New guess. Since the material is usually related to the organ, I am going to guess brain, as Ginkgo is often said to help with memory. It also makes sense with the divide in the middle, and the stem coming down.
Ohh, yeah, I think it's a back view of the brain. Nice work, Fred. You kind of have to squint to make it work, but what do you expect when the spine has an arbitrary number of vertebrae and the ureters are attached to the tops of the kidneys?
It kind of looks like a bladder to me, but a brain also sounds plausible. Maybe this lady just included it to mess with our minds, and it's not meant be be an organ at all.