KEY TO THE NEW CALEDONIAN MYuriuM TAXA (MODIFIED FROM MASCHKE 1976)

1. Leaves shorter, up to 1.5 mm long, not plicate, evenly five ranked in the branch upper parts .......................... .......................................................................................................................................... M. quinquefarium

— Leaves larger, up to 5 mm long, not plicate, unevenly set along the branches ............................................... 2

2. Leaves 4-5 mm long, gradually tapered, usually dark red; upper margins more or less bluntly toothed ............ ....................................................................................................................... M. rufescens subsp. purpuratum

— Leaves usually less than 3 mm long, sharply narrowed in a subulate point, variously coloured; upper margins sharply toothed .................................................................................................... M. rufescens subsp. rufescens