Phytophthora cinnamomi Associated with Mortality of Native Vegetation in South Africa. S. L. Von Broembsen, Plant Protection Research Institute, Private Bag X5017, Stellenbosch 7600. F. J. Kruger, South African Forest Research Institute, P.O. Box 727, Pretoria 0001, South Africa. Plant Dis. 69:715-717. Accepted for publication 16 November 1984. Copyright 1985 The American Phytopathological Society. DOI: 10.1094/PD-69-715.

Isolations were made from dead and dying plants from native vegetation in mountainous areas of the South Western Cape Province of South Africa. Phytophthora cinnamomi was recorded on 11 genera from five families of native plants at 28 remote, apparently undisturbed sites. No sign of invasion of the native plant communities by P. cinnamomi was observed. P. cinnamomi appears to be indigenous to the mountains of this region.

Keyword(s): indigenous hosts, Proteaceae, rivers.