Gouania lupuloides, known as chewstick[1] or whiteroot, is a neotropical plant of the family Rhamnaceae.

[2] Gouania lupuloides is plentiful around the edges of clearings but appears only occasionally in the forest canopy.

G. lupuloides can fruit as early as January, and as late as May with a peak in March and April.

[2] In Jamaican patois a vine is called a wis (wythie).

To clean one's teeth with this plant one cuts off a portion of the vine, peels off the bark and chews the tip.