Carex gibba is a species of true sedge in the family Cyperaceae, native to Vietnam, southern and central China, Manchuria, the Korean Peninsula, and Japan.[1] It is basal in its subgenus Vignea.[2]
^Starr, Julian R.; Janzen, Francesco H.; Ford, Bruce A. (2015). "Three new, early diverging Carex (Cariceae, Cyperaceae) lineages from East and Southeast Asia with important evolutionary and biogeographic implications". Molecular Phylogenetics and Evolution. 88: 105–120. doi:10.1016/j.ympev.2015.04.001. PMID25858558.