From what I can see in the photos, that is the lower-most, or oldest, leaf. It is natural for your Phalaenopsis to periodically shed these old leaves as it grows. I never cut them off but let them go through the process of totally drying up and falling off naturally. This could take several weeks. Common wisdom says that, as the leaf is dying and drying up, it "recycles" useful nutrients back into the plant. If you cut it off, you will have a fresh wound on green tissue, which is a much bigger risk to the plant.
Edit: Of course, if the leaf was diseased in some way, that would be a different situation.
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Cheri
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Last edited by Mountaineer370; 04-22-2025 at 09:56 AM..
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