stipule
noun
stip·ule ˈsti-(ˌ)pyül 
: either of a pair of small, usually leaflike appendages borne at the base of the petiole in many plants
Example Sentences
Recent Examples on the Web Remove the lower leaves, any flaky stipules on the stem and blossoms. 
Betty Cahill, The Denver Post, 7 Apr. 2017
Betty Cahill, The Denver Post, 7 Apr. 2017 Word History
Etymology
New Latin stipula, from Latin, stalk; akin to Latin stipes tree trunk
First Known Use
circa 1793, in the meaning defined above