Kingdom: Plantae
(unranked): Angiosperms
(unranked): Monocots
(unranked): Commelinids
Order: Commelinales
Family: Philydraceae
Genus: Helmholtzia
Species: H. glaberrima
Binomial name: Helmholtzia glaberrima
Common name: Stream Lily, Flax Lily

Helmholtzia glaberrima is a rare rhizomatous perennial plant which is native to New South Wales and Queensland in Australia. H. glaberrima has fan-like tuffs of long, leathery, dark-green sword-shaped leaves. It forms clumps that are up to 1.5 metres high from branched rhizomes. The leaves are up to 1.5m long and are up to 7 cm wide.
The tall flower spikes (70 cm long) appear in the summer and are covered in creamy white to pale pink flowers. The fruit is a capsule up to 7 mm long.

Photographed at Pukekura Park, New Plymouth.
Helmholtzia glaberrima Stream lily .JPG

Helmholtzia glaberrima Stream lily -005.JPG

Helmholtzia glaberrima Stream lily -001.JPG

Helmholtzia glaberrima Stream lily -002.JPG

The top surface of the leaves.
Helmholtzia glaberrima Stream lily -003.JPG

The undersurface of a leaf.
Helmholtzia glaberrima Stream lily -004.JPG

Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0/