Reference citation: Erin Faulkner. 2018. Papilio glaucus nectar plant Silphium perfoliatum. iNaturalist.org. Accessed at on 23 Jan 2021.
Source citation: 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.
Reference citation: Ann McKenzie. 2019. Papilio glaucus nectar plant Silphium perfoliatum. iNaturalist.org. Accessed at on 23 Jan 2021.
Source citation: 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.
Reference citation: Barbara Charlton. 2017. Papilio glaucus nectar plant Silphium perfoliatum. iNaturalist.org. Accessed at on 23 Jan 2021.
Source citation: 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.
