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Fir
Family, Genus: Pinaceae, Abies or Pseudotsuga
| Size | 100 - 130 um including bladders, 65 - 80 um without bladders | |
| Shape | spheroidal with bladders | |
| Exine | very thick on dorsal side, 4 - 5 um | |
| Intine | 3 um | |
| Pores/Furrows | neither are present | |
| Sculpting | coarsely reticulate | |
| Bloom Period | April to may | |
| Allergenicity | insignificant |
Thumbnails:
Dr. M. Davis images:
Balsam Fir Fir
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