There seems to be a lot of confusion, or just lack of info, as to what is D. arenarum, and whether anyone has the real deal. Here are some pics of what I purchased as D. arenarum. It's a super fast grower. As you can see it looks a lot like D. lutescens, but it's supposed to from what I have read. Except, as you can see, it has a lot of nice color. Way more than a typical D. lutescens, and it certainly is growing a lot faster. Can anyone straighten me out???