[snoh-on-th
uh-moun-tn, -awn-] 
| a spurge, Euphorbia marginata, of the western U.S., having leaves with white margins and white petallike bracts. |
| snow-on-the-moun·tain (snō'ŏn-thə-moun'tən, -ôn-) n. A widely cultivated plant (Euphorbia marginata) of the central United States, having white-margined leaves and showy white bracts. Also called ghostweed. |
snow-on-the-mountain
(Euphorbia marginata), succulent plant of the spurge family (Euphorbiaceae), native to the central plains of the United States. The plants, which grow to a height of 60 cm (2 feet), have long, oval, light green foliage, with white-margined leaves near the top, where several white whorls of bracts (leaflike structures) are clustered. The plant has long been a favourite as a garden annual and in flower arrangements, but some people are allergic to its white latex sap.
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