jatropha dioica

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. Common names include leatherstem and sangre de drago. The specific name refers to the dioecious nature of the plants.

Jatropha dioica forms colonies from subterranean rhizomes. The arching, succulent stems reach a height of 20–60 cm and have few branches. They are tough and sufficiently flexible to be tied into overhand knots ...