Difficult to say actually. It kinda looks like it's seeded there, might be pollen sac with heavy trichome coverage. You should move the plant away, inspect it a bit more (like popping off some of those seed looking things to check it's seed or pollen).
Hi fellow grower, like sir_iso says it is hard to tell. It also looks similar to foxtailing but i could be wring about that. Again, like sir said inspect the plant a little more. See if seed are in there or not. Good luck and happy growing