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Discaria
''Discaria'' is a genus of 6 species of flowering plants in the family Rhamnaceae, native to temperate regions of the Southern Hemisphere, in Australia, New Zealand and South America. They are deciduous thorny shrubs or small trees growing to 2–5 m tall. They are also non-legume nitrogen fixers. Many of the world's ''Discaria'' species qualify as xerophytes in the true sense of the term, and the Australian species are no exception. They frequently occur on porous or well-drained sites and on soils of low fertility. Some species can fix nitrogen from the atmosphere with the help of symbiotic bacteria ('' Frankia'') that form nodules in their roots. Taxonomy Species ''Discaria'' comprises the following species: * '' Discaria americana'' Gillies & Hook. * '' Discaria articulata'' (Phil.) Miers * '' Discaria chacaye'' (G.Don) Tortosa * '' Discaria nitida'' Tortosa * ''Discaria pubescens ''Discaria pubescens'', the hairy anchor plant or Australian anchor pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discaria toumatou
''Discaria toumatou'', commonly called matagouri, tūmatakuru, or wild Irishman, is a tangle-branched thorny shrub endemic to New Zealand. It is common throughout the South Island and is less common in the North Island. Taxonomy This species was described by French naturalist Étienne Raoul in 1844 from material collected in Akaroa in association with '' Pteridium esculentum''. The generic name ''Discaria'' refers to disc-shaped flowers. The Latinised specific epithet Raoul chose, ''toumatou'', is a corruption of the word ''tūmatakuru'', one of the Māori names for this species, which he transcribed as "toumatou-kourou". Etymology The English name ''matagouri'' is another corruption of ''tūmatakuru''. Other names in the Māori language include ''tūmatakuri'' and ''tūturi''. Another name is "wild Irishman"; the English writer Samuel Butler in 1863 recalled "…a very uncomfortable prickly shrub, which they call Irishman, and which I do not like the look of at all." D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Discaria pubescens
''Discaria pubescens'', the hairy anchor plant or Australian anchor plant, is a species of flowering plant in the family Rhamnaceae. It is native to Tasmania, Victoria, New South Wales and Queensland in Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl .... References pubescens Flora of New South Wales Flora of Queensland Flora of Tasmania Flora of Victoria (state) Rosales of Australia Rare flora of Australia Taxa named by Adolphe-Théodore Brongniart Taxa named by George Claridge Druce {{Australia-rosid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Actinorhizal Plant
Actinorhizal plants are a group of angiosperms characterized by their ability to form a symbiosis with the nitrogen fixing actinomycetota ''Frankia''. This association leads to the formation of nitrogen-fixing root nodules. Actinorhizal plants are distributed within three clades, and are characterized by nitrogen fixation. They are distributed globally, and are pioneer species in nitrogen-poor environments. Their symbiotic relationships with Frankia evolved independently over time, and the symbiosis occurs in the root nodule infection site. Classification Actinorhizal plants are Dicotyledon, dicotyledons distributed within 3 Angiosperm, orders, 8 Family (biology), families and 26 Genus, genera, of the angiosperm clade. All nitrogen fixing plants are classified under the "Nitrogen-Fixing Clade", which consists of the three actinorhizal plant orders, as well as the order fabales. The most well-known nitrogen fixing plants are the Legume, legumes, but they are not classified as act ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rhamnaceae
The Rhamnaceae are a large Family (biology), family of flowering plants, mostly trees, shrubs, and some vines, commonly called the buckthorn family. Rhamnaceae is included in the order Rosales. The family contains about 55 genera and 950 species. The Rhamnaceae have a worldwide distribution, but are more common in the subtropical and tropical regions. The earliest fossil evidence of Rhamnaceae is from the Late Cretaceous. Fossil flowers have been collected from the Upper Cretaceous of Mexico and the Paleocene of Argentina. Leaves of family Rhamnaceae members are Simple leaf, simple, i.e., the leaf blades are not divided into smaller leaflets.Flowering Plants of the Santa Monica Mountains, Nancy Dale, 2nd Ed. 2000, p. 166 Leaves can be either alternate or opposite leaves, opposite. Stipules are present and modified into spines in many genera. In some (e.g. ''Paliurus spina-christi'' and ''Colletia paradoxa'') spectacularly so. ''Colletia'' stands out by having two axillary buds i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frankia
''Frankia'' is a genus of nitrogen-fixing bacteria that live in symbiosis with actinorhizal plants, similar to the '' Rhizobium'' bacteria found in the root nodules of legumes in the family Fabaceae. ''Frankia'' also initiate the forming of root nodules. This genus was originally named by Jørgen Brunchorst, in 1886 to honor the German biologist Albert Bernhard Frank. Brunchorst considered the organism he had identified to be a filamentous fungus. redefined the genus in 1970 as containing prokaryotic actinomycetes and created the family Frankiaceae within the Actinomycetales. He retained the original name of ''Frankia'' for the genus. __TOC__ Overview Most ''Frankia'' strains are specific to different plant species. The bacteria are filamentous and convert atmospheric nitrogen into ammonia via the enzyme nitrogenase, a process known as nitrogen fixation. They do this while living in root nodules on actinorhizal plants. The bacteria can supply most or all of the nit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flowering Plant
Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed within a fruit. The group was formerly called Magnoliophyta. Angiosperms are by far the most diverse group of Embryophyte, land plants with 64 Order (biology), orders, 416 Family (biology), families, approximately 13,000 known Genus, genera and 300,000 known species. They include all forbs (flowering plants without a woody Plant stem, stem), grasses and grass-like plants, a vast majority of broad-leaved trees, shrubs and vines, and most aquatic plants. Angiosperms are distinguished from the other major seed plant clade, the gymnosperms, by having flowers, xylem consisting of vessel elements instead of tracheids, endosperm within their seeds, and fruits that completely envelop the seeds. The ancestors of flowering plants diverged from the commo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
