First blooming of this plant. I got it from Olympic Orchids as a small seedling. Is this really P. pallens? The shape of the lip has some resemblance to P. fasciata.
Phalaenopsis pallens on Flickr
Phalaenopsis pallens lip on Flickr
Phalaenopsis pallens lip & anterior callus on Flickr
Update: I dissected one flower, and I now think this is really P. pallens.
Side view of the lip (one of the lateral lobe is removed to show the callus):
Phalaenopsis pallens lip on Flickr
Top view of the mid lobe (top) and the detached lateral lobe (bottom) of the lip of P. pallens:
Phalaenopsis pallens lip on Flickr
Two sets of the callus can be seen. The posterior callus (closer to the place where the lip is attached to the column/flower) is a distinguishing character of P. pallens. P. pallens has a clean two-tipped posterior callus. The other related species such as P. fasciata, P. hieroglyphica, P. lueddemanniana have more complex (bunch of sticks/hairs) posterior callus. So this plant seems to match well with P. pallens.