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Willow
Family, Genus: Salixaceae, Salix
| Size | polar view: 28 um, equatorial view: 24 um | |
| Shape | spheroidal to prolate-spheroidal | |
| Exine | 1 um thick | |
| Intine | .8 um thick | |
| Pores/furrows | tricolporate, reticulation finer toward furrows and pores | |
| Sculpting | coursely reticulated, meshlike | |
| Bloom Period | April and early May | |
| Allergenicity | largely insect pollinated, minor offender for allergies |
Thumbnails:
Willow Willow Willow Willow
Dr. M. Davis images:
Black Willow Pussywillow
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