Mammillaria elongata (Ladyfinger cactus) is a succulent plant from the genus Mammillaria of the Cactaceae family. It grows on rocks in the Mexican states of Hidalgo, Guanajuato, and Queretaro. This greenie is one of the most popular indoor plants.
Ladyfinger cactus has a branching, elongated cylindrical stem. The stem length can reach up to 6 inches (15 cm). The number of spines from one areole ranges from 14 to 25. They are usually yellow, sometimes dark brown. The flowers are pale yellow and clustered around the top of the plant. Mammillaria also produces fruit.