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Ironwood
Family, Genus species: Betulaceae, Ostrya virginiana
| Size | 22 - 27 um | |
| Shape | circular to triangular | |
| Exine | 1 - 1.5 um thick | |
| Intine | less than 1 um thick | |
| Pores | triporate, equilaterally spaced around equator of grain | |
| Sculpting | rugulate with scabrate elements | |
| Bloom Period | early April to end of May | |
| Allergenicity | moderately allergenic |
Thumbnails:
Ironwood Ironwood Ironwood Ironwood
Dr. M. Davis images:
Ironwood
References:
Bassett, John, Clifford Crompton and John Parmelee. An Atlas of Airborne Pollen Grains and Common Fungus Spores of Canada. Canada Department of Agriculture, 1978.
Jelks, Mary, M.D. Allergy Plants that Cause Sneezing and Wheezing. World Wide Printing, Tampa, 1986.
Kapp, Ronald O. Pollen and Spores, Second Edition. The American Association of Stratigraphic Palynologists Foundation, 2000.
Lewis, Walter H., Prathibha Vinay and Vincent E. Zenger. Airborne and Allergenic Pollen of North America. The Johns Hopkins University Press, Baltimore and London, 1983.
page created by: Brian Hoffman