Ricardo Callejas- University of Antioquia
Ricardo Callejas
- University of Antioquia
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Publications (33)
Enckea es uno de los clados con distribución neotropical del género Piper (L.), compuesto por aproximadamente 80 especies que generalmente exhiben hábitos de crecimiento arbóreo, arbustivo, herbáceo y lianescente. Dicho clado es el único al interior de Piper que se distribuye en su mayoría en zonas de bosque seco tropical (BST), con un reducido núm...
We recorded in a tropical dry forest in the northeast of Colombia (Cesar Dept.) 12 species of macrofungi
previously unknown for the country; Amanita aureofloccosa, A. crebresulcata (Amanitaceae), Daedalea
flavida (Fomitopsidaceae), Ganoderma resinaceum (Ganodermataceae), Marasmius cohortalis
(Marasmiaceae), Phellinus merrilli, P. aff. umbrinellus (...
Ethnopharmacological relevance:
A previous pilot ethnobotanical and ethnopharmacological study with the Q'echi׳ Maya identified the family Piperaceae, as an important taxonomic group traditionally used for the treatment of epileptic and culture-bound anxiety disorders and possessing activity in the GABA system. Following that lead, a botanical sur...
Carbon-centric conservation strategies such as the United Nation's program to Reduce CO2 Emissions from Deforestation and Degradation (REDD+), are expected to simultaneously reduce net global CO2 emissions and mitigate species extinctions in regions with high endemism and diversity, such as the Tropical Andes Biodiversity Hotspot. Using data from t...
The monospecific fern genus Nephopteris has previously been collected in three subparamos of Colombia, one in the Western Cordillera, and two in the Eastern Cordillera. Only five collections are available, the most recent having been made in 1973. The genus was thought to be extinct because the three subparamos where it has been found have undergon...
Enckea is a clade of Piper (L.) with Neotropical distribution; it has approximately 80 species that generally show arboreal, arbustive, herbaceous, and lianescent growth habits. This clade is the only one in Piper with species living in tropical dry forests (TDF) and tropical wet forests (TWF) of Central and South America. Despite the unique distri...
We performed a panbiogeographic analysis of the species of Piper that belong to the clade Enckea, aiming to establish a primary biogeographic homology hypothesis among Seasonal Dry Neotropical Forest (SDNF) areas of the Antilles, Central, and South America. We used 904 distribution records of 74 species to generate 50 individual tracks, 8 generaliz...
El Catálogo es el resultado de un acuerdo de colaboración entre el Missouri Botanical Garden en Saint Louis, MO, USA y la Universidad de Antioquia en Medellín, Colombia, y de la contribución de más de 70 botánicos a nivel mundial. El principal objetivo del proyecto fue sintetizar información referente a las plantas vasculares del Departamento. La v...
Peperomia subgenus Tildenia is a poorly known group of geophytic species occuring in seasonal habitats in 2 biodiversity hot spots (Mexico-Guatemala and Peru-Bolivia) with few species reported from the countries in between. Recent fieldwork combined with detailed study of herbarium specimens of this subgenus in Mexico and Central America resulted i...
Peperomia subgenus Tildenia is a poorly known group of geophytic species occurring in seasonal habitats in 2 biodiversity hot spots (Mexico-Guatemala and Peru-Bolivia) with few species reported from the countries in between. Recent fieldwork combined with detailed study of herbarium specimens of this subgenus in Mexico and Central America resulted...
Manekia Trelease se reconoce como un nombre más antiguo para Sarcorhachis Trelease (Piperaceae). Después de examinar material de herbario, incluyendo especímenes tipo apropiados, es evidente que Manekia y Sarcorhachis son sinónimos taxonómicos. Se incluyen nuevas combinaciones para cuatro especies de Manekia originalmente descritas como Sarcorhachi...
Piper is one of the largest genera of flowering plants. The uniformity of its small flowers and the vast number of species in the genus has hindered the development of a stable infrageneric classification. We sampled 575 accessions corresponding to 332 species of Piper for the ITS region and 181 accessions for the psbJ-petA chloroplast intron to fu...
Aim The study aimed to establish areas of endemism and distribution patterns for Neotropical species of the genus Piper in the Neotropical and Andean regions by means of parsimony analysis of endemicity (PAE) and track-compatibility analysis.
Location The study area includes the Neotropical region and the Northern Andean region (Páramo-Punan subreg...
In this annotated checklist, 111 names of taxa of Peperomia Ruiz & Pav. (Piperaceae) are placed into synonymies, 26 former synonymized names are re-established, and 10 existing synonyms are transferred and placed under a different accepted name of taxon. In addition, 43 lectotypes are designated. Appropriate nomenclatural as well as taxonomic justi...
Three new species of Piper from the Guianas and adjacent areas are described: Piper aulacospermum Callejas, P. ciliomarginatum Görts & Christenh. and P. remotinervium Görts. The differences between P. aulacospermum and P. bartlingianum (Miq.) C.DC., both belonging to subg. Ottonia, are given as well as notes on all three species.
Epiphytism in Colombian Amazonia was described by counting vascular epiphytes in thirty 0.025-ha (5 50m) plots, well-distributed over the main landscape units in the middle Caquet area of Colombian Amazonia. Each plot was directly adjacent to a 0.1-ha plot at which the species composition of trees and lianas (diameter at breast height (DBH)2.5cm) h...
The genus Trianaeopiper Trealese was described to have axillary inflorescences, a rare character within Piperaceae. Here we present phylogenetic evidence suggesting that Trianaeopiper is not monophyletic and should not be recognized as a distinct genus (new names and combinations are provided). The structure interpreted as an axillary inflorescence...
The discovery of Bromeliophila helenae Gradst. (Marchantiophyta, Lejeuneaceae) in the northern Andes of Colombia. We report the discovery in Colombia of the rare liverwort Bromeliophila helenae Gradst., a species previously known from only two localities, one in the Guayana Highland of Venezuela and the other in the Lesser Antilles (Dominica). The...
Piper is one of the most diverse genera among the basal lineages of angiosperms, and one of the most diverse genera in tropical wet forests around the world. Piper species are shrubs, climbers, and herbs abundant in the understory of tropical wet forests. Ecologically, Piper species are important structural components of the forest understory, espe...
Se evaluó la actividad insecticida de los extractos de n-Hexano (raíces y tallos) y de EtOAc (raíces y hojas) de la especie Piper grande Vahl, sobre el ciclo de vida del modelo biológico Drosophila melanogaster. Los estados larvarios presentaron una actividad significativa reflejada en la reducción de las poblaciones de pupas respecto al control. N...
Bacillus thuringiensis is found naturally on the phylloplane. In this study 35 samples from 13 species of the genus Piper (Piperaceae) were collected from three altitudinal levels located between 1800 and 2900 m above sea level in the Colombian Andean forest of Central Cordillera. Two hundred and fifty-six isolates of B. thuringiensis were obtained...
Se presenta la descripción e ilustración de tres especies nuevas de la familia Piperaceae, Peperomia alwynii, Piper curvinervium y Piper dolichostylum, las cuales crecen hacia el sur de la región andina colombiana; así mismo se discuten para cada especie sus relaciones de parentesco, distribución geográfica, ecología y hábitat. /// Three new specie...
Three new species of Piperaceae, Peperomia alwynii, Piper curvinervium, and Piper dolichostylum, from the southern Andes region of Colombia, are described and illustrated, and their relationships, geographical distribution, habitat, and ecology are discussed.
Four species are recognized, and the first records for the Central Corillera of Colombia are presented. Two new species, P. ochroleuca and P. roldanii, are described, illustrated and their relationships, ecology and geographical distribution discussed.
Five hundred sixty-one type specimens, representing 522 basionyms, of Piperaceae have been verified among the specimens of
Piperaceae acquired by the New York Botanical Garden (NY) in the purchase of the Truman G. Yuncker Herbarium of DePauw University
(DPU) in 1987. Included are types of 319 names published by T. G. Yuncker, as well as smaller num...
"A dissertation submitted to the Graduate Faculty in Biology ... " Thesis (Ph. D.) -- City University of New York, 1986. Includes bibliographical references (leaves 408-416).
Palabras Clave: Musci, musgos, Antioquia, Lista de chequeo l listado de los musgos de Antioquia, que aquí se presenta, es el resultado de investigaciones de muy diver-sa índole, de hecho y desde el siglo XIX se conocen traba-jos briológicos en Suramérica que incluyen parcialmente al país (Colombia) y/o al departamento (Antioquia) o sus cercanías (M...
