Dendrobium kingianum blooms from apical inflorescences. "Bumps" on the pseudobulbs - if at the base - are either the emergence of roots, or the swelling of the "eyes" (rhizome leads) indicating new growths. That is not a keiki, but just the way the sympodial growth occurs. Keikies tend to form at the top of the pseudobulbs, instead of flower spikes, especially if the culture is incorrect.