Rasendracudamani 8.23

8.23

nāgavallīdalākārapatrayuktālpakandinī /
śrīśailotthā ca vajraghnī nāgakarṇīti sā smṛtā //

Having leaves resembling the leaves of betel-vine and possessing a small tuber, / originating on Śrīśaila, destroying hard stone [or diamonds]—it is known as nāgakarṇī;