Javier EcheverrÃaNarel Y. Paniagua-ZambranaRainer W. Bussmann2026-03-222026-03-22202010.1007/978-3-030-28933-1_211https://doi.org/10.1007/978-3-030-28933-1_211https://andeanlibrary.org/handle/123456789/82542esEx parteRitter reactionHumanitiesOreocereus leucotrichus (Phil.) Wagenkn. ex F. Ritter Cactaceaebook-chapter