An inflatable fabric cushion is disclosed that can maintain a high internal pressure while having an exposed inflator squib. Plants are very vigorous, forming many basal shoots, symmetrical in form and suitable for production in commercial 6 or 8 inches pots from a single tissue culture plantlet. A pressure source in communication with the fluid flow lines provides pressure to assist in supplying a pressurized flow of fluid through the flow line to the nozzles. A second semiconductor die is mounted to the first semiconductor die. At least one face of the two convex lenses in the fourth lens group is formed from an aspheric face.