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Ancient in origin and once widespread on Earth, today cycads comprise few living survivors in limited distributions in the tropics and subtropics. A study of these extant members and the cycad fossil record dating back to over 250 million years ago has revealed that cycads have remained relatively unchanged throughout their long history. Indeed, cycads are the sister group to all other extant seed groups, and an understanding of their evolution can shed light on the evolution of all modern plants. This volume, consisting of 34 papers, reports the work of 100 delegates from 15 different countries • including 50 cycad experts from China • who convened in Shenzhen, China for The 9th International Conference on Cycad Biology (Cycad 2011). The Conference covered eight main study areas: Genetics and Genomics, Conservation, Taxonomy and Phylogeny, Ecology, Horticulture, Toxicology, Economic Botany, and Information Management. Central to the Conference was the International Union for Conservation of Nature (IUCN)/Special Survival Commission (SSC)•Cycad Specialist Group, which met to update information on cycads on the Red List for 2011.
Papers included in this Digital Download are listed below. For a complete list of papers produced from cycad proceedings published by NYBG Press, click here.
Comparative Studies of Tracheary Element Structure of Some Gymnosperms with Angiosperms
Yu-Yuan Huang, Yan-Hua Han, Li-Jun Wei, and Jia-Zhuo Wang
Anatomical Description of the Cytoplasmic Connections Between the Transfer Cells and the Central Cell During Its Growth Stages in Ceratozamia mexicana Brongn. and Zamia furfuracea L.f. (Cycadales)
Mara Ydelia Snchez-Tinoco, Mark Engleman, and Andrew P. Vovides
Development Cycle of the Ovule and Seed of Zamia furfuracea L.f. (Cycadales)
Mara Ydelia Snchez-Tinocom, Andrew P. Vovides, and Mark Engleman
Spines and Prickles
Dennis Wm. Stevenson
An Introduction to the IUCN Species Information System Database as the Platform for Cycad Red List Assessments
J. De Wet Bsenberg and John S. Donaldson
Botanic Gardens Cycad Collections: 4th GBGC Symposium Report
Andrew P. Vovides, M. Patrick Griffith, Dennis Wm. Stevenson, Nan Li, Yong Li, Shuijiao Fang, Dan Qian, Zhirong Zhong, Aldo Moretti, and Karin van der Walt
Range, Density, and Threatened Status of Cycas nongnoochiae
Thomas E. Marler, Anders J. Lindstrm, and Wes Field
Cycas debaoensis Conservation Project"A Village-Based Approach
William Tang, Nian Liu, Anders Lindstrm, Limei Tang, and Michael A. Calonje
Cycad Ethnobotany in South Africa: Complexities with Identifying and Quantifying Species
Stephen R. Cousins, Vivienne L. Williams, and Ed T. F. Witkowski
Impact of Disturbance on the Demography of the Endangered Species Ceratozamia mexicana Brongn.
Andrs Rivera-Fernndez, Lourdes Georgina Iglesias-Andreu, Lzaro R. Snchez-Velsquez, Pablo Octavio-Aguilar, Mario Vzquez-Torres, N. Flores-Estvez, and Mauricio Luna-Rodrguez
Effect of Disturbance on Population Dynamics of Mexican Cycads
Pablo Octavio-Aguilar, Andres Rivera-Fernndez, Lourdes Georgina Iglesias-Andreu, Andrew P. Vovides, Miguel ?ngel Perez-Farrera,
Manuel Martnez-Melendez, and Jorge Gonzlez-Astorga
Understanding Life History of Zamia Species Using Data from Field Studies and Botanical Collections
Hydraulic Determination of Leaf Nutrient Concentrations in Cycads
Yong-Jiang Zhang, Lawren Sack, Guillermo Goldstein, and Kun-Fang Cao
The NEEDLY Gene Is Associated with Sexual Expression in Ceratozamia mexicana Brongn. (Zamiaceae)
N. G. Snchez-Coello, Lourdes Georgina Iglesias-Andreu, M. Luna-Rodriguez, Pablo Octavio-Aguilar, M. Vzquez-Torres, Andres Rivera-Fernndez, and J. Adame-Garca
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