first bloom flowers are not fully open. flowers larger than normal for a first bloomer.
dislike the shape,and the size of the lip, could be bigger and , substance is typical for the species.
what I do like, the yellow in the throat is very pale, usually the yellow color is stronger.
P. Vitellina
this is very common Mexican species, this one has larger than normal flowers with strong vigorous and big Bulbs,
this is a recued plant from a fallen tree, otherwise if left there the plant will simply die.
flowers started to open 6 weeks and it is a successive bloomer this pictures are the lasts on both spikes, looks like this flowers will take another 14 days easily, Easy to grow plant.
last one is yet another mexican found species, B, cucullata. (very easy to grow)
Cheers
Antonio.