What is "ilex opaca"

Holly \Hol"ly\ (h[o^]l"l[y^]), n. [OE holi, holin, AS. holen, holegn; akin to D. & G. hulst, OHG. huls hulis, W. celyn, Armor. kelen, Gael. cuilionn, Ir. cuileann. Cf. 1st Holm, Hulver.]

1. (Bot.) A tree or shrub of the genus Ilex. The European species ( Ilex Aquifolium) is best known, having glossy green leaves, with a spiny, waved edge, and bearing berries that turn red or yellow about Michaelmas.

   Note: The holly is much used to adorn churches and houses, at Christmas time, and hence is associated with scenes of good will and rejoicing. It is an evergreen tree, and has a finegrained, heavy, white wood. Its bark is used as a febrifuge, and the berries are violently purgative and emetic. The American holly is the Ilex opaca, and is found along the coast of the United States, from Maine southward.
   --Gray.

2. (Bot.) The holm oak. See 1st Holm.

   Holly-leaved oak (Bot.), the black scrub oak. See Scrub oak.

   Holly rose (Bot.), a West Indian shrub, with showy, yellow flowers ( Turnera ulmifolia).

   Sea holly (Bot.), a species of Eryngium. See Eryngium.

Ilex opaca, the American holly, is a species of holly, native to the eastern and south-central United States, from coastal Massachusetts south to central Florida, and west to southeastern Missouri and eastern Texas.