Solandra is a genus of flowering plants in the family Solanaceae, which includes popular ornamental vines known for their beautiful and fragrant flowers. The genus Solandra comprises about 11 known species, native to tropical regions of Central and South America, particularly Mexico and Costa Rica.

The most well-known species in the Solandra genus is Solandra maxima, commonly known as the cup of gold vine or golden chalice vine. This species features large, trumpet-shaped flowers that are golden yellow in color, hence the common names. The flowers are usually fragrant and attract pollinators such as bees and butterflies.

Cup of gold vine is a vigorous climber that can reach significant heights, making it suitable for trellises, fences, or pergolas. It has glossy, dark green leaves and produces clusters of flowers throughout the year, with peak blooming occurring in spring and summer.

Solandra species are generally easy to grow in warm, tropical climates or in greenhouses. They prefer full sun to partial shade and well-draining soil. Regular watering is necessary, but they can tolerate short periods of drought once established. Pruning may be required to control their growth and maintain a desired shape.

While Solandra species are primarily cultivated for their ornamental value, it's important to note that some parts of the plants, particularly the leaves and stems, contain toxic compounds. Therefore, caution should be exercised when handling these plants, especially if there are pets or small children around.

Overall, Solandra species, especially Solandra maxima, are cherished for their striking flowers and can add a touch of tropical beauty to gardens or indoor spaces with proper care.