CYCLES - transparency/shadow problem

Hi guys!

Ive been unsuccessfully trying to find solution for this for a day, so I’m posting a new thread.

I am having a problem with alpha mapped texture applied to a plane mesh, with alpha 0 areas set to transparent. However, when rendering, from some views/camera angles it looks like these parts also cast some sort of shadow.

Blend file, node setup and renderimages below.

Much appreciated if anyone finds time to solve this. Thanks!

I appended the objects to a new scene and it worked fine. I don’t know why in your file it does that.

Set Transparency bounces to 2 at least on Render panel, Light Paths.

Thanks both! Works perfect with increased bounces.