Piper excelsum

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Kawakawa
Kawakawa877.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Magnoliids
Order: Piperales
Family: Piperaceae
Genus: Piper
Species:
P. excelsum
Binomial name
Piper excelsum
Synonyms [1]

Macropiper excelsum(G.Forst.) Miq.
Methysticum excelsum(G.Forst.) A.Lyons

Contents

Piper excelsum (formerly known as Macropiper excelsum) of the pepper family (Piperaceae) and commonly known as kawakawa, is a small tree of which the subspecies P. excelsum subsp. excelsum is endemic to New Zealand; [3] the subspecies P. e. subsp. psittacorum is found on Lord Howe Island, Norfolk Island and the Kermadec Islands.

Description

Kawakawa is found throughout the North Island, and as far south as Ōkārito (43.20 °S) on the West Coast, and Banks Peninsula (43.5 °S) on the east coast of the South Island. The tree grows to 20 feet (6.1 m). [3]

The leaves are often covered with holes caused by the caterpillar of the kawakawa looper moth (Cleora scriptaria). The images depict the variety majus which has larger and more glossy leaves than P. excelsum.

Leaves

Kawakawa leaves are about 5–10 cm long by 6–12 cm wide; they are opposite to each other, broadly rounded with a short drawn-out tip and are heart-shaped at their bases. The leaves are deep green in colour if growing in the forest, but may be yellowish-green in more open situations.

Flowers

The flowers are produced on greenish, erect spikes 2.5–7.5 cm long. Kawakawa flowers are quite minute and very closely placed around the spike. After pollination the flowers gradually swell and become fleshy to form small, berry-like fruits that are yellow to bright orange.

Berries

Each berry cluster is the size of a small finger. Ripening period is January and February. These fruits are favoured by kererū or New Zealand pigeon (Hemiphaga novaeseelandiae) and tūī (Prosthemadera novaeseelandiae).

Uses

Kawakawa was used as a traditional medicinal plant of the Māori. [4] An infusion made from the leaves or roots was used or its leaves were chewed to relieve toothache, and wounds were often bound in kawakawa leaves. The sweet edible yellow berries (most often found in summer on female trees) of the plant were eaten as a diuretic. Traditionally, leaves with holes that had been eaten by caterpillars were considered the best to use. [5]

In cultural contexts, host people of a marae wave leaves of kawakawa to welcome guests. At a tangi, both hosts and guests may wear wreaths of kawakawa on the head as a sign of mourning. [6]

Early European settlers to New Zealand used kawakawa in teas, and experimented using it as a flavouring agent in beer. [5] It is commonly grown as an ornamental plant in gardens. [7] Kawakawa essential oil contains myristicin, a deliriant when consumed in high concentrations. [5]

Relationship with kava

Kawakawa is sometimes called "Māori kava" and is often confused with the kava plant (Piper methysticum). While the two plants look similar and have similar names, they are different, albeit related, species.

Kava is a traditional plant and beverage of the South Pacific. The roots of the plant are used to produce a drink with medicinal, sedative, anesthetic, euphoriant, and entheogenic properties. [8] It is most likely not a coincidence that this plant has a similar name to kawakawa. One source stated: "In New Zealand, where the climate is too cold for kava, the Māori gave the name kawa-kawa to another Piperaceae, P. excelsum, in memory of the kava plants they undoubtedly brought with them and unsuccessfully attempted to cultivate. The Māori word kawa also means "ceremonial protocol", recalling the stylised consumption of the drug typical of Polynesian societies." [8]

Common name

The name kawakawa comes from the Māori language, where it refers to the bitter taste of the leaves, from kawa or bitter. [lower-alpha 1]

See also

Notes

  1. It has also been surmised that when Māori first came to New Zealand, they named the plant 'Kawakawa' because they recognised that the plant was a close relative of Piper methysticum, the plant from which kava is made in the tropical Pacific. However, given that Piper species also occur in tropical Polynesia, it is more likely they simply applied the name of those plants to the New Zealand variety. In the Cook Islands and the Marquesas for instance, P.latifolium is known as 'Kavakava-atua'; in Samoa it is called 'Ava'ava-aitu'. P. latifolium is very similar in appearance to the New Zealand species, and is also used in traditional medicine in the Cook Islands.

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References

  1. 1 2 "Piper excelsum G.Forst. | Plants of the World Online | Kew Science". Plants of the World Online. Retrieved 26 November 2019.
  2. Forster, G. (1786) Fl. Ins. Austr.: 5
  3. 1 2 Carlquist, Dr. Sherwin (1974). Island Biology. New York & London: Univ. Columbia Press. p. 409.
  4. "Macropiper excelsum. Kawakawa" Archived 2016-08-11 at the Wayback Machine , Ngā Tipu Whakaoranga - Māori Plant Use Database, Landcareresearch.co.nz
  5. 1 2 3 Vennell, Robert (2019). The Meaning of Trees. Auckland: HarperCollins Publishers Ltd. pp. 24–27. ISBN   978-1-77554-130-1. LCCN   2019403535. OCLC   1088638115. Wikidata   Q118646408.
  6. "Tangihanga – death customs", Te Ara
  7. New Zealand Plant Conservation Network: Piper excelsum subsp. excelsum
  8. 1 2 Lebot, Vincent; Merlin, Mark; Lindstrom, Lamont (1 February 1997). Kava: The Pacific Elixir: The Definitive Guide to Its Ethnobotany, History, and Chemistry. Inner Traditions / Bear & Co. ISBN   9780892817269.