winterberry, name for two species of shrubs or small trees of the genus Ilex of the family Aquifoliaceae ( holly family), native to the eastern half of North America. Both are deciduous but have winter-persistent bright red or yellow berries. The Virginia winterberry, or black alder ( I. verticillata ), has toothed but spineless narrow leaves, hairy beneath. The similar smooth winterberry ( I. laevigata ) has smooth leaves. Winterberry is classified in the division Magnoliophyta , class Magnoliopsida, order Celastrales, family Aquifoliaceae.

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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