rleechb,
you may be right with A. vermiculata! I thought the radials were a bit too prominant, but that could be the angle of the foto.
A. plana has very different radials, strongly appressed and the structure is extremely fine.
A. gomezi is not so heavily built in my experience and has radials of two distinct sizes (tubular and pocket), while A. tortuosa has radials of many different sizes. Otherwise, they have a similar look. I'll stick with A. tortuosa for now.
maybe someone else will chime in.