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A new species, Jatropha stevensii, is described from collections in Dept. Boaco in Nicaragua. It may be assigned to subg. Curcas and appears related to Jatropha fremontioides, a species from southern Mexico. Jatropha stevensii represents yet another extension of the Mexican xerophytic element into Central America, and the second record for Jatropha subg. Curcas. I I wish to thank Ms. Lynn Gillespie for the photograph of the type collection.doi:10.2307/2399266 fatcat:36e654el3napvmprelagcuxeja