''Arthropodium cirratum'' (rengarenga, renga lily, New Zealand rock lily, or maikaika) is a species of

herbaceous Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition of t ...

perennial plant A perennial plant or simply perennial is a plant that lives more than two years. The term ('' per-'' + '' -ennial'', "through the years") is often used to differentiate a plant from shorter-lived annuals and biennials. The term is also wide ...

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found else ...

New Zealand New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island count ...

, where it may once have been farmed. It is used for medicine as well as food, and has symbolic importance in traditional

Māori culture Māori culture () is the customs, cultural practices, and beliefs of the indigenous Māori people of New Zealand. It originated from, and is still part of, Eastern Polynesian culture. Māori culture forms a distinctive part of New Zealand cu ...

. The Māori name ''rengarenga'' is a reduplication of

Proto-Polynesian Proto-Polynesian (abbreviated PPn) is the hypothetical proto-language from which all the modern Polynesian languages descend. It is a daughter language of the Proto-Austronesian language. Historical linguists have reconstructed the language using ...

*''renga'' which in other related languages corresponds to

turmeric Turmeric () is a flowering plant, ''Curcuma longa'' (), of the ginger family, Zingiberaceae, the rhizomes of which are used in cooking. The plant is a perennial, rhizomatous, herbaceous plant native to the Indian subcontinent and Southeast ...

, especially its powdered form (see sm, lega, haw, lena); this association is due to both plants' similar stem and root characteristics.

Description

The

leaves A leaf (plural, : leaves) is any of the principal appendages of a vascular plant plant stem, stem, usually borne laterally aboveground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", wh ...

are long and wide. The flower stalk often reaches one metre, and bears many white six-petalled

flower A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants (plants of the division Angiospermae). The biological function of a flower is to facilitate reproduction, usually by providing a mechani ...

s, in groups of two or three, each about across. The

stamen The stamen (plural ''stamina'' or ''stamens'') is the pollen-producing reproductive organ of a flower. Collectively the stamens form the androecium., p. 10 Morphology and terminology A stamen typically consists of a stalk called the filame ...

s are tricoloured - purple and white, with yellow at the curled end. The roots are wide. Rengarenga flower (Arthropodium cirrhatum)

Taxonomy

It was first described in 1786 as ''Anthericum cirrhatum'' by

Georg Forster Johann George Adam Forster, also known as Georg Forster (, 27 November 1754 – 10 January 1794), was a German naturalist, ethnologist, travel writer, journalist and revolutionary. At an early age, he accompanied his father, Johann Reinhold ...

. In 1822, Robert Brown assigned it to the genus, ''Arthropodium'', resulting in the name, ''Arthropodium cirrhatum (''now ''A. cirratum.)''

Distribution and habitat

It occurs naturally north of

Greymouth Greymouth () (Māori: ''Māwhera'') is the largest town in the West Coast region in the South Island of New Zealand, and the seat of the Grey District Council. The population of the whole Grey District is , which accounts for % of the West Coas ...

and Kaikoura near the sea and, as the name suggests, usually on rocks.

Cultivation and uses

It is often grown as an ornamental plant. The rhizomes are edible when cooked and can be found throughout the year. The rhizomes were once eaten by the

Māori Māori or Maori can refer to: Relating to the Māori people * Māori people of New Zealand, or members of that group * Māori language, the language of the Māori people of New Zealand * Māori culture * Cook Islanders, the Māori people of the C ...

after being cooked in a hāngi.

William Colenso William Colenso (17 November 1811 – 10 February 1899) FRS was a Cornish Christian missionary to New Zealand, and also a printer, botanist, explorer and politician. He attended the signing of the Treaty of Waitangi and later wrote an accou ...

believed, for two reasons, that this plant was once cultivated by them: firstly, the plant grows much larger under cultivation than it usually does in the wild; and secondly it was often found near old deserted Māori homes and plantations. However, he lists it as only fourteenth in importance, in his list of eighteen kinds of wild vegetable food used by the

References

cirratum Root vegetables Crops originating from New Zealand {{NewZealand-plant-stub