Euphorbia marginata (commonly known as snow-on-the-mountain, smoke-on-the-prairie, variegated spurge, or whitemargined spurge) is a small annual in the spurge family.
Snow-on-the-mountain has grey-green leaves along branches and smaller leaves (bracts or cyathophylls) in terminal whorls with edges trimmed with wide white bands, creating, together with the white flowers, the appearance that gives the plant its common names.
Snow-on-the-mountain has also been found to emit large quantities of sulfur gas, mainly in the form of dimethyl sulfide (DMS).[6]
References
^NatureServe (2024). "Euphorbia marginata". Arlington, Virginia. Retrieved 10 April 2024.
^Lewis, Meriwether; Clark, William (1983), Moulton, Gary E. (ed.), The Journals of the Lewis and Clark Expedition, Volume 12: Herbarium of the Lewis and Clark Expedition, University of Nebraska Press, p. 359, ISBN978-0-8032-2931-0