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Althenia
''Althenia'' is a genus of aquatic plants of the family Potamogetonaceae. This has long been a group of two species in the Mediterranean Europe and South Africa, but in 2016 was revised to include an Australasian relative, ''Lepilaena''. Description This genus is made up of aquatic herbs. The bristle-like leaves are clustered at the nodes. The wider bases produce broad ligules. The flowers are unisexual. The male flowers have a perianth made of three minute scales and have a single stamen. The female flowers have a perianth made of one to three segments. The gynoecium has three carpels with a single pendulous ovule in each ovary. The filiform styles gradually pass into the carpels and the stigmas are large and oblique. The mature carpels are oblique and compressed with a winged or thickened margin. The seeds are pendulous, oblong and compressed. The embryo is straight. Species :* '' Althenia australis'' (aquatic) :* ''Althenia bilocularis'' (aquatic) :* '' Althenia cylindrocar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Althenia Patentifolia
''Althenia'' is a genus of aquatic plants of the family Potamogetonaceae. This has long been a group of two species in the Mediterranean Europe and South Africa, but in 2016 was revised to include an Australasian relative, ''Lepilaena''. Description This genus is made up of aquatic herbs. The bristle-like leaves are clustered at the nodes. The wider bases produce broad ligules. The flowers are unisexual. The male flowers have a perianth made of three minute scales and have a single stamen. The female flowers have a perianth made of one to three segments. The gynoecium has three carpels with a single pendulous ovule in each ovary. The filiform styles gradually pass into the carpels and the stigmas are large and oblique. The mature carpels are oblique and compressed with a winged or thickened margin. The seeds are pendulous, oblong and compressed. The embryo is straight. Species :* '' Althenia australis'' (aquatic) :* ''Althenia bilocularis'' (aquatic) :* '' Althenia cylindrocar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lepilaena Australis Vic
''Althenia'' is a genus of aquatic plants of the family Potamogetonaceae. This has long been a group of two species in the Mediterranean Europe and South Africa, but in 2016 was revised to include an Australasian relative, ''Lepilaena''. Description This genus is made up of aquatic herbs. The bristle-like leaves are clustered at the nodes. The wider bases produce broad ligules. The flowers are unisexual. The male flowers have a perianth made of three minute scales and have a single stamen. The female flowers have a perianth made of one to three segments. The gynoecium has three carpels with a single pendulous ovule in each ovary. The filiform styles gradually pass into the carpels and the stigmas are large and oblique. The mature carpels are oblique and compressed with a winged or thickened margin. The seeds are pendulous, oblong and compressed. The embryo is straight. Species :* '' Althenia australis'' (aquatic) :* ''Althenia bilocularis'' (aquatic) :* '' Althenia cylindrocar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Althenia Orientalis
''Althenia'' is a genus of aquatic plants of the family Potamogetonaceae. This has long been a group of two species in the Mediterranean Europe and South Africa, but in 2016 was revised to include an Australasian relative, ''Lepilaena''. Description This genus is made up of aquatic herbs. The bristle-like leaves are clustered at the nodes. The wider bases produce broad ligules. The flowers are unisexual. The male flowers have a perianth made of three minute scales and have a single stamen. The female flowers have a perianth made of one to three segments. The gynoecium has three carpels with a single pendulous ovule in each ovary. The filiform styles gradually pass into the carpels and the stigmas are large and oblique. The mature carpels are oblique and compressed with a winged or thickened margin. The seeds are pendulous, oblong and compressed. The embryo is straight. Species :* '' Althenia australis'' (aquatic) :* ''Althenia bilocularis'' (aquatic) :* '' Althenia cylindrocar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Althenia Filiformis
''Althenia'' is a genus of aquatic plants of the family Potamogetonaceae. This has long been a group of two species in the Mediterranean Europe and South Africa, but in 2016 was revised to include an Australasian relative, ''Lepilaena''. Description This genus is made up of aquatic herbs. The bristle-like leaves are clustered at the nodes. The wider bases produce broad ligules. The flowers are unisexual. The male flowers have a perianth made of three minute scales and have a single stamen. The female flowers have a perianth made of one to three segments. The gynoecium has three carpels with a single pendulous ovule in each ovary. The filiform styles gradually pass into the carpels and the stigmas are large and oblique. The mature carpels are oblique and compressed with a winged or thickened margin. The seeds are pendulous, oblong and compressed. The embryo is straight. Species :* '' Althenia australis'' (aquatic) :* ''Althenia bilocularis'' (aquatic) :* '' Althenia cylindrocar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Potamogetonaceae
The Potamogetonaceae, commonly referred to as the pondweed family, is an aquatic family of monocotyledonous flowering plants. The roughly 110 known species are divided over six genera. The largest genus in the family by far is ''Potamogeton'', which contains about 100 species. The family has a subcosmopolitan distribution, and is considered to be one of the most important angiosperm groups in the aquatic environment because of its use as food and habitat for aquatic animals.Haynes, R. R. 1975. A revision of North American ''Potamogeton'' subsection Pusilli (Potamogetonaceae). Rhodora 76: 564--64 Taxonomy The Potamogetonaceae are currently placed in the early diverging monocot order Alismatales by the Angiosperm Phylogeny Group. Their concept of the family includes the plants sometimes treated in the separate family Zannichelliaceae, but excludes the genus '' Ruppia''. So circumscribed, the family currently consists of six genera: ''Althenia'', ''Groenlandia'', ''Lepilaena'', '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Althenia Bilocularis
''Althenia bilocularis'' is a plant found in both Australia and New Zealand, in fresh to brackish waters. In Australia it is found in all mainland states with the exception of the Northern Territory. In New Zealand it is found on the North, South and Chatham Islands. Taxonomy It was first described as ''Lepilaena bilocularis'' by Thomas Kirk in 1896. It was transferred to the genus, ''Althenia'', in 1927 by Leonard Cockayne Leonard Cockayne (7 April 1855 – 8 July 1934) is regarded as New Zealand's greatest botanist and a founder of modern science in New Zealand. Biography He was born in Sheffield, England where he attended Wesley College. He travelled to Austra .... This change by Cockayne is supported by DNA analyses. References Potamogetonaceae Taxa named by Thomas Kirk Plants described in 1896 {{monocot-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Althenia Australis
''Althenia australis'' is a species of aquatic plant in the family Potamogetonaceae. It is found in fresh to brackish waters in Australia. This species has been transferred from ''Lepilaena''.Ito, Y., Nr. Tanaka, P. García-Murillo, A.M. Muasya (2016A new delimitation of the Afro-Eurasian plant genus ''Althenia'' to include its Australasian relative, ''Lepilaena'' (Potamogetonaceae) – evidence from DNA and morphological data ''Molecular Phylogenetics and Evolution ''Molecular Phylogenetics and Evolution'' is a peer-reviewed scientific journal of evolutionary biology and phylogenetics. The journal is edited by E.A. Zimmer. Indexing The journal is indexed in: *EMBiology *Journal Citation Reports *Scopus ...'' 98: 261-270. References External linksFlora of Western Australia Potamogetonaceae Taxa named by James Drummond (botanist) Taxa named by William Henry Harvey Taxa named by Paul Friedrich August Ascherson {{monocot-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Althenia Cylindrocarpa
''Althenia cylindrocarpa'' is a species of aquatic plant in the family Potamogetonaceae. It is found in fresh to brackish waters in Australia. This species has been transferred from ''Lepilaena''.Ito, Y., Nr. Tanaka, P. García-Murillo, A.M. Muasya (in press) A new delimitation of the Afro-Eurasian plant genus ''Althenia'' to include its Australasian relative, ''Lepilaena'' (Potamogetonaceae) – evidence from DNA and morphological data. ''Molecular Phylogenetics and Evolution ''Molecular Phylogenetics and Evolution'' is a peer-reviewed scientific journal of evolutionary biology and phylogenetics. The journal is edited by E.A. Zimmer. Indexing The journal is indexed in: *EMBiology *Journal Citation Reports *Scopus ...'' xxx: xxx-xxx. References External linksFlora of South Australia Potamogetonaceae Taxa named by Friedrich August Körnicke Taxa named by Paul Friedrich August Ascherson {{monocot-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Althenia Preissii
''Althenia preissii'' is a plant found in fresh to brackish waters in Australia. This species has been transferred from the genus ''Lepilaena''.Ito, Y., Nr. Tanaka, P. García-Murillo, A.M. Muasya A new delimitation of the Afro-Eurasian plant genus ''Althenia'' to include its Australasian relative, ''Lepilaena'' (Potamogetonaceae) – evidence from DNA and morphological data. ''Molecular Phylogenetics and Evolution ''Molecular Phylogenetics and Evolution'' is a peer-reviewed scientific journal of evolutionary biology and phylogenetics. The journal is edited by E.A. Zimmer. Indexing The journal is indexed in: *EMBiology *Journal Citation Reports *Scopus ...'' xxx: xxx-xxx. References External linksFlora of Western Australia Potamogetonaceae Taxa named by Johann Georg Christian Lehmann {{monocot-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Althenia Marina
''Althenia marina'' is a plant found in brackish to marine waters in Australia. The species has been transferred from the genus ''Lepilaena''.Ito, Y., Nr. Tanaka, P. García-Murillo, A.M. Muasya (in press) A new delimitation of the Afro-Eurasian plant genus ''Althenia'' to include its Australasian relative, ''Lepilaena'' (Potamogetonaceae) – evidence from DNA and morphological data. ''Molecular Phylogenetics and Evolution ''Molecular Phylogenetics and Evolution'' is a peer-reviewed scientific journal of evolutionary biology and phylogenetics. The journal is edited by E.A. Zimmer. Indexing The journal is indexed in: *EMBiology *Journal Citation Reports *Scopus ...'' xxx: xxx-xxx. References External links Potamogetonaceae {{monocot-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Endemism
Endemism is the state of a species being found 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 found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can be also be referred to as an ''endemism'' or in scientific literature as an ''endemite''. For example '' Cytisus aeolicus'' is an endemite of the Italian flora. '' Adzharia renschi'' was once believed to be an endemite of the Caucasus, but it was later discovered to be a non-indigenous species from South America belonging to a different genus. The extreme opposite of an endemic species is one with a cosmopolitan distribution, having a global or widespread range. A rare alternative term for a species that is endemic is "precinctive", which applies to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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