Orbexilum stipulatum
Orbexilum stipulatum , commonly known as largestipule leather-root or Falls-of-the-Ohio scurfpea , was a flowering plant that was endemic to Rock Island in the Falls of the Ohio; an area of rapids and rocky limestone outcrops in Kentucky's portion of the Ohio River . 
<triplet> Kentucky's <subj> Ohio River <obj> located in or next to body of water