Location References

Arizona
    (1)
    http://ag.arizona.edu/pubs/diseases/az1124/#prr

Arkansas
    http://www.aspb.arkansas.gov/plant_pdfs/CIRCULAR%2011_EMERGENCY%20RULES_%20CHENIERE_SEED%20TESTING_RICE%20REGS_%20MB_TURF_NURSRY_DEC28_2006.pdf

California
    (1)
    http://www.ipm.ucdavis.edu/PMG/r1100911.html

Louisiana
  http://www.lsuagcenter.com/en/our_offices/research_stations/RedRiver/Features/Research/Plant_Pathology/Louisiana+Cotton+Disease+Atlas_seriespage-9.htm

New Mexico
    http://www.nmmastergardeners.org/Pdf%20FILES/Plant%20Pathogens.pdf

Nevada
    (2)

Oklahoma
    http://pods.dasnr.okstate.edu/docushare/dsweb/Get/Document-2321/F-7621web.pdf

Texas
    (2,3)

Utah
    (1)

Text citations:
  1. King, C. J., Hope, C., and Eaton, E. D. 1934. Further observations on the natural distribution of the cotton root rot fungus. Phytopathology 24:551-553.
  2. Percy, R. G. 1983. Potential range of Phymatotrichum omnivorum as determined by edaphic factors. Plant Dis. 67:981-983.
  3. Taubenhaus, J. J., and Ezekiel, W. N. 1930. Recent studies on Phymatotrichum root-rot. American Journal of Botany 17:554-571. (Stable URL: http://links.jstor.org/sici?sici=0002-9122%28193006%2917%3A6%3C554%3ARSOPR%3E2.0.CO%3B2-O)