I agree it is a odd place for a male flower to show up. If you've ever harvested pollen ctwalrus then you know what they look like before the release they swell and you can see the yellow pollen at the parting lines. Can you take a pic with a daylight cfl so that we can see the coloring better? That would help a lot with the diagnosis.I don't know. I have never seen one directly on the top like that. Could just be some new growth.