This is the type species for the genus Bifrenaria. The vegetative part looks like harrisoniae or thyriantina, but the flowers are very different. Very very dark purple petals and sepals, with a soft purple lip. Not scented.
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Oh don't the day seem lank and long, when all goes right, and nothing goes wrong.
And isn't your life extremely flat, when you've nothing whatever to grumble at. W.S. Gilbert