Maclurodendron
Encyclopedia
Maclurodendron is a plant genus
from the family Rutaceae
. It was first described in 1982 by Thomas Gordon Hartley
.
It consists of six evergreen tree
species in particular native to Vietnam
, China
, Sabah
, Peninsular Malaysia
, and Sarawak
. They are dioecious
. The leaves are opposite and the leave blade is 1-foliolate. The inflorescence
s can be axillary, thyrsoid or racemose. The four sepal
s are connated on the basis. The four petal
s are imbricated in the bud
. The eight stamen
s are distinct. The opposite sepals are almost as long as the petals which are in male and in female flowers.
Maclurodendron obovatum, Maclurodendron oligophlebium, and Maclurodendron porteri were formerly classified by Joseph Dalton Hooker
and Elmer Drew Merrill
into the genus Acronychia
. Maclurodendron pubescens and Maclurodendron parviflorum are listed as vulnerable
in the IUCN Red List
.
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
from the family Rutaceae
Rutaceae
Rutaceae, commonly known as the rue or citrus family, is a family of flowering plants, usually placed in the order Sapindales.Species of the family generally have flowers that divide into four or five parts, usually with strong scents...
. It was first described in 1982 by Thomas Gordon Hartley
Thomas Gordon Hartley
Thomas Gordon Hartley is an American botanist.-Biography:In 1955 Hartley graduated in botany with the academic degree Bachelor of Science at the Wisconsin State Universities. In 1957 he received his Master of Science and in 1962 his Ph.D...
.
It consists of six evergreen 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...
species in particular native to Vietnam
Vietnam
Vietnam – sometimes spelled Viet Nam , officially the Socialist Republic of Vietnam – is the easternmost country on the Indochina Peninsula in Southeast Asia. It is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, and the South China Sea –...
, China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...
, Sabah
Sabah
Sabah is one of 13 member states of Malaysia. It is located on the northern portion of the island of Borneo. It is the second largest state in the country after Sarawak, which it borders on its southwest. It also shares a border with the province of East Kalimantan of Indonesia in the south...
, Peninsular Malaysia
Peninsular Malaysia
Peninsular Malaysia , also known as West Malaysia , is the part of Malaysia which lies on the Malay Peninsula. Its area is . It shares a land border with Thailand in the north. To the south is the island of Singapore. Across the Strait of Malacca to the west lies the island of Sumatra...
, and Sarawak
Sarawak
Sarawak is one of two Malaysian states on the island of Borneo. Known as Bumi Kenyalang , Sarawak is situated on the north-west of the island. It is the largest state in Malaysia followed by Sabah, the second largest state located to the North- East.The administrative capital is Kuching, which...
. They are dioecious
Dioecious
Dioecy is the property of a group of biological organisms that have males and females, but not members that have organs of both sexes at the same time. I.e., those whose individual members can usually produce only one type of gamete; each individual organism is thus distinctly female or male...
. The leaves are opposite and the leave blade is 1-foliolate. 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...
s can be axillary, thyrsoid or racemose. The four sepal
Sepal
A sepal is a part of the flower of angiosperms . Collectively the sepals form the calyx, which is the outermost whorl of parts that form a flower. Usually green, sepals have the typical function of protecting the petals when the flower is in bud...
s are connated on the basis. The four petal
Petal
Petals are modified leaves that surround the reproductive parts of flowers. They often are brightly colored or unusually shaped to attract pollinators. Together, all of the petals of a flower are called a corolla. Petals are usually accompanied by another set of special leaves called sepals lying...
s are imbricated in the bud
Bud
In botany, a bud is an undeveloped or embryonic shoot and normally occurs in the axil of a leaf or at the tip of the stem. Once formed, a bud may remain for some time in a dormant condition, or it may form a shoot immediately. Buds may be specialized to develop flowers or short shoots, or may have...
. The eight stamen
Stamen
The stamen is the pollen producing reproductive organ of a flower...
s are distinct. The opposite sepals are almost as long as the petals which are in male and in female flowers.
Maclurodendron Species
- Maclurodendron magnificum
- Maclurodendron obovatum
- Maclurodendron oligophlebium
- Maclurodendron parviflorumMaclurodendron parviflorumMaclurodendron parviflorum is a species of plant in the Rutaceae family. It is endemic to Malaysia.-Source:* World Conservation Monitoring Centre 1998. . Downloaded on 22 August 2007....
- Maclurodendron porteri
- Maclurodendron pubescensMaclurodendron pubescensMaclurodendron pubescens is a species of plant in the Rutaceae family. It is endemic to Malaysia.-Source:* World Conservation Monitoring Centre 1998. . Downloaded on 22 August 2007....
Maclurodendron obovatum, Maclurodendron oligophlebium, and Maclurodendron porteri were formerly classified by Joseph Dalton Hooker
Joseph Dalton Hooker
Sir 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...
and Elmer Drew Merrill
Elmer Drew Merrill
Elmer Drew Merrill was an American botanist, specializing in the flora of the Asia-Pacific region.He was born in East Auburn, Maine, and attended the University of Maine where he received a B.S. in 1898...
into the genus Acronychia
Acronychia
Acronychia is a genus of 44 species of plants, mainly shrubs, in the rue family Rutaceae. They have a broad distribution covering China, Southeast Asia, India, Malaysia, Indonesia, Australia and the islands of the western Pacific Ocean....
. Maclurodendron pubescens and Maclurodendron parviflorum are listed as vulnerable
Vulnerable species
On 30 January 2010, the IUCN Red List of Threatened Species identified 9694 Vulnerable species, subspecies and varieties, stocks and sub-populations.-References:...
in the IUCN Red List
IUCN Red List
The IUCN Red List of Threatened Species , founded in 1963, is the world's most comprehensive inventory of the global conservation status of biological species. The International Union for Conservation of Nature is the world's main authority on the conservation status of species...
.
