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Ash ( Fraxinus)

Red Ash
Fraxinus pennsylvanica velutina
Image source: [ 1 ]

A tree or shrub, of the genus Fraxinus , belonging to the Oleaceae family. Found principally in northern temperate zones. Ash trees usually display small clusters of greenish flowers and wind-disperse their characteristic long-winged fruit. The white ash ( F. americana ) is used as a source of durable hardwood timber while the blue ash ( F. quadrangulata ) provides a blue dye, hence the name. The mountain ash and prickly ash are not members of this genus. [ 2 ]

 

 

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Olive ( Oleaceae)

Wild Olive
Foresteria pubescens
Image source: [ 3 ]

The Olive, Oleaceae , family of trees and shrubs are generally found in warm, temperate climates and the Old World tropics. The true olive tree, although known as Olea europaea , is actually native to Asia Minor. This small, evergreen tree produces the olive which can be eaten or pressed into olive oil. Other members of this family include the ash, lilac, true jasmine and Forsythia . The olive branch has long been a symbol of peace. [ 4 ]


 

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[1] Martin, Paul S., and Drew, Charles M., 1970. "Additional scanning electron micrographs of southwestern pollen grains."
    Journal Arizona Academy of Sciences 6 ( 2 ): 140 - 161 . Palynology Department, University of Arizona : http://geo.arizona.edu/palynology
[2]
The Concise Columbia Electronic Encyclopedia, Third Edition : http://www.encyclopaedia.com
[3]
Solomon, A.M., King, J.E., Martin, P.S. and Thomas, J., 1973. "Further scanning electron photomicrographs of southwestern pollen grains."
    Journal Arizona Academy of Sciences 8 ( 3 ): 135 - 157. Palynology Department, University of Arizona : http://geo.arizona.edu/palynology
[4]
The Encyclopaedia Britannica Online : http://www.britannica.com
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  http://www.hon.ch/Library/Theme/Allergy/Glossary/olea.html Last modified: Fri Jun 28 2002