Table 3.

Monthly isolations of Cytospora chrysosperma from aspen bark in natural aspen stands.

Month1% of samples with Cytospora2
On bark surfaceWithin bark
January0.00.0
February0.00.0
March0.00.0
April0.00.0
May3.40.0
June13.80.0
July20.70.0
August31.00.0
September17.20.0
October20.70.0
November20.70.0
December3.40.0
Total10.80.0

  • ↵1 Sampling was begun in May 1986, and continued through April 1987.

  • ↵2 Twenty-nine isolations were made each month from bark surfaces, and 29 isolations from within bark, for a total of 349.