You searched for: Place North America Remove constraint Place: North America Place Oaxaca Remove constraint Place: Oaxaca Place Valley of Yelagago River, ca. 20 mi. n.e. of Villa Alta. Between Hallberg ranch and river to the south. Remove constraint Place: Valley of Yelagago River, ca. 20 mi. n.e. of Villa Alta. Between Hallberg ranch and river to the south. Topic Hymenophyllaceae Remove constraint Topic: Hymenophyllaceae Topic Polypodiopsida Remove constraint Topic: Polypodiopsida