Assertion: seaweed's holdfast | /r/HasProperty | unbranched cylindrical stipe
Facets:
Source sentences:
text: All species’ sporophytes consist of a ramified holdfast, an unbranched cylindrical stipe, and a blade with a percurrent, cartilaginous midrib, Alaria is frequently found with lacerations running from the margin to the midrib caused by the ravages of the sea.