Thespesia grandiflora, commonly known as Flor de Maga, is a striking flowering tree native to Puerto Rico. It holds significant cultural and ecological importance for the island, where it is recognized as the national flower. This species is a member of the Malvaceae family, which also includes hibiscus and cotton. Flor de Maga is a medium to large tree, typically reaching heights of 10 to 20 meters (approximately 33 to 66 feet), with a trunk diameter that can range from 30 to 60 centimeters (about 12 to 24 inches). Its growth habit is generally upright, forming a dense, rounded crown. The bark is smooth and grayish when young, becoming rougher and fissured with age. The leaves are simple, alternate, and broadly ovate to nearly circular, measuring 10 to 20 centimeters (4 to 8 inches) in length and width. They are typically palmately lobed, with 3 to 5 shallow lobes, and possess a leathery texture. The upper surface of the leaves is a deep green, while the underside is paler and may be covered in fine hairs. The most distinctive feature of Thespesia grandiflora is its large, showy flowers. These are solitary, axillary, and trumpet-shaped, measuring 10 to 15 centimeters (4 to 6 inches) in diameter. The petals are a vibrant, deep crimson to scarlet color, often with a darker crimson throat. Each flower has a prominent central column formed by the fused stamens. The flowers are ephemeral, typically opening in the morning and wilting by evening. Following pollination, the plant produces a fruit, which is a woody, ovoid capsule, 3 to 5 centimeters (1.2 to 2 inches) long. The capsule dehisces to release numerous seeds. The native distribution of Thespesia grandiflora is primarily Puerto Rico, where it thrives in coastal areas, limestone forests, and moist woodlands. It prefers well-drained soils and can tolerate a range of conditions, from full sun to partial shade. While it is adapted to tropical climates, it can be cultivated in similar environments worldwide. It is relatively drought-tolerant once established but benefits from regular watering, especially during dry periods. Beyond its ornamental appeal, Flor de Maga has historical and cultural significance. Its vibrant flowers have been used in traditional crafts and as a symbol of Puerto Rican identity. While not widely cultivated for agricultural purposes, its wood has been used locally for construction and fuel. Scientific research has explored various aspects of its biology, including its pollination ecology and potential for use in reforestation efforts in its native habitat. The plant's adaptations, such as its leathery leaves, help it to withstand the coastal conditions of its native environment.