I plucked out some parts from the center of a marigold flower. Some are evidently the stamens, but there are structures which – upon magnification with Foldscope – appear to bear sacs filled with liquid, possibly nectar.
Following are the curled structures upon magnification:
I like how pretty and gem-like these look under Foldscope. I might have identified them incorrectly, though – so let me know!