Eulychnia ritteri is endemic to Peru, restricted to the northern coast of the department of Arequipa. The lack of knowledge of this species, and threats such as human activities and climate change, put the populations at risk. In this research, we examined the geographical distribution and conservation status of E. ritteri in the coastal area of the Caravelí province. In addition, the population structure and phenology in the Quebrada Vizcachani population were evaluated using plots of 10x100 m. Data on the accompanying flora and local fauna were also obtained. Eulychnia ritteri showed five populations distributed from 15°43’ to 15°47’S, with a total area of 63.62 ha (0.63 km2). The Quebrada Vizcachani population is the largest (24.5 ha) and the Cementerio population the smallest (0.018 ha). The population density evaluated is 0.06 ind/m2, where seedlings, juveniles, adults, and d...

Scientific collections and herbaria are essential sources of information and education for researchers and practitioners in biological sciences. The Herbarium Areqvipense (HUSA), registered at Index Herbariorum since 2004, holds one of the most important collections in Peru. In this paper we provide information about the collection, and its representativeness for the Peruvian flora. HUSA has more than 11000 specimens recorded to date, with more than 2300 determined species, consisting mostly of Magnoliophyta and Pteridophyta (ca. 98%), and a smaller proportion of Basidiomycetes, Ascomycetes (fungi and lichens) and Bryophyta (mosses). The collection includes specimens from 23 departments of Peru, where the samples belonging to Arequipa have the largest number of individuals collected (3375) accounting for 31% of the collection. Asteraceae and Solanaceae are the most collected with 1571 an...

Scientific collections and herbaria are essential sources of information and education for researchers and practitioners in biological sciences. The Herbarium Areqvipense (HUSA), registered at Index Herbariorum since 2004, holds one of the most important collections in Peru. In this paper we provide information about the collection, and its representativeness for the Peruvian flora. HUSA has more than 11000 specimens recorded to date, with more than 2300 determined species, consisting mostly of Magnoliophyta and Pteridophyta (ca. 98%), and a smaller proportion of Basidiomycetes, Ascomycetes (fungi and lichens) and Bryophyta (mosses). The collection includes specimens from 23 departments of Peru, where the samples belonging to Arequipa have the largest number of individuals collected (3375) accounting for 31% of the collection. Asteraceae and Solanaceae are the most collected with 1571 an...

Cactaceae es una familia americana muy diversa en los Andes occidentales, no obstante, aún su diversidad y distribución no es precisa, es necesario realizar inventarios exhaustivos de especies en localidades potencialmente biodiversas. Es por ello que, esta investigación busca determinar la diversidad y distribución de Cactaceae en el Valle de Cháparra. Se realizaron visitas de campo desde el año 2015 al 2019, abarcando toda la extensión del valle (zona de costa, valle y zona alta), desde 100 hasta 3500 m; se realizaron búsquedas intensivas, con recolecciones botánicas, se tomaron datos geográficos (coordenadas, altitud), fotografías y los taxones fueron determinados con bibliografía especializada. Se registra un total de 23 taxones, siendo 18 endémicos de Perú y dos exclusivos de Arequipa, en cuanto a la distribución, Cactaceae se presenta desde 170 hasta >3000 m, en l...

Cactaceae es una familia americana muy diversa en los Andes occidentales, no obstante, aún su diversidad y distribución no es precisa, es necesario realizar inventarios exhaustivos de especies en localidades potencialmente biodiversas. Es por ello que, esta investigación busca determinar la diversidad y distribución de Cactaceae en el Valle de Cháparra. Se realizaron visitas de campo desde el año 2015 al 2019, abarcando toda la extensión del valle (zona de costa, valle y zona alta), desde 100 hasta 3500 m; se realizaron búsquedas intensivas, con recolecciones botánicas, se tomaron datos geográficos (coordenadas, altitud), fotografías y los taxones fueron determinados con bibliografía especializada. Se registra un total de 23 taxones, siendo 18 endémicos de Perú y dos exclusivos de Arequipa, en cuanto a la distribución, Cactaceae se presenta desde 170 hasta >3000 m, en l...