#fern_seed  the asexual spore of ferns that resembles dust; once thought to be seeds and to make the possessor invisible
  supertype:  #spore  small usually single-celled reproductive body produced especially by certain bacteria and algae and fungi and nonflowering plants
  part of:  #fern  any of numerous flowerless and seedless vascular plants having true roots from a rhizome and fronds that uncurl upward; reproduce by spores

No statement uses or specializes #fern_seed; click here to add one.