|Scientific name:||Viburnum opulus L.|
|Swedish name:||Olvon, skogsolvon, ugglerönn, ulvtry; snöbollsbuske|
|German name:||Gewöhnlicher Schneeball|
|Nederlandse naam:||Gelderse roos|
|English name:||Guelder Rose, Water Elder, European Cranberrybush, Cramp Bark, Snowball Tree|
|Family:||Caprifoliaceae, Honeysuckle family, Kaprifolväxter|
|Life form:||Deciduous shrub|
|Stems:||The bark on young twigs is smooth and gray to tan-brown while the bark on older stems is light gray-brown with irregular cracks. The branches and twigs are bare, winter buds are slender and covered with two bud scales.|
|Leaves:||Opposite, simple, palmately 3-lobed, dark green, strongly to lightly toothed, 3 to 13 cm long, 4 to 12 cm wide, and hairy beneath|
|Flowers:||Hermaphrodite, White, corymbs 4-11 cm diameter at the top of the stems; each corymb comprises a ring of outer sterile flowers 1.5-2 cm diameter with conspicuous petals, surrounding a center of small (5 mm), fertile flowers|
|Flowering Period:||June, July|
|Fruits:||Round red drupe 7-10 mm diameter, containing a single seed.|
Derivation of the botanical name:
Viburnum,a classical Latin name for one species of this genus
opulus, refers to latin opulus for Acer campestre, Field Maple; resembling the guelder-rose.
'Guelder Rose' supposedly first originated in the Dutch province of Gelderland.