Examples include cocklebur and unicorn plant. For example; "Puccinia xanthii" infects the flowering plant cocklebur ("Xanthium"). Herbaceous plants include reeds, common spike rush, jointleaf rush, fleabane, cocklebur and thorn apple. The common cocklebur ("Xanthium strumarium") is a native of North America. The Cocklebur was the inspiration for a Swiss Engineer named George de Mestral.