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Juniper

Family, Genus: Cupressaceae, Juniperus

Size  21 - 36 um
Shape  spheroidal
Exine  1.5 um thick
Intine  notably thick, up to 6.5 um
Pores/furrows  none
Sculpting  microverrucate (small warty processes)
Bloom Period  late March, April, and May
Allergenicity  in large amounts may cause hay fever

Thumbnails:
        
J. Sabinoides       Eastern Red Cedar            Eastern Red Cedar

Dr. M. Davis images:
Juniper

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