You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Language UND Remove constraint Language: UND Place Chile Remove constraint Place: Chile Place Depto. Petoroa. Cerro Chache, 5 hours by horse southeast of Patagua Mine, ca. 18km east of La Ligua. Remove constraint Place: Depto. Petoroa. Cerro Chache, 5 hours by horse southeast of Patagua Mine, ca. 18km east of La Ligua. Place South America Remove constraint Place: South America Place Valparaíso Remove constraint Place: Valparaíso Topic Equisetales Remove constraint Topic: Equisetales Topic Polypodiopsida Remove constraint Topic: Polypodiopsida