|Jack Viburnum – Viburnum X jackii
Family Adoxaceae. Viburnum is a genus of about 150-175 species of shrubs or small trees that were
previously included in the family Caprifoliaceae
|Viburnum is a genus of about 150-175 species of shrubs or small trees that were previously included in the family Caprifoliaceae. Genetic tests by the Angiosperm Phylogeny Group showed that they are correctly classified in the family Adoxaceae. They are native throughout the temperate Northern Hemisphere, with a few species extending into tropical montane regions in South America and southeast Asia. In Africa, the genus is confined to the Atlas Mountains.
The leaves are opposite, simple, and entire, toothed or lobed; cool temperate species are deciduous, while most of the warm temperate species are evergreen. Some species are densely hairy on the shoots and leaves, with star-shaped hairs. The flowers are produced in corymbs 5-15 cm across, each flower white to cream or pink, small, 3-5 mm across, with five petals, strongly fragrant in some species. The gynoecium has 3 connate carpels with the nectary on top of the gynoecium. Some species also have a fringe of large, showy sterile flowers round the perimeter of the corymb to act as a pollinator target.
This specimen was started from a cutting 25 years ago.
Most viburnums have either white or pinkish flowers which are sometimes fragrant. The flowers themselves come in three major types: Flat clusters of florets, Flat umbels outlined with larger flowers, resembling lacecap hydrangeas, and dome-shaped, snowball like clusters. Viburnums have long been one of the most popular flowering landscape shrubs.
There are over 150 species of Viburnum. You can find a variety to suit any garden need: wet or dry, sun or shade, natural or formal, shrub or tree, native or exotic, USDA Zones 2-9. Bloom times span early spring through June and are followed by attractive fruit and outstanding fall foliage.
|Tree Encyclopedia / North American Insects & Spiders is dedicated to providing scientific and educational resources for our users through use of large images and macro photographs of flora and fauna.|