FlytrapCare Carnivorous Plant Forums

I've been having problems with algae growth in some of my seed pots, so I thought I'd try water germination. For the most part, So Far, So Good. I've already removed a good number of (D.binata) sprouts from this test tube and this is what's left. As you can see, there are still two green plantlets in the pic. My question is: What are the brown pieces? Just failed plantlets? They've obviously had some growth, since they're larger than the seeds were. Do I keep them with the hope that they'll green up? Or, are they, like the Python's parrot, defunct? Thanks.