Ron, I have bloomed 25 or so malipoense. All were the species. All were divisions of what may have been collected material purchased here and there in the US. (I have never done any importing myself). I have had color vary from vivid lime green, to deep dark green, to pale green, to gray green, to yellow green. Your description of yellow green flowers does sound like it is the normal species, just a less than common colored form of it. If the features of the staminode, column and form of the flower and the foliage conform to the type descriptions for malipoense, then you have the real deal and not likely a hybrid. The problem with judges is that they are not taxonomists, and will often make taxonomic decisions without knowledge of what is normal range of traits for a population. I was surprised by the variations I have seen. Email photos to a taxonomic authority like Drs. Guido Braem or Eric Christenson and see if they concur. Malipoense is a well known concept, a couple of good photos, face, side, foliage and staminode should suffice to verify an identity. Then show it again the next time it blooms with a copy of the note from your authority. Good luck
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