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Spruce
Family, Genus: Pinaceae, Picea
| Size | 54 - 61 um long, 48 - 52 um wide, 48 - 74 um total | |
| Shape | spheroidal with bladders | |
| Exine | up to 4 um on dorsal cap | |
| Intine | less than 3 um | |
| Pores/Furrows | neither present | |
| Sculpting | reticulate | |
| Bloom Period | May to June | |
| Allergenicity | not allergenic |
Thumbnails:
Spruce pollen taken by Brian Hoffman
Dr. M. Davis images:
White Spruce
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