However , by this time confusion over the true identity of C oxyacantha was so great that Byatt proposed that the name should be formally rejected as ambiguous , and this proposal was accepted by the International Botanical Congress .
The name continues to be used informally .
However , by this time confusion over the true identity of C oxyacantha was so great that Byatt proposed that the name should be formally rejected as ambiguous , and this proposal was accepted by the International Botanical Congress , although the name continues to be used informally .