This is Catasetum planiceps. Planiceps comes from a combination of latin words meaning 'flat' and 'head', which seems appropriate. Normally this species produces several flowers at the end of a long upright spike. This is the first blooming on this specimen, and with a little more sun and humidity this plant will produce more in the future. The flowers do have a nice, fairly potent scent. It smells of licorice and menthol or something vaguely resinous. Looking inside the cupped lip reveals a series of very cool looking thin, darker green parallel stripes.
Easy growing, this plant seems to enjoy water and brightness. I am growing it in straight medium grade fir bark, though it is reported to be terrestrial at times, or rock dwelling, or tree dwelling. I guess it grows whereever it wants.