Libertia cranwelliae, Cranwells Iris or Cranwells Mikoikoi is endemic to the North Island.  It is  found in the East Cape from near Hicks Bay, south to the Kopuapounamu valley in coastal forest on cliff faces, in seepages, on stream and river banks. Plants consisting of leafy fans crowded or emerging at intervals from far-spreading horizontal  creeping plant stems or runners that takes root at points along its length to form new plants.Leaves are 150–900 mm long and  5–11 mm wide, and are inclined to turn yellow where exposed to full sun. Flowers and fruits do not reach top of leaves. Flower buds are sometimes yellowish or brown, opening to white flowers that are 20–35 mm  in diameter, from September - November. Flowers are followed by large seed capsules (fruit) from January - December, that are up to 20 mm long, and  barrel-shaped, ripening from green to yellow-orange to black or grey-black, sometimes splitting slightly. Seeds dispersed when capsule disintegrates. It is evergreen and very hardy to sun or semi shade, and will tolerate drier sites but prefers a free draining site. This nationally critical plant was rediscovered in 2006, in the wild by Graeme Atkins at one site near East Cape where there were 30 plants found to be growing in coastal forest. This site is threatened by weeds, goats, cattle and red deer. Libertia cranwelliae has not been rediscovered at its former locations at the Awatere River and Kopuapounamu Valley.