Graptopetalum bellum, also known as Tacitus bellus, was discovered by Alfred Lau in 1972 in West Mexico (states of Chihuahua and Sonora) at an altitude of 1460 meters (4800 feet).
Tacitus bellus is a slowly clustering perennial succulent plant. The rosettes are up to 10 centimeters in diameter almost flat to the ground. Leaves are glabrous, approximately triangular, 25 millimeters long, grey or bronze in color.
Flowers appear from May to July. At the top of a 10 centimeter inflorescence, the flowers are over 2.5 centimeters in diameter, and are deep pink to red in color. The individual flowers are 5 petalled, star-shaped and have dark pink stamens and white anthers. It grows in rocky terrain with moderate sun exposure.