RH042, dasyacanthus, USA, Texas, Big Bend
RH057, engelmannii, USA, Utah, Zion National Park
RH065, engelmannii, USA, California, Anza Borrego
RH123, engelmannii, USA, Arizona, Vail
RH036, enneacanthus, USA, Texas, Sanderson
RH041, enneacanthus, USA, Texas, Big Bend
RH059, fendleri, USA, Arizona, Grand Canyon National Park
RH104, fendleri rectispinus, USA, New Mexico, H6
RH109, fendleri rectispinus, USA, New Mexico, Hillsboro
RH116, fendleri rectispinus, USA, New Mexico, Hachita
RH117, pectinatus, USA, Arizona, Animas
RH121, pectinatus, USA, Arizona, Bisbee
RH107, polyacanthus neomexicanus, USA, New Mexico, Hillsboro
RH040, stramineus, USA, Texas, Big Bend
RH051, triglochidiatus, USA, Colorado, Colorado National Monument
RH070, triglochidiatus, USA, Arizona, Little Colorado
RH082, triglochidiatus, USA, Utah, Natural Briges
RH094, triglochidiatus, USA, New Mexico, Aztek
RH099, viridiflorus, USA, New Mexico, Madrid
RH046, viridiflorus cylindricus, USA, Texas, Jeff Davis County
RH096, viridiflorus minor, USA, New Mexico, Los Alamos
RH119, waldeisii, Mexico, Tamaulipas, Tula