Laing R. M., Blackwell E. W. 1964 (7th edition, revised). Plants of New Zealand. Whitcombe and Tombs.
p.106-110, uses of flax. Chilblains - poultice of roasted and macerated roots. Soft part of leaf base placed over wounds to stop bleeding. However, some bushmen say juice of leaf acts as a poison to cut. Cuts obtained in handling of leaves in flaxmill usually fester. p.110, description of Chatham Island variety.
Plants of New Zealand