Coelogyne trinervis

Coelogyne trinervis is a free-flowering orchid found in Burma, Thailand, Malaysia, Laos, Cambodia, Vietnam, Java and Sumatra.  I have three plants which are slightly different from one another.  One has huge pseudobulbs and leaves with pale flowers, one is a normal form and this one has smaller pseudobulbs with longer but narrower leaves.  I sometimes wonder whether this is a trinervis at all because the flowers do not have the musky fragrance.