From Sharon Douglas at the Connecticut Agricultural Experiment Station (CAES):
A natural infection of pachysandra in the landscape by Cylindrocladium pseudonaviculatum,
the boxwood blight fungus, was confirmed by CAES plant pathologists on
29 June 2012. The pachysandra sample had been collected by a CAES
inspector while visiting a residential property in Fairfield County that
had installed B&B boxwood plants in May 2012. These plants had
been confirmed by CAES to be infected with boxwood blight one week prior
to the visit. The inspector noticed that an established bed of
pachysandra bed adjacent to the infected boxwood had unusual, foliar
symptoms, so he collected the sample to bring to the diagnostic lab for
Symptom included small to larger necrotic lesions with
well-dileneated margins on the leaves. All of the necrotic lesions had
distinct, diffuse yellow haloes. No lesions were observed on the stems
and no defoliation had occurred. The overall color of the pachysandra
leaves were normal and dark green.
The CAES had previously reported pachysandra as a boxwood blight host, but it was innoculated in the lab and greenhouse.
To learn more, go to the Connecticut Agricultural Experiment Station document.