Black haw is a white flowered shrub native to North American that grows up to 30 feet tall and is found in wooded areas and beside streams. The American cranberrybush, Viburnum opulus, grows from 8 to 10 feet high with branches generally erect and smooth. The 3-lobed, broadly oval, coarsely toothed leaves are usually smooth on the upper surface, but with the veins on the lower surface somewhat hairy. The snowy white flower clusters, which appear in June, are about 3 to 4 inches across. The flowers on the outside of the cluster are sometimes an inch in diameter, but those on the inside are smaller. The red fruits, which ripen rather late in the season and remain on the bush for some time, are roundish, sour and contain a round flat stone. They bear some resemblance to the cranberry; hence some of the common names applied to the plant. ^{Sievers, A.F. 1930.The Herb Hunters Guide. Misc. Publ. No. 77. USDA, Washington DC}