornamentals, especially as basket plants.
Read More - AsteralesOther families
…outer layer of the tubular corolla is photosynthetic, the stamens are free, and the ovary is inferior. As with Asteraceae, the family has plunger pollination mechanisms and the ovary has two carpels, with only one ovule developing into a seed.
Read More…outer layer of the tubular corolla is photosynthetic, the stamens are free, and the ovary is inferior. As with Asteraceae, the family has plunger pollination mechanisms and the ovary has two carpels, with only one ovule developing into a seed.
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flowerForm and types…within it lies (2) the corolla, consisting of petals; (3) the androecium, or group of stamens; and in the center is (4) the gynoecium, consisting of the pistils.
Read More…within it lies (2) the corolla, consisting of petals; (3) the androecium, or group of stamens; and in the center is (4) the gynoecium, consisting of the pistils.
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