Allergen of the month--white bursage.

  title={Allergen of the month--white bursage.},
  author={Richard W. Weber},
  journal={Annals of allergy, asthma & immunology : official publication of the American College of Allergy, Asthma, & Immunology},
  volume={114 5},
Ragweed plants, genus Ambrosia, are native to the North American continent, found across southern Canada to the Pacific Northwest, and extending southward into northwestern Mexico.1,2 Ragweed is found uncommonly in Central and South America. A dozen species occur within the Sonoran Desert. White bursage, Ambrosia dumosa, also known burro-weed or burrobush, is prevalent in the Southwestern States and northwestern Mexico. It and creosote bush, Larrea tridentata, are dominant species in the Mojave… CONTINUE READING