Species currently generally classified as Phalaenopsis that may have variously been Doritis, Kingidium or Kingiella in other classification schemes have 4 pollinia. The more classic Phalaenopsis generally have 2. So if you look at Phal parishii or Phal deliciosa, like Phal pulcherrima, you'll see 4 pollinia; while Phal amabilis or Phal violacea etc. have 2. It was probably a major characteristic to divide the genera at one time. Hybrids might go either way.