Oops here is pic

So to answer your question yes. Turks cap is in the hibiscus family

It is a good year for these. Nice and warm so the blooming goes on forever. It is also called Sleeping hibiscus.

In my experience it gets quite large, will take shade, is a fall bloomer, and the top is killed to the ground in a hard freeze, but it comes back from the roots in spring. It is, or was, planted under oak trees around the fountain at the San Antonio Botanical Gardens. I haven't thought to check it out recently to see if it is still there. It's a nice foliage plant even when not blooming.

I had a 6' one growing under Oaks with an eastern exposure when I lived in Austin. It bloomed late November to christmas depending on the freezes. I think it is marginal out here where I am now. I am trying it again. Much slower going.

thanks everyone.