Assertion: cattail's stem | /r/HasProperty | rhizome
Facets:
Source sentences:
text: Cattails or bulrushes are wetland plants, typically 1 to 3 m tall (T. minima is smaller: 0.5-1 m), with spongy, strap-like leaves and starchy, creeping stems (rhizomes).
text: The root and underground stem (rhizome) are used to make medicine.