I would suggest a good clear picture of each will help greatly. Guessing is not going to help anyone. As a starter, Phal bastianii is a clear sister to phal. mariae. The 2 main differences reported are that the spikes on mariae hang down whereas bastianii are erect & self supporting. The hairs on the lip of bastianii are few where mariae is quite hairy. Flowering is the only way to get close.