Eulychnia vallenarensis
- Holotype: Chile: Region of Atacama, 20 km south of Vallenar, Panamericana Road km 645, 28.71338°S, 70.76097°W, 741 m. a. s. l., Guerrero 1258 (CONC185660)
- 1. Guerrero, P.C. & Walter, H.E. 2019: Nomenclatural novelties and a new species in Chilean Cactaceae. – Phytotaxa 392(1): 89-92. http://doi.org/10.11646/phytotaxa.392.1.11