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Measurements by the Environmental Protection Agency say that, unfortunately, the concentration of ambrosia pollen, the biggest allergen, is still high and in this period its values go from 7 to 11 ...

The Global Pollen Project is a web application for the digitisation of pollen reference material, and the crowdsourced identification of unknown pollen grains.

Add a description, image, and links to the pollen-identification topic page so that developers can more easily learn about it.

Total pollen values also are increasing year by year despite government efforts to eliminate Ambrosia. “Our pollen count suggests that this fight is not very successful,” Rodinkova said.

The problem is, however, that for many species the pollen is so similar that even experts can't tell them apart. New methods give hope that the identification can partly be done automatically in the ...

Several individual taxa showed significant increases in pollen intensity over the study period including spring Cupressaceae and Quercus pollen, while Ambrosia pollen showed a significant decrease.

What’s not to like? There are about 40 species in the Ambrosia genus; most originally evolved in North America. Some are from the subtropical and tropical Americas, and several are invasive introduced ...