Rhizoid:
Here is something you don't see every day. At the base of Utricularia
inflorescences are small specialized shoots called rhizoids. See the one arcing from the flower base (top-left)
to the bottom-center of this image? The function of rhizoids is unknown. Quite odd little things,
don't you think?
The leeches in this lake were much larger than this rhizoid.