You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place Canon of the Rio Zavaleta near the village of San Pablo Cuatro Venados, 15-18 km W, SW of Oaxaca Remove constraint Place: Canon of the Rio Zavaleta near the village of San Pablo Cuatro Venados, 15-18 km W, SW of Oaxaca Place North America Remove constraint Place: North America Place Oaxaca Remove constraint Place: Oaxaca Topic Euphorbia Remove constraint Topic: Euphorbia Topic Euphorbiaceae Remove constraint Topic: Euphorbiaceae Topic Magnoliopsida Remove constraint Topic: Magnoliopsida