Doesn’t look much like a hibiscus to you?  It is a macro of the center of the calyx after the flower has withered and fallen off.  It was just so intriguing to me that I had to post it.  It reminds me of something, but I can’t quite put my mind’s finger on what it is.

https://ceenphotography.com/2016/12/17/flower-of-the-day-december-18-2016-poinsettia/