an ornamental shrub or tree of the genus Laburnum

an ornamental shrub or tree of the genus Laburnum

an ornamental shrub or tree of the genus Laburnum

an ornamental shrub or tree of the genus Laburnum

an ornamental shrub or tree of the genus Laburnum

an ornamental shrub or tree of the genus Laburnum

having carbon atoms linked in open chains

having carbon atoms linked in open chains

having carbon atoms linked in open chains

fruiting body of some rust fungi bearing chains of aeciospores