You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Above MEX. 80, just e. of crest of Sierra Chamal, 6 mi. w. of Antiguo Morelos Remove constraint Place: Above MEX. 80, just e. of crest of Sierra Chamal, 6 mi. w. of Antiguo Morelos Place Mexico Remove constraint Place: Mexico Place North America Remove constraint Place: North America Place Tamaulipas Remove constraint Place: Tamaulipas Topic Euphorbiaceae Remove constraint Topic: Euphorbiaceae