| Summary: | This work deals with identification and registration of the flowering period of plants known or suspected of causing pollinosis in Bahía Blanca city and surrounding area. Firstly 21 species were selected for study, and pollen was collected. This material was then used by allergy specialist physicians to obtain the allergens that were tested on patients affected by pollinosis. The flowering calendar of 21 species is presented. The period in which the most species of Poaceae and Chenopodiaceae families are in flower, is coincident with an increase in the intensity and the frequency of the disease symptons, tested by allergy specialists. This study is still in progress because more knowledge of the allergenic flora is required for the diagnosis and treatment of pollinosis.
KEY WORDS. Anemophilous pollen. Pollinosis. Allergenic flora.
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