Aegialitis

Source: Wikipedia, the free encyclopedia.
For other uses, see Aegialitis (disambiguation).

Aegialitis
Aegialitis annulata
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Core eudicots
Order:
Caryophyllales
Family:
Plumbaginaceae
Subfamily:
Staticoideae
Tribe:
Aegialitideae

(
Lincz.) T.H.Peng
Genus:
Aegialitis

R.Br.
Species

Aegialitis annulata
R.Br.
Roxb.

Aegialitis is a genus of two shrubby mangrove species, with one native to Southeast Asia and the other native to Australia and Papua New Guinea.

Description

The two species of the genus are woody mangrove shrubs or small trees that grow up to 2 to 3 m tall. The

leaf margins are entire and have parallel veins.[1]

The

mesocarp.[1]

Unlike other mangrove species, the members of Aegialitis generally do not have aerial roots.[2]

Distribution and habitat

The two species of the genus are native to Southeast Asia and Australia, but their distribution ranges do not overlap. A. annulata is found along the northern coasts of Australia from

Mergui and on the Andaman Islands.[3][4]

The distribution of these two species with respect to the other members of the Plumbaginaceae is suggestive of the evolutionary history and phylogenetic placement of Aegialitis. Several authors have discovered evidence for three distinct southern migrations of this mostly Northern Hemisphere family, the first of which remained isolated and evolved into the existing members of this genus. This hypothesized migration and evolutionary history explains the more primitive breeding system characteristics and morphology in this genus in relation to the rest of the family.[5]

As with other mangrove species, the habitat preferred by the members of this genus are sandy or rocky soils in the more saline environment of the mangroves toward the sea.[2] The species are thus halophytic.[1]

Botanical history and taxonomy

The genus Aegialitis was described by

grasses was given the same genus name in 1820 by Carl Bernhard von Trinius and later renamed Rostraria.[9]

There have been several opinions on the proper placement of the genus in relation to the rest of the Plumbaginaceae, though most authors have noted its distinct characteristics make it difficult to place properly. In 1968

monotypic family, the Aegialitidaceae. The Plumbaginaceae has historically been divided into either two subfamilies or two tribes and each approach has offered a different perspective of the proper taxonomic relationship in the family. Through cladistic analysis using both genetic and morphological characteristics, studies have concluded that Aegialitis is the sister taxon to the rest of its subfamily (Staticoideae) and thus has been assigned to the monotypic tribe Aegialitideae, which is sister to the tribe Staticeae (including the genera Acantholimon, Armeria, Goniolimon, Limoniastrum, and Limonium).[4][5]

The genus name, Aegialitis, derives from the Greek, aegialos, ("seashore"), referring to where species of this genus are found.[10]

References

  1. ^
    Department of Biodiversity, Conservation and Attractions
    .
  2. ^ a b Australian Institute of Marine Science. (2003). Club Mangrove Archived July 28, 2008, at the Wayback Machine. Field Guide to the Mangroves of Queensland. Accessed online: 5 January 2009.
  3. ISBN 1-4020-0686-1
    .
  4. ^ a b Weber-El Ghobary, Magda O. (1984). The systematic relationships of Aegialitis (Plumbaginaceae) as revealed by pollen morphology. Plant Systematics and Evolution, 144(1): 53-58.
  5. ^ a b Lledó, M. D., Karis, P. O., Crespo, M. B., Fay, M. F., and Chase, M. W. (2001). Phylogenetic position and taxonomic status of the genus Aegialitis and subfamilies Staticoideae and Plumbaginoideae (Plumbaginaceae): evidence from plastid DNA sequences and morphology. Plant Systematics and Evolution, 229: 107-124.
  6. ^ "Aegialitis". International Plant Names Index (IPNI). Royal Botanic Gardens, Kew; Harvard University Herbaria & Libraries; Australian National Botanic Gardens. 5 January 2009.
  7. ^ "International Plant Names Index". The Royal Botanic Gardens, Kew. Retrieved 5 January 2009.
  8. ^ "International Plant Names Index". The Royal Botanic Gardens, Kew. Retrieved 5 January 2009.
  9. ^ Flora of Pakistan. Aegialitis. Accessed online 5 January 2009.
  10. Wikidata Q107006058
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=Aegialitis&oldid=1216816287"