Oxera brevicalyx is a slender liana endemic to New Caledonia, with a scattered distribution in the northwest of Grande Terre. It is found in scrubland from Poya to Koumac, on soils derived from ultramafic substrate up to 100 m asl. Its area of occupancy (AOO) and extent of occurrence (EOO) equal 60 and 622 km², respectively, and it is known to occur in four locations.
