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*DRAFT ** 5 (Kagan 1980). The seed on fungus- infected plants seldom reached maturity before the plant died back. Parasitized plants had a significantly higher incidence of aborted fruits. Parasitism and resulting fruit abortion can severely reduce the size of, or eliminate a population. (3) Other natural or manmade factors affecting the species' continued existence Habitat conditions and environmental stressors, such as drought and parasitism, may limit the survival and recovery of Bradshaw's lomatium populations. All currently known sites are relatively disjunct, separated by agricultural or urban development, substantial distance, and /or topography. Most sites also have relatively few plants and/or are small in area. The results of such habitat fragmentation (i.e., isolation, low seed dispersal, and reduced numbers of pollinators) may combine with other factors (i.e., disease or parasitism) to further threaten Bradshaw's lomatium. Site Specific Eugene School District property (conservation area) is primarily used for educational and recreational purposes. Grassy areas, including wet prairie habitat, are often mowed. Mowing may have both beneficial and adverse affects on Bradshaw's lomatium and other native plants. Although regular mowing may prevent succession, native grasses and forbs may be adversely affected when mowing is conducted before seeds have set in Iate summer. At time, early mowing may have reduced seed production of Bradshaw's lomatium in the conservation area. Vehicle and pedestrian traffic may adversely affect Bradshaw's lomatium in the conservation area. Damage may be most substantial after flowers have formed but before seeds have matured. Impacts of this type have been noted on school property at 18th Street and Pearl Avenue. In the Spring of 1996, habitat in this area was impacted by large gouges created by off -road vehicle use and by soil compaction from pedestrian traffic and vehicle parking. Such impacts could easily be reduced by the erection of barriers to eliminate vehicular damage. Public education may also increase awareness of the plant and its habitat within the Eugene area. While the conservation area supports few plants (n.25), it may be important to larger populations in the area. Smaller, disjunct colonies may serve two functions: 1) improve dispersal between populations by providing intermediate host plants for pollinators; and 2) conserve genetic diversity within the recovery area. The preservation of these small colonies may be important to the recovery of Bradshaw's lomatium.