mala-mujer

from The Century Dictionary.

• noun A name applied in Mexico to several pernicious plants, some of which are armed with prickles. Among them are Solanum rostratum, called sand-bur in the southwestern United States; Cnidoscolus urens (Jatropha urens of Linnæus), which is armed with stinging hairs; and Rhus Toxicodendron, the poison-oak, also called guao and tetlatia. See guao and tetlatia.