Echinocereus bristolii
Echinocereus bristolii in Cact. Succ. J. (Los Angeles) 9: 160. 1938 sec. Sánchez & al. 20181 wfo-0000661177
- ≡Echinocereus pectinatus var. bristolii in Saguaroland Bull. 10: 81. 1956 syn. sec. Guzmán Cruz & al. 20032 wfo-0000661399
- 1. Sánchez, D., Arias, S., Grego-Valencia, D. & Terrazas, T. 2018: Phylogeny in Echinocereus (Cactaceae) based on combined morphological and molecular evidence: taxonomic implications. – Systematics and Biodiversity 16: 28-44. https://doi.org/10.1080/14772000.2017.1343260, 2. Guzmán Cruz, L. U., Arias, S. & Dávila, P. 2003: Catálogo de Cactáceas Mexicanas. – Mexico, D. F.: Universidad National Autónoma de México & CONABIO.