. . . . . . . . . "Carduus tenuiflorus" . . "Silybum marianum" . . "Colin Meurk. 2016. Carduus tenuiflorus associated species with names lookup Silybum marianum. iNaturalist.org. Accessed at <https://www.inaturalist.org/observations/2579434> on 05 Apr 2018." . . . . "http://iNaturalist.org is a place where you can record what you see in nature, meet other nature lovers, and learn about the natural world." .