Libertia grandiflora

Libertia grandiflora, commonly known as mikoikoi and the New Zealand iris, is a species of flowering plant in the family Iridaceae. It is endemic to New Zealand; its range covers the North Island. Although specimens from the South Island were previously classified under L. grandiflora, they have since been reassigned to a newly established taxon. L. grandiflora is commonly found in lowland to montane areas with partial shade; it inhabits bluffs, cliffs, ridgelines, slopes, and the banks or terraces of streams. A perennial herb, it reaches 900 mm in height with leaves reaching 1400 mm in length. It was first described by the botanist Robert Sweet in 1830. It gets its specific epithet, grandiflora, meaning 'large flowered'....read more on Wikipedia.