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RMRS-GTR-98: Mistletoes of North American Conifers


Geils, Brian W.; Cibrián Tovar, Jose; Moody, Benjamin, tech. coords. 2002. Mistletoes of North American Conifers. Gen. Tech. Rep. RMRS­GTR­98. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. 123 p.

Mistletoes of the families Loranthaceae and Viscaceae are the most important vascular plant parasites of conifers in Canada, the United States, and Mexico. Species of the genera Psittacanthus, Phoradendron, and Arceuthobium cause the greatest economic and ecological impacts. These shrubby, aerial parasites produce either showy or cryptic flowers; they are dispersed by birds or explosive fruits. Mistletoes are obligate parasites, dependent on their host for water, nutrients, and some or most of their carbohydrates. Pathogenic effects on the host include deformation of the infected stem, growth loss, increased susceptibility to other disease agents or insects, and reduced longevity. The presence of mistletoe plants, and the brooms and tree mortality caused by them, have significant ecological and economic effects in heavily infested forest stands and recreation areas. These effects may be either beneficial or detrimental depending on management objectives. Assessment concepts and procedures are available. Biological, chemical, and cultural control methods exist and are being developed to better manage mistletoe populations for resource protection and production.

Keywords: leafy mistletoe, true mistletoe, dwarf mistletoe, forest pathology, life history, silviculture, forest management


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http://www.fs.fed.us/rm/pubs/rmrs_gtr098.pdf
PDF File Size: 1 MB

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Contents
PDF File Size: 30 K

Chapter 1. Loranthaceae and Viscaceae in North America
B. W. Geils, I. Vázquez Collazo
PDF File Size: 105 K

Chapter 2. Psittacanthus in Mexico
I. Vázquez Collazo, B. W. Geils
PDF File Size: 110 K

Chapter 3. Phoradendron in Mexico and the United States
B. W. Geils, D. Wiens, F. G. Hawksworth
PDF File Size: 105 K

Chapter 4. Arceuthobium in North America
F. G. Hawksworth, D. Wiens, B. W. Geils
PDF File Size: 220 K

Chapter 5. Damage, Effects, and Importance of Dwarf Mistletoes
B. W. Geils, F. G. Hawksworth
PDF File Size: 80 K

Chapter 6. Dwarf Mistletoe Surveys
J.A. Muir, B. Moody
PDF File Size: 85 K

Chapter 7. Management Strategies for Dwarf Mistletoes: Biological, Chemical, and Genetic Approaches
S. F. Shamoun, L .E. DeWald
PDF File Size: 90 K

Chapter 8. Management Strategies for Dwarf Mistletoe: Silviculture
J. A. Muir, B. W. Geils
PDF File Size: 110 K

Appendix A: References
PDF File Size: 110 K

Appendix B: Scientific and Common Names of Trees
PDF File Size: 50 K

Appendix C: Acknowledgments
PDF File Size: 25 K

Appendix D: Glossary
PDF File Size: 35 K

Appendix E: Index
PDF File Size: 35 K


Title: RMRS-GTR-98: Mistletoes of North American Conifers
Electronic Publish Date: September 25, 2002
Last Update:
June 20, 2007

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