The ornamental design for a wreath, as shown and described.
FIG. 1 is a front elevational view of a wreath showing my new design.
FIG. 2 is a rear elevational view of the wreath, the continuous fringe
being indicated by a dot-dash line over some areas of the circumference
for ease of illustration.
FIG. 3 is a right side elevational view of the wreath.