Cactus and Succulent Journal
Artikel in Cactus and Succulent Journal, The Journal of the Cactus and Succulent Society of America, 2016, Volume 88, No. 3, Seite 122-130 Forms of fendleri Autor: Elton Roberts
Artikel in Cactus and Succulent Journal, The Journal of the Cactus and Succulent Society of America, 2016, Volume 88, No. 3, Seite 122-130 Forms of fendleri Autor: Elton Roberts
Artikel in Cactus and Succulent Journal, The Journal of the Cactus and Succulent Society of America, 2016, Volume 88, No. 1, Seite 23-29 Hiking & Cacti – In search of Echinocereus chloranthus subsp. rhyolithensis in the Cookes Mountains, New Mexico Autor: Gerhard & Gisela Böhm
Artikel in Cactus and Succulent Journal, The Journal of the Cactus and Succulent Society of America, 2015, Volume 87, No. 1, Seite 15-20 Echinocereus russanthus ssp. weedinii from the Davis Mountains, Texas Autor: Gerhard & Gisela Böhm