Mexico, Sonora, Guaymas Municipio, Yaqui region. Ca. 0.5 km below (northward) from the ruins of the Yaqui Cuartel at Bacateve, Sierra Bacatete.
Near streambed along roadside. Running stream along bottom of narrow valley surrounded by desert/thornscrub rhyolite mountains and hills. Gallery groves of Ficus producing densae shade, riparian plants in clearings at margin of clearing in the Ficus grove.