Mozinna spathulata Ortega Jatropha dioica is a species of flowering plant in the spurge family, Euphorbiaceae, that is native to Texas in the United States as well as Mexico as far south as Oaxaca.

[3] The orange rootstock spreads to a length of around 1 m.[6] Leaves are arranged simply, alternately, or fascicularly and are clustered on short shoots extending from the stems.

[10] Sheep and goats experience severe gastroenteritis, vomiting, and abdominal pain upon consumption of the plant.

[12] The nominate variety occurs in southern and western Texas,[13] Tamaulipas, Nuevo León, and from Durango to Oaxaca.

[14] Jatropha dioica is traditionally used in the treatment of dental issues such as gingivitis, loose teeth, bleeding gums, and toothache.

[16] Sangre de drago acts as a nurse plant for small cacti such as Lophophora species.