The Oxalis corniculata group

Abstract

The Oxalis corniculata L. group has been treated in various ways in New Zealand and elsewhere. The taxa within it are difficult to distinguish with conventional dichotomous keys because of overlapping characters. Yet they are seen to be distinct, especially when whole plants are studied. To overcome this problem of identification, a table of what seem to be the best diagnostic morphological characters is given. The historical treatment of the group in New Zealand is summarised. © 2009 Taylor & Francis Group, LLC.