Selenicereus anthonyanus is a captivating epiphytic cactus native to the tropical rainforests of Mexico. This species is renowned for its striking, flattened, leaf-like stems and its spectacular nocturnal blooms, making it a prized specimen among succulent and cactus enthusiasts. Its significance lies in its unique morphology within the cactus family and its contribution to the biodiversity of its native ecosystems. The growth habit of Selenicereus anthonyanus is scandent or epiphytic, meaning it typically climbs or grows on other plants. Its stems are segmented, highly flattened, and can reach lengths of up to 3 meters (approximately 10 feet), though they are often shorter in cultivation. These stems are a vibrant green and possess a leathery texture, with undulating or wavy margins that give them a distinctive, almost ribbon-like appearance. The areoles, small cushion-like structures from which spines and flowers emerge, are located along the stem margins. While some species in the genus Selenicereus have prominent spines, Selenicereus anthonyanus typically bears very small, bristle-like spines, or sometimes none at all, contributing to its smooth, elegant profile. The flowers are a true spectacle, opening only at night and lasting for a single night. They are large, often exceeding 20 centimeters (8 inches) in diameter, and are typically white or creamy white, with a strong, sweet fragrance. The petals are numerous and often delicate, surrounding a prominent cluster of stamens. Following successful pollination, the plant may produce a small, fleshy fruit, though this is less commonly observed in cultivation. Selenicereus anthonyanus is found in its native habitat in the humid tropical forests of southeastern Mexico, where it thrives in the dappled shade of the forest canopy. It often grows as an epiphyte, attaching itself to tree branches or rocks, benefiting from the moisture and nutrients available in these elevated positions. In cultivation, it requires conditions that mimic its natural environment. This includes well-draining potting mix, bright indirect light, and consistent moisture during the growing season, with reduced watering in cooler, drier periods. Protection from frost is essential, as it is not cold-hardy. The primary importance of Selenicereus anthonyanus is ornamental, owing to its unusual foliage and magnificent, fragrant flowers. Its unique form and ephemeral blooms make it a sought-after plant for collectors and those interested in exotic flora. While specific medicinal, culinary, or economic uses are not widely documented for this particular species, its ecological role within its native rainforest environment is significant, contributing to the complex web of life. An interesting adaptation of Selenicereus anthonyanus, shared by many nocturnal-blooming cacti, is its strategy of opening its flowers at night. This allows it to attract nocturnal pollinators, such as moths and bats, ensuring successful reproduction in its natural habitat. The flattened, leaf-like stems are also a characteristic adaptation, maximizing surface area for photosynthesis in the shaded understory of the rainforest.