Would someone have any idea what's going on with my jade plant? I recently bought a bonsai tree (ficus), and when researching online how to care for it, I noticed pictures of jade plants that look NOTHING like mine. I'm wondering if something is wrong with it. There isn't a main trunk, it's just several branches that bend over the rim of the pot, and then bend updward. It seems to be self-supporting and strong. However, what looks like a white powder is on some of the leaves and there is always a ring of brown "dust" on the shelf underneath the branches. Also, the clay pot that it's in has the white powder around the middle of the pot. Does anyone have any insight or suggestions? Thanks!

Here is a picture of the plant; I'll post more detailed pictures of the leaves and dust below.

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