High sekelink!
Please take what I am about to say as with a very large dose of skepticism and distrust. That last photo you post does very much look like a preflower of the female variety. HOW EVER it very well could be a think stipule, I.E a small straight flat leaf found at the base of each branch. Though it does very much look like a preflower to me*..
But please, please, please dont quote me on that. its really way to early to tell with any thing beyond a 34.487% certainty.
Edit: I also wanted to say I really like your set up, simple but loaded with potential! Beautiful ladies as well keep up the good work!