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Avicennia

 
Avicennia

 
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Avicennia
 
 
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Avicennia is a genus
Genus

A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species....
 of mangrove
Mangrove

Mangroves are trees and shrubs that grow in saline water coastal habitats in the tropics and subtropics. The word is used in at least three senses: most broadly to refer to the habitat and entire plant assemblage or mangal, for which the terms mangrove swamp and mangrove forest are also used, to refer to all trees and...
 tree
TREE

TREE was a Boston hardcore punk band formed in the summer of 1990. They were active in the Boston music scene until disbanding in 2002....
. As with other mangroves, it occurs in the intertidal zones of estuarine areas, and has the characteristic aerial root
Aerial root

"Pneumatophore" redirects here. It is also a name for the air bladder of the Portuguese Man o' War.Aerial roots are roots above the ground....
s of mangroves. Species of Avicennia occur worldwide south of the Tropic of Cancer
Tropic of Cancer

The Tropic of Cancer, or Northern tropic, is one of five major degree measures or major circle of latitude that mark maps of the Earth. It is the northernmost latitude at which the Sun can appear directly overhead at noon....
.

The taxonomic placement of Avicennia is contentious. In some classifications it has been placed in the family Verbenaceae
Verbenaceae

The verbena family or vervain vamily, Verbenaceae, is a family of mainly tropical plants. They are trees, shrubs and herbs notable for heads, spikes, or clusters of small flowers, many of which have an aromatic smell....
, but more recently has been placed by some botanists in the monogeneric family Avicenniaceae.






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Avicennia is a genus
Genus

A genus is a low-level taxonomic rank used in the classification of living and fossil organisms. The taxonomic ranks are domain , kingdom , phylum, class , order , family , genus, and species....
 of mangrove
Mangrove

Mangroves are trees and shrubs that grow in saline water coastal habitats in the tropics and subtropics. The word is used in at least three senses: most broadly to refer to the habitat and entire plant assemblage or mangal, for which the terms mangrove swamp and mangrove forest are also used, to refer to all trees and...
 tree
TREE

TREE was a Boston hardcore punk band formed in the summer of 1990. They were active in the Boston music scene until disbanding in 2002....
. As with other mangroves, it occurs in the intertidal zones of estuarine areas, and has the characteristic aerial root
Aerial root

"Pneumatophore" redirects here. It is also a name for the air bladder of the Portuguese Man o' War.Aerial roots are roots above the ground....
s of mangroves. Species of Avicennia occur worldwide south of the Tropic of Cancer
Tropic of Cancer

The Tropic of Cancer, or Northern tropic, is one of five major degree measures or major circle of latitude that mark maps of the Earth. It is the northernmost latitude at which the Sun can appear directly overhead at noon....
.

The taxonomic placement of Avicennia is contentious. In some classifications it has been placed in the family Verbenaceae
Verbenaceae

The verbena family or vervain vamily, Verbenaceae, is a family of mainly tropical plants. They are trees, shrubs and herbs notable for heads, spikes, or clusters of small flowers, many of which have an aromatic smell....
, but more recently has been placed by some botanists in the monogeneric family Avicenniaceae. Recent phylogenetic studies have suggested that Avicennia is derived from within Acanthaceae
Acanthaceae

The family Acanthaceae is a taxon of dicotyledonous flowering plants containing almost 250 genera and about 2500 species.Most are tropical herbs, shrubs, or twining vines; some are epiphytes....
, and the genus is included in that family in the Angiosperm Phylogeny Group
Angiosperm Phylogeny Group

The Angiosperm Phylogeny Group, or APG, refers to two international groups of systematic botany who came together to try to establish a consensus view of the taxonomy of flowering plants that would reflect new knowledge in angiosperm relationships based upon molecular systematics studies....
 system.

Designation of species is made difficult by the great variations in form of Avicennia marina
Avicennia marina

Avicennia marina, commonly known as grey mangrove or white mangrove, is a species of mangrove tree classified in the plant family Acanthaceae ....
. Between eight and ten species are usually recognised, with Avicennia marina further divided into a number of subspecies.

The name Avicennia is named in honour of the Persian
Persian people

Persian identity, at least in terms of language, is traced to the ancient Indo-Iranians , who arrived in parts of Greater Iran circa 2000-1500 BCE....
 physician
Islamic medicine

In the history of medicine, Islamic medicine or Arabic medicine refers to medicine developed in the Islamic Golden Age and written in Arabic language, the lingua franca of the Islamic civilization....
 Avicenna
Avicenna

, known as Abu Ali Sina Balkhi or Ibn Sina and commonly known in English by his Latinized name Avicenna , was a Persian people polymath and the foremost Islamic medicine and Early Islamic philosophy of his time....
.

Species
  • Avicennia alba
    Avicennia alba

    Avicennia alba forms a low, dense bushy crown often branching near the base of the trunk. The shrub does not grow more than 20 m. The dark green leaves, 15 cm long by 5 cm wide, have a silvery gray under leaf and grow in opposites....
  • Avicennia bicolor
  • Avicennia eucalyptifolia
  • Avicennia germinans
    Avicennia germinans

    Avicennia germinans, the black mangrove, plays a key role in the mangrove ecosystem by trapping debris and detritus brought in by tides, and as feeding, breeding, and nursery grounds for many species of shellfish, fish, birds and other wildlife....
  • Avicennia integra
  • Avicennia marina
    Avicennia marina

    Avicennia marina, commonly known as grey mangrove or white mangrove, is a species of mangrove tree classified in the plant family Acanthaceae ....
  • Avicennia nitida
    Avicennia nitida

    Avicennia nitida, commonly known as black mangrove, is a species of mangrove tree classified in the plant family Acanthaceae . This plant grows up in Brazil, specially in Cear? and Pernambuco states; Costa Rica; Panama; and the United States, where is typical of warmer zones....
  • Avicennia officinalis
    Avicennia officinalis

    Avicennia officinalis is a species of mangrove. The young tree forms a low, dense bushy crown. When it matures, it forms a columnar tree up to 15 m and may grow up to 30 m....
  • Avicennia rumphiana
  • Avicennia schaueriana