|
Hay fever is only provoked by airborne pollen, sometimes by amphiphilous species (in with pollination occurs by the wind, as well as by insects). It is a luck that only little types ofpollen are allergenic among entomophilous plants (with wind pollination) which produce large amounts of airborn pollen (see tables here below about allergenic pollen). The risk to be in contact with pollen transfered by insects (entomophilous), like that of most garden plants with colorful flowers, is low, and besides this pollen is known to be little allergenic. Some species which in first instance are suspicious because they release remarkable amounts of pollen in the air do not (or seldomly) cause hay fever (Examples: the Ash, Aspen and Taxus, resp.
|