Sedge Buster Part 2 - Cyperus Lesson 7

I seem to be stuck. The Cyperus collection is interesting and I don't seem to be making much progress. These pictures are Cyperus erythrorhizos, two different ones, but both from Tangipohoa Parish in Louisiana. Check out the zigzag wings on the florets of this first one. Purty eh!
The second picture is just a few achenes and scales. This speices is big, as flat sedges go, but the scales are little, less than 2mm. The scale in the upper right of this picture still has wings attached.