Single Record

Species: Euphorbia marginata [Dichrophyllum marginatum] [Lepadinia marginata]

Comments: For snow-on-the-mountain there are two Watershed vouchers, both along highways: Rio Grande Co, Hwy 149, ca 2.5 air mi N of South Fork (2003); Costilla Co, by Hwy 160, near La Veta pass (1998). Four iNaturalist photorecords add a third location, in and around the town of San Luis (Costilla Co), for instance from from around the Shrine of the Stations of the Cross (2021, iNaturalist observation #90710518) and 4 km northwest of the town (2024, iNaturalist observation #237455666). In the USA, Euphorbia marginata is predominantly a Plains plant, perhaps adventive elsewhere. Yet Wyoming, Montana, Colorado, and New Mexico all show a few records from their higher-elevation western regions. There are scattered records following the Rio Grande drainage through New Mexico and down past the Big Bend country of Texas. Incidentally, although in some parts of the USA it is considered "invasive," it is a native plant. The term "noxious," however, does accurately apply to E. marginata, since contact with it irritates the skin and eyes of some people. Certainly don't eat it.