title: Allergy Plants: That Cause Sneezing and Wheezing
author:  Mary Jelks 
description: A wonderful reference book letting us all know about the plants in nature that may cause our allergies to flare
zlib_text: POLLEN IN INDOOR AIR:
  SOURCES, EXPOSURES,
  AND HEALTH EFFECTS
  Michael L. Muilenberg, M.S.
  Department of Environmental Health
  Harvard School of Public Health
  Boston, Massachusetts
  44.1
  INTRODUCTION
  Pollen is an essential component in the life cycle of flowering plants. Any farmer, forester,
  beekeeper, or naturalist will attest that, without the movement of pollen from one plant to
  another, neither the plant kingdom, nor humans, would survive. At the same time, pollen
  can cause discomfort and sometimes debilitating symptoms in those whose immune sys-
  tems act inappropriately to pollen grains which come into contact with their mucosal mem-
  branes (eyes and respiratory system, in particular). While pollen-induced diseases may not
  be attributable to building design or operation, the impact of the subjects’ pollen (or other)
  allergies should be taken into account when assessing the health of any study population.
  44.2
  POLLEN AND FLOWER: DESCRIPTION AND
  FUNCTION
  The Biology of Flowering
  The po