Nestegis
Encyclopedia
Nestegis is a genus of flowering plant
in the olive
family, Oleaceae
. There are a small number of species in the genus: three species are endemic to New Zealand
, one can be found on New Zealand and Norfolk Island
, another is restricted to Hawaii
, one in Australia
. The name Nestegis derives from the Greek
prefix ne- (not) and stegasma (a cover), in allusion to the lack of a corolla in the type species
, Nestegis apetala
.
The related genus Osmanthus
is sometimes included here.
tree
s or shrub
s. The leaves
are opposite, simple, entire, and coriaceous. The inflorescence
is axillary, decussate
, sometimes terminal and somewhat paniculate
. The flower
s are either bisexual
or functionally unisexual. The corolla is either absent or four-lobed with a short tube. There are two or four stamen
s. The ovary
is shaped like a flask. The fruit
is a drupe
containing a single seed
.
Flowering plant
The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...
in the olive
Olive
The olive , Olea europaea), is a species of a small tree in the family Oleaceae, native to the coastal areas of the eastern Mediterranean Basin as well as northern Iran at the south end of the Caspian Sea.Its fruit, also called the olive, is of major agricultural importance in the...
family, Oleaceae
Oleaceae
Oleaceae are a family containing 24 extant genera and around 600 species of mesophytic shrubs, trees and occasionally vines. As shrubs, members of this family may be twine climbers, or scramblers.-Leaves:...
. There are a small number of species in the genus: three species are endemic to New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...
, one can be found on New Zealand and Norfolk Island
Norfolk Island
Norfolk Island is a small island in the Pacific Ocean located between Australia, New Zealand and New Caledonia. The island is part of the Commonwealth of Australia, but it enjoys a large degree of self-governance...
, another is restricted to Hawaii
Hawaii
Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...
, one in Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...
. The name Nestegis derives from the Greek
Greek language
Greek is an independent branch of the Indo-European family of languages. Native to the southern Balkans, it has the longest documented history of any Indo-European language, spanning 34 centuries of written records. Its writing system has been the Greek alphabet for the majority of its history;...
prefix ne- (not) and stegasma (a cover), in allusion to the lack of a corolla in the type species
Type species
In biological nomenclature, a type species is both a concept and a practical system which is used in the classification and nomenclature of animals and plants. The value of a "type species" lies in the fact that it makes clear what is meant by a particular genus name. A type species is the species...
, Nestegis apetala
Nestegis apetala
Nestegis apetala is a small tree native to northern New Zealand and to Norfolk Island. The common names in New Zealand are Coastal maire or Broad-leaved maire. On Norfolk Island, the common name is Ironwood. The species name apetala refers to the lack of petals on the flowers.-Distribution:In New...
.
The related genus Osmanthus
Osmanthus
Osmanthus is a genus of about 30 species of flowering plants in the family Oleaceae, mostly native to warm temperate Asia but one species occurring in North America . It is sometimes included in Nestegis.They range in size from shrubs to small trees, 2-12 m tall...
is sometimes included here.
Description
Nestegis species are evergreenEvergreen
In botany, an evergreen plant is a plant that has leaves in all seasons. This contrasts with deciduous plants, which completely lose their foliage during the winter or dry season.There are many different kinds of evergreen plants, both trees and shrubs...
tree
Tree
A tree is a perennial woody plant. It is most often defined as a woody plant that has many secondary branches supported clear of the ground on a single main stem or trunk with clear apical dominance. A minimum height specification at maturity is cited by some authors, varying from 3 m to...
s or shrub
Shrub
A shrub or bush is distinguished from a tree by its multiple stems and shorter height, usually under 5–6 m tall. A large number of plants may become either shrubs or trees, depending on the growing conditions they experience...
s. The leaves
Leaf
A leaf is an organ of a vascular plant, as defined in botanical terms, and in particular in plant morphology. Foliage is a mass noun that refers to leaves as a feature of plants....
are opposite, simple, entire, and coriaceous. The inflorescence
Inflorescence
An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Strictly, it is the part of the shoot of seed plants where flowers are formed and which is accordingly modified...
is axillary, decussate
Phyllotaxis
In botany, phyllotaxis or phyllotaxy is the arrangement of leaves on a plant stem .- Pattern structure :...
, sometimes terminal and somewhat paniculate
Panicle
A panicle is a compound raceme, a loose, much-branched indeterminate inflorescence with pedicellate flowers attached along the secondary branches; in other words, a branched cluster of flowers in which the branches are racemes....
. The flower
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants . The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs...
s are either bisexual
Plant sexuality
Plant sexuality covers the wide variety of sexual reproduction systems found across the plant kingdom. This article describes morphological aspects of sexual reproduction of plants....
or functionally unisexual. The corolla is either absent or four-lobed with a short tube. There are two or four stamen
Stamen
The stamen is the pollen producing reproductive organ of a flower...
s. The ovary
Ovary (plants)
In the flowering plants, an ovary is a part of the female reproductive organ of the flower or gynoecium. Specifically, it is the part of the pistil which holds the ovule and is located above or below or at the point of connection with the base of the petals and sepals...
is shaped like a flask. The fruit
Fruit
In broad terms, a fruit is a structure of a plant that contains its seeds.The term has different meanings dependent on context. In non-technical usage, such as food preparation, fruit normally means the fleshy seed-associated structures of certain plants that are sweet and edible in the raw state,...
is a drupe
Drupe
In botany, a drupe is a fruit in which an outer fleshy part surrounds a shell of hardened endocarp with a seed inside. These fruits develop from a single carpel, and mostly from flowers with superior ovaries...
containing a single seed
Seed
A seed is a small embryonic plant enclosed in a covering called the seed coat, usually with some stored food. It is the product of the ripened ovule of gymnosperm and angiosperm plants which occurs after fertilization and some growth within the mother plant...
.
Species
- Nestegis apetalaNestegis apetalaNestegis apetala is a small tree native to northern New Zealand and to Norfolk Island. The common names in New Zealand are Coastal maire or Broad-leaved maire. On Norfolk Island, the common name is Ironwood. The species name apetala refers to the lack of petals on the flowers.-Distribution:In New...
(VahlMartin VahlMartin Henrichsen Vahl was a Danish-Norwegian botanist and zoologist.He studied botany in Copenhagen and in Uppsala under Carolus Linnaeus. He edited Flora Danica fasc. XVI-XXI , Symbolæ Botanicæ I-III , Eclogæ Americanæ I-IV and Enumeratio Plantarum I-II...
) L.A.S.Johnson - Coastal maire or Broad-leaved maire (Norfolk IslandNorfolk IslandNorfolk Island is a small island in the Pacific Ocean located between Australia, New Zealand and New Caledonia. The island is part of the Commonwealth of Australia, but it enjoys a large degree of self-governance...
, New ZealandNew ZealandNew Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...
) - Nestegis cunninghamii (Hook.f.Joseph Dalton HookerSir Joseph Dalton Hooker OM, GCSI, CB, MD, FRS was one of the greatest British botanists and explorers of the 19th century. Hooker was a founder of geographical botany, and Charles Darwin's closest friend...
) L.A.S.JohnsonLawrence Alexander Sidney JohnsonLawrence Alexander Sidney Johnson, known as Lawrie Johnson, was an Australian taxonomic botanist. He worked at the Royal Botanic Gardens, Sydney, for the whole of his professional career, as a botanist , Director and Honorary Research Associate .Alone or in collaboration with colleagues, he...
- Black maire (New Zealand) - Nestegis lanceolata - White maire (New Zealand)
- Nestegis montana - Narrow-leaved maire (New Zealand)
- Nestegis ligustrinaNestegis ligustrinaNestegis ligustrina, known as The Privet Mock Olive or Silkwood, is a plant in the olive family, found in south eastern Australia. Growing in and near rainforests south of Monga National Park, and into Victoria and the island state of Tasmania...
- Privet Mock Olive (Australia) - Nestegis sandwicensisNestegis sandwicensisNestegis sandwicensis, commonly known as Olopua, is a species of flowering tree in the olive family, Oleaceae, that is endemic to Hawaii. It is found on all major islands at elevations of in coastal mesic and mixed mesic forests, and, especially, dry forests...
(A.GrayAsa Gray-References:*Asa Gray. Dictionary of American Biography. American Council of Learned Societies, 1928–1936.*Asa Gray. Encyclopedia of World Biography, 2nd ed. 17 Vols. Gale Research, 1998.*Asa Gray. Plant Sciences. 4 vols. Macmillan Reference USA, 2001....
) O.Deg.Otto DegenerOtto Degener was a botanist and conservationist who specialized in identifying plants of the Hawaiian Islands.-Life:Otto Degener was born May 13, 1899 in East Orange, New Jersey. Degener graduated from the Massachusetts Agricultural College...
, I.Deg. & L.A.S.JohnsonLawrence Alexander Sidney JohnsonLawrence Alexander Sidney Johnson, known as Lawrie Johnson, was an Australian taxonomic botanist. He worked at the Royal Botanic Gardens, Sydney, for the whole of his professional career, as a botanist , Director and Honorary Research Associate .Alone or in collaboration with colleagues, he...
- Olopua (HawaiiHawaiiHawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...
)