''Myoporum wilderi'', commonly known as Cook Islands myoporum or ngaio, is a plant in the figwort

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

Scrophulariaceae The Scrophulariaceae are a family of flowering plants, commonly known as the figwort family. The plants are annual and perennial herbs, as well as shrubs. Flowers have bilateral (zygomorphic) or rarely radial (actinomorphic) symmetry. The Scr ...

and is

endemic Endemism is the state of a species being found only 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 foun ...

to the islands of

Mangaia Mangaia (traditionally known as A'ua'u Enua, which means ''terraced'') is the most southerly of the Cook Islands and the second largest, after Rarotonga. It is a roughly circular island, with an area of , from Rarotonga. Originally heavily popul ...

and

Mitiaro Mitiʻāro, the fourth island in the Cook Islands group, is of volcano, volcanic origin. Standing in water deep it is across at its widest point. Geography Mitiaro, also known as Nukuroa, is part of the Nga-Pu-Toru island group formerly, a vol ...

in the

Cook Islands The Cook Islands is an island country in Polynesia, part of Oceania in the South Pacific Ocean. It consists of 15 islands whose total land area is approximately . The Cook Islands' Exclusive Economic Zone (EEZ) covers of ocean. Avarua is its ...

. It is similar to '' Myoporum stokesii'' and '' Myoporum rimatarense'' which grow on other

Pacific Islands The Pacific islands are a group of islands in the Pacific Ocean. They are further categorized into three major island groups: Melanesia, Micronesia, and Polynesia. Depending on the context, the term ''Pacific Islands'' may refer to one of several ...

. On the island of

Rarotonga Rarotonga is the largest and most populous of the Cook Islands. The island is volcanic, with an area of , and is home to almost 75% of the country's population, with 10,898 of a total population of 15,040. The Parliament of the Cook Islands, Coo ...

it is used to add a scent to

coconut oil Coconut oil (or coconut fat) is an edible oil derived from the kernels, meat, and milk of the coconut palm fruit. Coconut oil is a white solid fat below around , and a clear thin liquid oil at higher temperatures. Unrefined varieties have a disti ...

Description

''Myoporum wilderi'' is a shrub or small tree sometimes growing to a height of with young branches that are flattened or three-sided. The leaves are arranged alternately, are broadly elliptical in shape with a pointed tip and are mostly long and wide. They are the same shiny colour on both surfaces,

glabrous Glabrousness () is the technical term for a lack of hair, down, setae, trichomes, or other such covering. A glabrous surface may be a natural characteristic of all or part of a plant or animal, or be due to loss because of a physical condition, ...

and have a distinct mid-vein. The flowers are borne in groups of up to 6 in the axils of leaves on stalks long and usually have 5 pointed

sepal A sepal () is a part of the flower of angiosperms (flowering plants). Usually green, sepals typically function as protection for the flower in bud, and often as support for the petals when in bloom., p. 106 Etymology The term ''sepalum'' ...

s and 5

petal Petals are modified leaves that form an inner whorl surrounding the reproductive parts of flowers. They are often brightly coloured or unusually shaped to attract pollinators. All of the petals of a flower are collectively known as the ''corol ...

s forming a tube or bell-shape. The tube is long with lobes about the same length. The tube is white with distinct purple spots in the tube and on the inner parts of the lobes. There are four stamens which extend beyond the petal tube. The fruits is an oval shaped

drupe In botany, a drupe (or stone fruit) is a type of fruit in which an outer fleshy part (exocarp, or skin, and mesocarp, or flesh) surrounds a single shell (the ''pip'' (UK), ''pit'' (US), ''stone'', or ''pyrena'') of hardened endocarp with a seed ...

with a distinct point on the end.

Taxonomy

''Myoporum wilderi'' was first formally described in 1933 by

Carl Skottsberg Carl Johan Fredrik Skottsberg (1 December 1880 – 14 June 1963) was a Swedish botanist and explorer of Antarctica. Life Skottsberg was born in Karlshamn on 1 December 1880 the son of Carl Adolf Skottsberg a schoolmaster and his wife, Maria ...

and the description was published in '' Acta Horti Gothoburgensis''. The

specific epithet In Taxonomy (biology), taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin gramm ...

''wilderi'' honours the botanist Gerrit Parmile Wilder.

Distribution and habitat

''Myoporum wilderi'' is only found on Mangaia and Mitiaro.

Uses

On Mangaia, the flowers of this myoporum are used to scent coconut oil. On Rarotonga, the species is cultivated for the same purpose.

References

{{Taxonbar, from=Q17745739 Endemic flora of the Cook Islands Flora of the Cook Islands wilderi Plants described in 1933