3 years ago I bought a nice Phalaenopsis schilleriana 'Pink Butterfly." It was a meristem propagation. The next year it produced a nice inflorescence and also another growth that first appeared to be a normal inflorescence but soon turned out to be a new basal shoot that rapidly produced leaves and roots of its own. After a while I separated the new growth and potted it up. That plant grew well and is now producing another new basal shoot, but no normal inflorescence.
I assume all your other Phals, especially those with strong P. schilleriana inheritance, are growing & blooming normally, & this problem is not cultural.
This is a genetic mutation caused by excessive meristemming. It is commonly caused by nurseries trying to milk as much profit as possible out of a hapless prizewinner. That is why stem props, which are actually developed parts of the mother plant, are so much more expensive than meristems. Your plant may never bloom again. If you can, go back to the supplier & see if you can get a refund or a different plant. It is against the law in some states, and against the code of ethics of the nursery trade, to sell a plant that is not "true to name," although the ability to bloom is never guaranteed.
Many years ago I bought a meristem of a famous hexaploid, P. Golden Emperor 'Sweet', FCC/AOS. Like your plant, it bloomed properly once, if I recall correctly. The following year it reverted to the diploid form. I could see right away by the foliage. When it bloomed, it was a frightful dog & I threw it out. Those are the breaks.
Iris
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