You searched for: Institution University of Michigan. Libraries Remove constraint Institution: University of Michigan. Libraries Place El Gavilán; Aldama; ca. 40 km NE of Aldama near Barra del Tordo, on short side road to the playa; near sea level Remove constraint Place: El Gavilán; Aldama; ca. 40 km NE of Aldama near Barra del Tordo, on short side road to the playa; near sea level Place Mexico Remove constraint Place: Mexico Place Tamaulipas Remove constraint Place: Tamaulipas Topic Poaceae Remove constraint Topic: Poaceae