Root Trapper Vine

Root Trapper Vine is a quest item only lootable by players on the quest Medicinal Purpose.

Source
Root Trapper Vines drop from Root Trappers south and east of Azure Watch on Azuremyst Isle.

As a quest objective

 * Medicinal Purpose - this quest is available from at Azure Watch on Azuremyst Isle.
 * Objective:
 * Anchorite Fateema at Azure Watch wants you to bring her 8.