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Nettle
Family, Genus: Urticaceae, Urtica
| Size | 12 - 15 um | |
| Shape | spheroidal or oblate spheroidal | |
| Exine | .5 um thick | |
| Intine | relatively thin, 3 - 4 um beneath pores | |
| Pores/furrows | 3 - 4 porate, with onci | |
| Sculpting | smooth | |
| Bloom Period | summer and early autumn | |
| Allergenicity | moderate to highly allergenic, important allergen in Europe |
Thumbnails:
Nettle (Urtica sp.) taken by Brian Hoffman
Dr. M. Davis images:
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