Results 11 to 20 of about 2,473 (201)

Ethnobotany of Mexican and northern Central American cycads (Zamiaceae)

Journal of Ethnobiology and Ethnomedicine, 2019
Background This study documents cycad-human relationships in Mexico, Belize, Guatemala, El Salvador, and Honduras over the last 6000 years. The impetus was acute need for a better understanding of previously undocumented uses of cycads in this region ...
Mark Bonta, María Teresa Pulido-Silva, Teresa Diego-Vargas, Aurelia Vite-Reyes, Andrew P. Vovides, Angélica Cibrián-Jaramillo   +5 more
doaj   +2 more sources

Chemical Ecology of Symbioses in Cycads, an Ancient Plant Lineage [PDF]

New Phytologist
Cycads are an ancient lineage of gymnosperms that maintain a plethora of symbiotic associationsfrom across the tree of life. They have myriad morphological, structural, physiological, chemical,and behavioral adaptations that position them as a unique ...
Shayla Salzman, Adriel M Sierra, Juan Carlos Villarreal Aguilar   +2 more
exaly   +4 more sources

Cycads from the Triassic of Antarctica: Permineralized Cycad Leaves [PDF]

International Journal of Plant Sciences, 2007
Permineralized cycad petioles and/or rachides with associated pinnae are described from two Triassic localities in the Queen Alexandria Range, central Transantarctic Mountains, Antarctica. Petiole‐rachides display an inverted‐omega‐shaped arrangement of vascular bundles typical of most genera of extant Cycadales and exarch primary xylem that link them ...
Hermsen, Elizabeth, Taylor, Thomas N., Taylor, Edith L., Stevenson, Dennis W.   +3 more
openaire   +4 more sources

The Cycads [PDF]

Rangeland Ecology & Management, 2004
Book Review: The Cycads, Loran M. Whitelock, Timber Press, Portland, Oregon (2002).The Journal of Range Management archives are made available by the Society for Range Management and the University of Arizona Libraries.
David L. Scarnecchia, Loran M. Whitelock
core   +3 more sources

Safeguarding China’s threatened cycads: Strategies to combat alarming habitat degradation and anthropogenic collection pressure [PDF]

Nature Conservation
Cycads (Cycas L.) are ancient plants of immense ecological and evolutionary significance, yet they now face escalating threats to their survival. Around 20 cycad species remain in China, beset with highly restricted distributions and small, fragmented ...
Chunping Xie, C. Y. Jim
doaj   +4 more sources

Pre- and Postemergence Herbicides for Use Around Palms and Cycads

EDIS, 2007
ENH-1070, a 9-page fact sheet by Robert H. Stamps, Jeffrey G. Norcini, Timothy K. Broschat, and Charles W. Meister, lists herbicides for use in nurseries to reduce weed management costs in nurseries and maintenance costs in landscapes.
Robert H. Stamps, Jeffrey G. Norcini, Timothy K. Broschat, Charles W. Meister   +3 more
doaj   +2 more sources

Conserved symbiosis-associated genes in the cycad Encephalartos natalensis suggest co-option for cyanobacterial symbiosis. [PDF]

New Phytol
The heterocyst‐rich Encephalartos natalensis cyanobacterial zone in coralloid root suggests co‐option of conserved symbiosis‐associated genes. This figure was created in BioRender (BioRender.com/https://BioRender.com/n3qveqc). Summary Plant‐cyanobacterial symbioses have evolved independently at least four times across land plants, yet their underlying ...
Schoeman C, Roodt D, Mc Menamin A, Bezuidt O, Dithugoe C, Pinard D, Mizrachi E.   +6 more
europepmc   +2 more sources

Ceratozamia dominguezii (Zamiaceae): A New Cycad Species from Southeastern Mexico

Taxonomy, 2021
Ceratozamia dominguezii (Zamiaceae), a new species endemic to the lowland karstic tropical rainforests of southeastern Veracruz, Mexico, is described. The new species is part of the C.
Miguel Angel Pérez-Farrera, José Said Gutiérrez-Ortega, Andrew P. Vovides, Michael Calonje, Pedro Díaz-Jiménez   +4 more
doaj   +1 more source

Thermogenesis-derived spatiotemporal microclimates guide pollinator movement to ensure pollination. [PDF]

J Integr Plant Biol
Alocasia odora's microclimatic heterogeneity guides Colocasiomyia fly movement within its inflorescence. During the female stage, midday heat in the upper spadix pushes flies down to the cooler female zone. During the male stage, nocturnal warmth in the upper part pulls flies upward and spathe constriction closes the lower female chamber.
Yu Y, Luo Y, Zhang W, Ding X, Song X, Luo Y.   +5 more
europepmc   +2 more sources

Speciation along a latitudinal gradient: The origin of the Neotropical cycad sister pair Dioon sonorense–D. vovidesii (Zamiaceae)

Ecology and Evolution, 2021
Latitude is correlated with environmental components that determine the distribution of biodiversity. In combination with geographic factors, latitude‐associated environmental variables are expected to influence speciation, but empirical evidence on how ...
José Said Gutiérrez‐Ortega, Francisco Molina‐Freaner, José F. Martínez, Miguel Angel Pérez‐Farrera, Andrew P. Vovides, Antonio Hernández‐López, Ayumi Tezuka, Atsushi J. Nagano, Yasuyuki Watano, Yuma Takahashi, Masashi Murakami, Tadashi Kajita   +11 more
doaj   +1 more source