You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Along MEX 37, ca. 75 km (by road) north of Arteaga and 1 km south of El Descansadero. Remove constraint Place: Along MEX 37, ca. 75 km (by road) north of Arteaga and 1 km south of El Descansadero. Place Mexico Remove constraint Place: Mexico Place Michoacán Remove constraint Place: Michoacán Topic Euphorbia Remove constraint Topic: Euphorbia Topic Euphorbiaceae Remove constraint Topic: Euphorbiaceae