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Fraxinus pennsylvanica - http://www.fs.fed.us/database/feis/plants/tree/frapen/all.html
Describes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology. |
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Fraxigen - http://herbaria.plants.ox.ac.uk/fraxigen/
Project to strengthen the scientific basis for the sustainable conservation and regeneration of European Fraxinus populations, through a fuller understanding of the biological and ecological processes which have shaped them. |
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Fraxinus - http://plants.usda.gov/java/profile?symbol=FRAXI
Profiles of all US species of ash. |
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Fraxinus nigra - http://www.fs.fed.us/database/feis/plants/tree/franig/all.html
Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology. |
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Fraxinus anomala - http://www.fs.fed.us/database/feis/plants/shrub/fraano/all.html
Includes distribution and occurrence, botanical and ecological characteristics, value and use, and fire ecology. |