A5012831460- Plant Diversity and Evolution
- Botanical Research and Applications
- Botany, Ecology, and Taxonomy Studies
- Plant and animal studies
- Plant and Fungal Species Descriptions
- Scarabaeidae Beetle Taxonomy and Biogeography
- Mediterranean and Iberian flora and fauna
- Ecology and Vegetation Dynamics Studies
- Plant Parasitism and Resistance
- Plant Taxonomy and Phylogenetics
- Fern and Epiphyte Biology
- Mycorrhizal Fungi and Plant Interactions
- Botanical Research and Chemistry
- Plant and soil sciences
- Ethnobotanical and Medicinal Plants Studies
- Chemical synthesis and alkaloids
- Botany and Geology in Latin America and Caribbean
- Plant Water Relations and Carbon Dynamics
- Plant responses to elevated CO2
- Rural Development and Agriculture
- Tree-ring climate responses
- Agricultural and Food Sciences
- Moringa oleifera research and applications
- Lepidoptera: Biology and Taxonomy
- Phytochemistry and Bioactive Compounds
Universidad Nacional Autónoma de México
2015-2024
United States Postal Service
2023
Planta
2023
Universidad Autónoma de la Ciudad de México
2023
Universidad Autónoma Monterrey
2022
Missouri Botanical Garden
2007
Large clades of angiosperms are often characterized by diverse interactions with pollinators, but how these pollination systems structured phylogenetically and biogeographically is still uncertain for most families. Apocynaceae a clade >5300 species worldwide distribution. A database representing >10 % in the family was used to explore diversity pollinators evolutionary shifts across major regions. The compiled from published unpublished reports. Plants were categorized into broad then...
Antecedentes y Objetivos: La subtribu Gonolobinae es una de las más diversas la familia Apocynaceae su historia taxonómica sigue pasando por numerosos cambios. Dentro subtribu, Matelea, el género en cual se reconocieron hasta 200 especies que ha cambiado circunscripción, ya recobrado como parafilético filogenias. En presente trabajo propone reconocer un nuevo incluye a Matelea congesta. Asimismo, discute sobre relación con los taxones filogenéticamente emparentados. Además, presenta...
Convergent evolution is invoked to explain similarity between unrelated organisms in similar environments, but most evaluations of convergence analyse organismal attributes rather than the environment. This study focuses on globular succulent plants Americas, cacti, and their counterparts Africa ice-plant, spurge milkweed families. Though often held up as paragons convergent morphological evolution, environmental these has remained largely unexamined from a quantitative perspective.
Antecedentes: En la revisión de Gonolobus para México se observó que G. fuscus, luridus y tingens carecen los apéndices estaminales anillo faucal típicos del género. Los ejemplares observados estas especies tienen tricomas glandulares tornándose cristalinos blancos con edad corona ginostegial doble característicos Polystemma, por lo propone su transferencia a este Preguntas: ¿Los datos morfológicos apoyan las aquí estudiadas Polystemma? ¿Las plantas son coespecíficas alguna conocidas...
Background and Aims: Recent studies have focused on resolving the systematics of tribe Gonolobinae family Apocynaceae, as well controversial genus Matelea s.l. However, many species within not been evaluated phylogenetically. This is case M. gonoloboides, previously recognized type Urostephanus, other taxa with similar floral morphology. The aim this study to test monophyly including some morphology gonoloboides. Furthermore, we evaluate taxonomic position Urostephanus clade subtribe compare...
Background: Polystemma is characterized by a mixed indumentum of glandular trichomes that turn white, rotate to rotate-campanulate corollas, gynostegial corona with filiform appendages, and fusiform follicles. The taxon has undergone numerous taxonomic changes in recent years. In current phylogenies, been recovered as paraphyletic many its species require new combination. this study, we propose the corresponding describe, map, illustrate three within genus. Questions: Do morphological data...
APOCYNACEAE S.L. IS AMONG THE 15 MOST DIVERSE FAMILIES IN MEXICO, WITH A TOTAL OF 385 SPECIES, DISTRIBUTED 50 GENERA AND 3 SUBFAMILIES WHICH ASCLEPIADOIDEAE NUMBERS GENERA, SPECIES ENDEMICS. NATIVE ENDEMICS ARE ASCLEPIAS MATELEA. RICHEST STATES TERMS TAXON DIVERSITY THOSE AT PACIFIC ATLANTIC SLOPES, CHIAPAS, OAXACA, GUERRERO VERACRUZ BEING PROMINENT. TROPICAL DECIDUOUS FOREST ARID SCRUB IMPORTANT VEGETATION TYPES BY THEIR NUMBER 176 ENDEMIC TO MEXICO. LIST RECORDED MEXICO PROVIDED,...
Antecedentes: La familia Apocynaceae está entre las 13 más diversas de México y su conocimiento taxonómico ha tenido una atención creciente con la implementación filogenias otras herramientas para resolver sistemática. Con 10 años del último listado enfocado en familia, resulta necesario actualizar el sistemático grupo. Pregunta: ¿Cómo se consolidado hasta nuestros días grupo México? cambiado número géneros especies país distribución geográfica por estado? Especie estudio: Sitio Método:...
Background: Mexico is a megadiverse country with an elevated diversity of species vascular plants. A comprehensive Flora that includes all the plants distributed in does not yet exist. Electronic Floras have demonstrated value compendium based on existing knowledge and published Floras, checklists revisions. Questions: What best approach for publishing Mexico? resources are needed to create this Flora? current status these resources? Objective: The objective paper summarize evaluate...
We describe a new species of Polystemma endemic to Oaxaca, Mexico. leopardum is similar P. cordatum but differs in the shape corolla lobes, flower color pattern, gynostegial corona and stylar head, as well its specialized habitat. discuss morphology provide illustrations distribution map. propose conservation status Endangered under criteria IUCN. This discovery increases diversity genus country ten species.
A parsimony cladistic analysis based on 55 morphological characters was performed for the Cascabela Raf.–Thevetia L. species complex (Apocynaceae), including 22 terminals, sampling at least one of each genus in Plumerieae sensu Endress and Bruyns. The consensus 12 most parsimonious trees (length = 164, consistency index 0.50, retention 0.75) can be correlated to three previous subtribal classifications. topology supports monophyly Cascabela–Thevetia complex, but it is not conclusive whether...
PREMISE OF THE STUDY: Is there an association between bioclimatic variables and genetic variation within species? This question can be approached by a detailed analysis of population genetics parameters along environmental gradients in recently originated species (so drift does not further obscure the patterns). The genus Agave , with more than 200 recent encompassing diversity morphologies distributional patterns, is adequate system for such analyses. We studied striata widely distributed...
Premise of research. Variation in average xylem vessel diameter across species has important functional consequences, but the causes this variation remain unclear. Average is known to scale with stem size within and species. Vessel also seems differ between clades environments, dryland plants having narrower, more cavitation-resistant vessels. As a result, it not clear what extent phylogenetic affinity environment are associated differences diameter–stem relationship.Methodology. With linear...
Originario de la India, el «árbol milagro» Moringa oleifera lleva ya varios siglos como parte horticultura tradicional del trópico seco mexicano, donde se cultiva principalmente para fines ornamentales. Con reconocimiento reciente sus propiedades nutritivas, farmacocinéticas e industriales, existe un creciente interés en fomentar su cultivo México. base una recopilación registros herbario y observaciones campo, utilizan herramientas modelado distribución potencial (con programa MaxEnt)...
Antecedentes y Objetivos: Gonolobus comprende alrededor de 150 especies en el mundo, con poco más 40 ellas distribuidas México. En los últimos dos años se han descrito al menos cinco nuevas este país. presente trabajo describe una nueva especie dentro del subgénero Pseudolachnostoma. Métodos: Se revisaron 13 herbarios, tres bases datos digitales literatura especializada. Con base esto compararon las similares generó clave identificación. realizaron expediciones a campo 2019 2022 colectó...
In this study a new species of Gonolobus, G. villasenorii, is described. It endemic to Sinaloa, Mexico, distributed in the Sierra Madre Occidental pine–oak forest. This characterized by presence lanceolate sepals, margin corolla lobes with whitish-green callus, without being cristate, and anthers rectangular dorsal appendages. The compared Gonolobus chloranthus erianthus. grandiflorus, incerianus, lozadae are which it shares reticulate corollas flowers more than 2 cm diameter. A detailed...
Antecedentes y Objetivos: La subtribu Gonolobinae es una de las más diversas la familia Apocynaceae su historia taxonómica sigue pasando por numerosos cambios. Matelea uno los géneros dentro que cambios ha presentado del cual se han segregado taxones, entre ellos Microstelma monotípico. El objetivo este trabajo presentar un tratamiento actualizado descripción dos especies nuevas, así como proporcionar clave identificación, imágenes descripciones sus especies. Métodos: Se realizaron salidas...
El género Bdallophytum está integrado por plantas parásitas de raíces y restringe su distribución a la parte septentrional del neotrópico. En México se presentan todas sus especies, dos las cuales son endémicas. Anteriormente le ubicaba en tribu Cytineae familia Rafflesiaceae, pero según los estudios filogenéticos basados datos moleculares, este grupo reconoce ahora nivel como Cytinaceae. historia han reconocido para uno cuatro componentes última revisión taxonómica el fue realizada hace más...
A new species of Gonolobus from northwestern Mexico with green and barbate corollas is described here. naturalistae morphologically similar to G. barbatus, pectinatus, sororius but differs in corolla corona morphology distribution. Descriptions, illustrations, morphological comparisons, geographic distribution maps these species, as well their conservation status, are provided. This discovery highlights a center diversity for the genus, around 40 recorded, its endemism, 48.7% occurring country.
Two new species of Spigelia (Loganiaceae) from the states Guerrero and Estado de Mexico are described here. This represents a case convergence with native to South America, nicotianiiflora. With this addition, reaches total 22 genus, which more than 50% endemic or microendemic. places country as second highest area diversity after Brazil. A map distribution in dichotomous key for white corollas included.