What is "south-sea tea"

South \South\, a. Lying toward the south; situated at the south, or in a southern direction from the point of observation or reckoning; proceeding toward the south, or coming from the south; blowing from the south; southern; as, the south pole. ``At the south entry.''
--Shak.

South-Sea tea (Bot.) See Yaupon.

Yaupon \Yau"pon\, n. (Bot.) A shrub ( Ilex Cassine) of the Holly family, native from Virginia to Florida. The smooth elliptical leaves are used as a substitute for tea, and were formerly used in preparing the black drink of the Indians of North Carolina. Called also South-Sea tea. [Written also yapon, youpon, and yupon.]