The spikelets of mannagrass are arranged loosely on an open panicle.
Mannagrass can resemble ryegrass and annual bluegrass, which are also cool-season grasses. It can be separated by its blunt leaf tip in contrast to the long tapering leaf tips of the others.
The ligule is the membraneous structure at the base of the leaf in this photograph. It is large enough to be seen readily without magnification.
The LSU AgCenter and the LSU College of Agriculture