amur river asia berry binomial nomenclature biological classification bird caprifoliaceae child china connecticut cultivar deciduous dicotyledon dipsacales endangered species flower flowering plant forest forsythia fruit glyphosate herbicide honeysuckle hydrangea internet invasive species japan korea leaf manchuria massachusetts mongolia monoculture nectar new zealand ornamental plant plant poison primorsky krai richard maack river russia seed seed dispersal shrub syringa vulgaris tennessee understory united states urban area vermont viburnum dentatum viburnum opulus viburnum prunifolium viburnum trilobum weed wikimedia commons wisconsin yunnan