The following are pictures of Seiridium canker on Leyland Cypress, one of the common causes for losses of this tree in Delaware.
Seiridium canker on Leyland Cypress. Note characteristic resin-flow on bark and dark fungal fruiting masses. Photo by Elizabeth Bush, Virginia Polytechnic Institute and State University, Bugwood.org.
Branch death on Leyland Cypress caused by Seiridium canker. Photo by Kevin Ong, Texas AgriLife Extension Service, Bugwood.org.