Salicornia rubra, the Rocky Mountain glasswort, is a species of flowering plant in the family Amaranthaceae.[1] It is native to colder or higher areas of North America; the Yukon, Nunavut, British Columbia, Alberta, Saskatchewan, Manitoba, and Ontario in Canada, and the western and north-central United States. It has been introduced to Quebec and Michigan, and has gone extinct in Illinois.[2] A halophyte, it is one of the most salt-tolerant plants of North America.[3]