I agree that a picture of the whole plant would help. If I could take a wild guess based on some common bulbos I've seen for sale, I would say bulbophyllum gibbosum
Could be a bulb semperflorens. Right size and shape. I can’t confirm the coloring from the pic
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All the ways I grow are dictated by the choices I have made and the environment in which I live. Please listen and act accordingly
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Rooted in South Florida....