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Brazilian species with fairly thick, leathery leaves. First blooming on this plant with two spikes. [ATTACH] [ATTACH] [ATTACH]
What attracted me to this thing is the thick (really thick) heart-shaped leaves, like a Hoya sp.! The flowers are by comparison insignificant....
Or Pleurothallis circumplexa as it was named before. Though I am not sure if the name is correct as all pictures I find on Acianthera circumplexa...