[Atlas of the most important allergenic pollens in Mexico].

The importance of pollens as etiologic agents of allergy in Mexico is out of question, as have been demonstrated since 1940 in several studies performed in order to identify allergenic flora in many cities of México. With the aim to improve the knowledge about pollens related to allergic diseases we made an atlas with photographs of the most relevant allergenic pollens in México according to skin tests performed in allergic patients. Photographs of 31 taxa and a brief description of their microscopic features are presented along with their taxonomical relationships.