< Back | A to Z Index | Search | Home
Grass
Family: Poaceae (Gramineae)
| Size | 22 - 122 um | |
| Shape | spheroidal to ovoidal | |
| Exine | 1 - 1.5 um thick | |
| Intine | 1.5 - 5 um thick | |
| Pores | 1 pore, can have annulus | |
| Sculpting | finely reticulated | |
| Bloom Period | some in spring and fall, most mid summer | |
| Allergenicity | severely allergenic, second to ragweed in late summer |
Thumbnails:
Quack Grass Reed Canary Grass
Blue Gramma Grass Side Oats Gramma Grass
Canada Wild Rye Timothy Grass
Dr. M. Davis images:
orchard grass Ribgrass wild rice
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