PT - JOURNAL ARTICLE AU - Munkvold, Gary P. AU - Neely, Dan TI - A Cylindrosporium Leaf Spot on Oak AID - 10.48044/jauf.1989.036 DP - 1989 Jul 01 TA - Arboriculture & Urban Forestry (AUF) PG - 162--164 VI - 15 IP - 7 4099 - http://auf.isa-arbor.com/content/15/7/162.short 4100 - http://auf.isa-arbor.com/content/15/7/162.full SO - JOA1989 Jul 01; 15 AB - A Cylindrosporium fungus was consistently associated with and isolated from circular leaf spots on Quercus rubra. It was examined in pure culture and on leaves by light and electron microscopy and identified as C. quercus Sorok. Growth of the fungus in culture was best at 27°C; germination of conidia was best at 24-27°C. Typical symptoms were produced on only 1 of 56 inoculated oak seedlings. This report is the first of C. quercus in Illinois and the first of a Cylindrosporium on Q. rubra.