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| Size | 23 - 38 um | |
| Shape | prolate spherical | |
| Exine | 1.5 um thick | |
| Intine | .8 - 1.0 um thick | |
| Pores | tricolpate, furrow membranes have fine, granular appearance | |
| Sculpting | striate to reticulate | |
| Bloom Period | April - May | |
| Allergenicity | All Maple pollen is highly allergenic |
Thumbnails:

Silver Maple Silver Maple Norway Maple Norway Maple

Red Maple
Dr. M. Davis pictures:
Black Maple Mountain Maple Norway Maple Red Maple
Silver Maple Sugar Maple Striped Maple
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
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