A biomass feed system includes a device to propel an airborne flow of the biomass along a trajectory within a collection device. At least one air flow port is disposed and operable in cooperation with at least one fan for discharging a flow of air for creating a blanket of pressurized air within the interior cavity beneath the trajectory for supporting and extending a distance of travel of the biomass within the collection device. The collection device can include an air flow outlet adjacent to a terminal end of the trajectory, to and through which the pressurized air will flow, in a manner for lifting and carrying at least some of the airborne biomass farther into the interior cavity. And, vanes or other elements can be provided to used to achieve better sideward distribution.