Carex chathamica

{{Short description|Species of flowering plant}}

{{Use New Zealand English|date=September 2024}}

{{Speciesbox

|image = Carex chathamica - Peter de Lange - 28435594.jpeg

|genus = Carex

|species = chathamica

|authority = Petrie

}}

Carex chathamica is a species of sedge in the family Cyperaceae, native to the Chatham Islands of New Zealand.{{cite web |url=http://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:299118-1 |title=Carex chathamica Petrie |author= |date=2017 |website=Plants of the World Online |publisher=Board of Trustees of the Royal Botanic Gardens, Kew |access-date=27 July 2022 }}{{cite web |title=Carex chathamica |url=https://www.rhs.org.uk/plants/155788/i-carex-chathamica-i/details |date=2022 |publisher=The Royal Horticultural Society |accessdate=27 July 2022 |quote=Synonyms; Carex trifida 'Chathamica' }} Grey-backed storm petrels (Garrodia nereis) nest in its tufts.{{cite journal |last1=West |first1=Jillian A. |last2=Nilsson |first2=Ron J. |date=1994 |title=Habitat use and burrow densities of burrow-nesting seabirds on South East Island, Chatham Islands, New Zealand |url=https://www.birdsnz.org.nz/wp-content/uploads/2021/12/Notornis_41_sup_27.pdf |journal=Notornis |volume=41 |issue=supplement |pages=27–37 |access-date=27 July 2022 }}