It utilizes the bias between triangle grid pleats to alter the formation somewhat.
It also has a finishing touch that folds over the edges of the resultant petals.
You can forgo that last step and still have a pretty nice tessellation. I just thought it would be interesting to add that additional element.
It wasn't very difficult to fold nor to map. I may have a single module somewhere which I can upload a photo of at a later date.
Just used some large polygons to connect the repetitions.
A preliminary crease pattern sketch is shown.