Se estudió la distribución y estado de conservación del género Haageocereus en el Departamento de Lima (Perú). Las plantas fueron recolectadas en 12 localidades ubicadas en las provincias de Canta, Huaral, Huaura, Huarochirí, Lima y Oyón, entre los 180 y 2500 msnm. El número de taxa evaluados fue un total de 12: 4 especies, 6 subespecies y 2 híbridos además de 2 formas, encontrándose en las siguientes categorías de conservación: Vulnerable (3), En Peligro (5) y En Peligro Crítico (6). La especie con menor distribución fue H. tenuis (Ritter) Rauh & Ostolaza, la cual, por la alta vulnerabilidad de su único hábitat se ha incluido en la categoría de “En Peligro Crítico”, mientras que la especie con mayor distribución fue H. acranthus (Vaupel) Backeberg, incluida en la categoría de “Vulnerable”. Las localidades más seriamente perturbadas son Cajamarq...

Austrocylindropuntia pachypus (K.Schum.) Backeb. it is an endemic cactus whose distribution was restricted to the western slopes of La Libertad, Ancash, Lima; and based on botanical expeditions through the Andean foothills of Ica, new records are reported with reduced populations of A. pachypus, which makes it possible to extend its known distribution to southern Peru by more than 260 km; in addition, based on 35 georeferenced records, information is presented on their locations, populations, potential distribution, habitats, threats, and the conservation status was analyzed. The potential distribution model shows high predictive or suitability levels with AUC values = 0.96 based on seven climatic variables (Bio17, Bio2 and Bio7 being the ones with the greatest contribution), with the departments with the highest suitability values being: Lima, Ancash, Lambayeque, La Libertad, Huancaveli...

Neoraimondia arequipensis subsp. gigantea is registered in the dry forests of Tumbes, expanding its geographical distribution in northern Peru, based on the phenotypic identification of 70 individuals and genotypic by sequencing the matK gene (Maturase K gene). The habitat of this species is characterized by the presence of stony and rocky soil, located adjacent to areas of ravines and altitudes between 20 to 60 meters above sea level. In addition, we include the record of biological interactions of this cactus with endemic fauna and flora of the department of Tumbes.

Neoraimondia arequipensis subsp. gigantea is registered in the dry forests of Tumbes, expanding its geographical distribution in northern Peru, based on the phenotypic identification of 70 individuals and genotypic by sequencing the matK gene (Maturase K gene). The habitat of this species is characterized by the presence of stony and rocky soil, located adjacent to areas of ravines and altitudes between 20 to 60 meters above sea level. In addition, we include the record of biological interactions of this cactus with endemic fauna and flora of the department of Tumbes.