Newly emerged leaves of a California fan palm, Washingtonia filifera, killed by pink rot, caused by Nalanthamala vermoeseni. Note the diamond scale, a fungal disease caused by Phaeochoropsis neowashingtoniae, which likely stressed this palm, making it susceptible to pink rot.

In this California fan palm pink rot, caused by <i>Nalanthamala vermoeseni</i>, has killed some of the newly emerging leaves. Note the diamond scale, a fungal disease caused by </i>Phaeochoropsis neowashingtoniae</i>, which likely stressed this palm, making it susceptible to pink rot.; Long Beach, Los Angeles Co., CA Credit: Donald R. Hodel, UCCE Los Angeles County — Newly emerged leaves of a California fan palm, Washingtonia filifera, killed by pink rot, caused by Nalanthamala vermoeseni. Note the diamond scale, a fungal disease caused by Phaeochoropsis neowashingtoniae, which likely stressed this palm, making it susceptible to pink rot. Credit: Donald R. Hodel, UCCE Los Angeles County