Results 31 to 40 of about 209 (128)

Ceratozamia schiblii (Zamiaceae): A New Cycad Species from the Eastern Mountains of Oaxaca, Mexico

Taxonomy, 2022
Ceratozamia schiblii (Zamiaceae), a new species endemic to the highlands of eastern Oaxaca, Mexico, is described. The new species is part of the C. robusta species complex, which is a group of closely related species with very similar morphology.
Miguel Angel Pérez-Farrera, José Said Gutiérrez-Ortega, Timothy J. Gregory, Jeffrey Chemnick, Silvia Salas-Morales, Michael Calonje, Pedro Díaz-Jiménez   +6 more
doaj   +1 more source

Discovery of Cyanobacteria Associated with Cycads and Description of Three Novel Species in Desmonostoc (Nostocaceae)

Diversity, 2023
Heterocyte-forming cyanobacteria form symbiotic relationships with several lineages of plants. Here, twenty (20) strains of endosymbiotic cyanobacteria (cyanobionts) with Nostoc-like morphologies were isolated from the highly specialized coralloid roots ...
Melissa H. Pecundo, Tao Chen, Thomas Edison E. dela Cruz, M. Patrick Griffith, Zhangli Hu, Huirong Chen, Nan Li   +6 more
doaj   +1 more source

The Seedling of Ceratozamia [PDF]

Botanical Gazette, 1908
"Reprinted from the Botanical Gazette, Vol. XLVI, No. 3 [Sept. 1908], pp. 203-220." ; Includes bibliographical references. ; Mode of access: Internet.
openaire   +1 more source

Molecular and Morphological Phylogenetic Analyses of New World Cycad Beetles: What They Reveal about Cycad Evolution in the New World

Diversity, 2018
Two major lineages of beetles inhabit cycad cones in the New World: weevils (Curculionoidea) in the subtribe Allocorynina, including the genera Notorhopalotria Tang and O’Brien, Parallocorynus Voss, Protocorynus O’Brien and Tang and ...
William Tang, Guang Xu, Charles W. O’Brien, Michael Calonje, Nico M. Franz, M. Andrew Johnston, Alberto Taylor, Andrew P. Vovides, Miguel Angel Pérez-Farrera, Silvia H. Salas-Morales, Julio C. Lazcano-Lara, Paul Skelley, Cristina Lopez-Gallego, Anders Lindström, Stephen Rich   +14 more
doaj   +1 more source

Ceratozamia chinantlensis (Zamiaceae): A New Cycad Species from La Chinantla, Oaxaca, Mexico

Taxonomy
Ceratozamia chinantlensis sp. nov., a new cliff-dwelling cycad species from Sierra de La Chinantla, Oaxaca, Mexico, is described and compared with its congeners.
Miguel Angel Pérez-Farrera, Steven M. Ramirez-Oviedo, Mauricio Gerónimo Martínez-Martínez, Gaspar Moreno Mendez, Ana Guadalupe Rocha Loredo, José Said Gutiérrez-Ortega   +5 more
doaj   +1 more source

Biodiversidad de Zamiaceae en México

Revista Mexicana de Biodiversidad, 2013
Dentro de los grupos actuales de espermatofitas, plantas con semilla, las cícadas cuentan con el registro fósil más antiguo. A pesar de ello, su estatus como “fósiles vivientes” ha sido puesto en entredicho recientemente con base en resultados de ...
Fernando Nicolalde-Morejon, Jorge González-Astorga, Francisco Vergara-Silva, Dennis W. Stevenson, Octavio Rojas-Soto, Anwar Medina-Villarreal   +5 more
doaj   +1 more source

Listado florístico del Cerro Quetzal (Polígono III ) de la Reserva de la Biosfera El Triunfo, Chiapas, México

Botan‪ical Sciences, 2012
Se realizó un listado florístico para el Cerro Quetzal (Polígono III) y zonas adyacentes de la Reserva de la Biosfera El Triunfo, Chiapas, México. Se integró una base de datos con 1,513 registros, incluye 140 familias, 432 géneros, 795 especies y 24 ...
Miguel Ángel Pérez-Farrera, Rubén Martínez-Camilo, Nayely Martínez-Meléndez, Oscar Farrera-Sarmiento, Susana Maza-Villalobos   +4 more
doaj   +1 more source

Integrative taxonomy of the Ceratozamia mexicana Brongn. (Zamiaceae) species complex from a phylogeographic perspective

Plant Species Biology, Volume 40, Issue 6, Page 530-546, November 2025.
Recent research has ignited a renewed interest in Ceratozamia cycads, unveiling their remarkable diversity. While previous studies primarily focused on morphology, this investigation employs a multidisciplinary approach, integrating phylogenetics, morphology, and ecological niches. Our methods identify seven distinct lineages as separate species.
Anwar Medina‐Villarreal, Jorge González‐Astorga, Alejandro Espinosa de los Monteros   +2 more
wiley   +1 more source

Conservación de los recursos fitogenéticos: uso inteligente de la biodiversidad

Revista Biológico Agropecuaria Tuxpan, 2018
Los recursos fitogenéticos están representados por toda la variedad y combinaciones posibles de rasgos que permiten a las especies vegetales adaptarse a los cambios en el medio; a mayor cantidad de rasgos y combinaciones, mayor es la probabilidad de que
Pablo Octavio Aguilar, Mario Adolfo García Montes, Dulce María Galván Hernández, Manuel Alejandro Macedo Villareal, Arturo S´ánchez González   +4 more
doaj   +1 more source

Spatial distribution pattern of the endangered endemic cycad Ceratozamia fuscoviridis (Zamiaceae) in central Mexico

Plant Species Biology, Volume 40, Issue 6, Page 572-583, November 2025.
Spatial distribution pattern were studied for Ceratozamia fuscoviridis, an endangered species in Mexico, based on Ripley's K t and K 12 analysis. Clumped spatial distribution patters was found in individuals of all populations, suggesting low interaction with predators/dispersers and/or evidence of suitable microsites for cycads.
María Teresa Pulido Silva, Juan Carlos Flores‐Vázquez, Maricela Vargas‐Zenteno, Aurelia Vite Reyes, Andrew P. Vovides   +4 more
wiley   +1 more source