FIG. 1 is a perspective view of the top, front and right side of a pushbutton dispenser cap showing our new design; FIG. 2 is a front elevational view thereof; FIG. 3 is a rear elevational view thereof; FIG. 4 is a right side elevational view thereof; FIG. 5 is a left side elevational view thereof; and, FIG. 6 is a top plan view thereof.