I dunno if this helps, but some of my own pictures,
From my current reg seed, my own seed stock. A boy preflowering. There is a claw like growth in the node.
The Boy Claw, sack pre flower, more round with the clam shell claw look to it.
Girls, to me, are much easier to see, another one of my reg seeds.
female pre flowering, from my last grow.
It is more pointed or pointy sack, but here there is also the white pistols, pistols are easier to see.
It also seems to make more of a nest in the node where the male spreads out of the node.
Without macro on my camera I would never know, i use it a lot.
You still got half July to go, going to get off to the races big time I think in the GH.
I should add there are places that test the leaf DNA for sex, you can test after about a week after sprout.
) I transplanted the second female DTF into the 20g pot (after ripping out the Mandala dude) and watered everyone...
Took a shot of the twisted trunk of the Fruitylicious...I thought it would stunt her when she popped like that, but she is bushing out fine. Still not able to confirm sex on the Satori (both in GH3 and GH1). Both Cabin and Cottage full for the summer...hope they enjoy catching lights scents of cannabis in the warm summer breeze 