Berkeley Sedge got its name from an unlabeled, neglected plant in a Berkeley nursery It is oddly disconcerting when a singular plant, long believed to be a California native, turns out to hail from some other part of the world. One such plant is Berkeley sedge.  This bright green grasslike plant was formerly known and grown as Carex tumulicola, a sedge native to California and other parts of the Pacific Coast. Some years ago Berkeley sedge was discovered to be a form of Carex divulsa, which is native to Europe and western Asia.