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Cycad classification: concepts and recommendations.

Book cover for Cycad classification: concepts and recommendations.

Description

This book presents the current state of our knowledge of the systematics of the approximately 300 species of cycads. It has been developed from 15 papers presented at the conference in Miami. Guidelines are presented for the designation of species, species boundaries and species groupings, thus clarifying what has been a confused area of research. Two appendices are included in this volume. The fi...

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Chapter 1 (Page no: 1)

'We Hold these Truths ...'.

In order to develop classification guidelines for the Cycadales, a workshop was held in April 2002, at Montgomery Botanical Center in Miami, Florida, USA. Fourteen internationally-renowned cycad systematists spent 3 days identifying and developing guidelines that would provide a stable, practical and informative classification scheme for cycads. The participants agreed that convening such a workshop was vital, timely and necessary to produce a universally accepted evolutionary classification for the Cycadales in the near future. Before developing the guidelines, the participants first needed to identify the assumptions, or beliefs, that they hold to be true about cycad classification. These beliefs are presented under three categories: (i) beliefs about biological relationships; (ii) beliefs about what systematists can and should do in order to understand biological relationships; and (iii) beliefs about what cycad systematists can and should do in order to understand relationships in the Cycadales.

Other chapters from this book

Chapter: 2 (Page no: 13) Saving ghosts? The implications of taxonomic uncertainty and shifting infrageneric concepts in the cycadales for red listing and conservation planning. Author(s): Donaldson, J.
Chapter: 3 (Page no: 23) Character evolution, species recognition and classification concepts in the Cycadaceae. Author(s): Hill, K. D.
Chapter: 4 (Page no: 45) Morphological characters useful in determining species boundaries in Cycas (Cycadaceae). Author(s): Lindström, A.
Chapter: 5 (Page no: 57) Comments on Cycas, Dyerocycas and Epicycas (Cycadaceae). Author(s): Chen ChiaJui Hill, K. D. Stevenson, D. W.
Chapter: 6 (Page no: 69) Classification concepts in Encephalartos (Zamiaceae). Author(s): Vorster, P.
Chapter: 7 (Page no: 85) Classification concepts in Macrozamia (Zamiaceae) from Eastern Australia. Author(s): Forster, P. I.
Chapter: 8 (Page no: 95) Classification concepts in Ceratozamia (Zamiaceae). Author(s): Whitelock, L. M.
Chapter: 9 (Page no: 109) Relationships and phytogeography in Ceratozamia (Zamiaceae). Author(s): Vovides, A. P. Pérez-Farrera, M. A. González, D. Avendaño, S.
Chapter: 10 (Page no: 127) A morphometric analysis of the Ceratozamia norstogii complex (Zamiaceae). Author(s): Pérez-Farrera, M. A. Vovides, A. P. Hernández-Sandoval, L. González, D. Martínez, M.
Chapter: 11 (Page no: 137) Hypotheses on the relationship between biogeography and speciation in Dioon (Zamiaceae). Author(s): Gregory, T. J. Chemnick, J.
Chapter: 12 (Page no: 149) Molecular phylogeny of Zamia (Zamiaceae). Author(s): Caputo, P. Cozzolino, S. Luca, P. de Moretti, A. Stevenson, D. W.
Chapter: 13 (Page no: 159) Systematics of Meso-American Zamia (Zamiaceae). Author(s): Schutzman, B.
Chapter: 14 (Page no: 173) Zamiaceae of Bolivia, Ecuador and Peru. Author(s): Stevenson, D. W.
Chapter: 15 (Page no: 195) In search of the true tree: guidelines for classification. Author(s): Osborne, R. Walters, T.

Chapter details

  • Author Affiliation
  • Montgomery Botanical Center, 11901 Old Cutler Road, Miami, FL 33156-4242, USA.
  • Year of Publication
  • 2004
  • ISBN
  • 9780851997414
  • Record Number
  • 20043021918