The late Dr. Lewis Anderson, internationally known Duke bryologist and Howard Crum, authors of the two-volume Mosses of Eastern North America, climbed with me one dry day to the top of Cedar Cliff in Jackson County and pointed out the rare Macrocoma sulvantii growing on limbs of old red cedar trees. As usual he collected a few samples for his frequent exicotti (exchange specimens) he shared with the bryologist community far and wide. He suggested we might find it on old cedar trees and that has been the case but I've not yet seen it in any additional counties listed by the Natural Heritage Program.
The attached macro digital photos illustrate the structure of a pressed specimen (no. 1) and pointing to the sporophyte with a dissecting needle (no. 2).