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Acacia Marramamba
''Acacia marramamba'', commonly known as marramamba, is a shrub or tree belonging to the genus ''Acacia'' and the subgenus ''Phyllodineae'' that is endemic to arid parts of western Australia. Description The bushy spinescent shrub or tree typically grows to a height of . It has grey coloured bark that is mostly smooth but becomes fissured and fibrous near the base of the tree. It has glabrous red-brown to light brown or orange coloured branchlets with vivid light green new shoots and shiny stipules that are in length. Like most species of ''Acacia'' it has phyllodes rather than true leaves. The asymmetric and evergreen leathery phyllodes are a pale milk green to blue-green colour and have a rounded upper margin and almost straight lower margin with a length of and a width of . The phyllodes have a main longitudinal nerve and form a needle-sharp point with a length of at the tip. It produces red and yellow flowers from May to July. Taxonomy The species was first formally des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bruce Maslin
Bruce Roger Maslin (born 3 May 1946) is an Australian botanist, known for his work on ''Acacia'' taxonomy. Born in Bridgetown, Western Australia, he obtained an honours degree in botany from the University of Western Australia in 1967, then took up an appointment as a botanist with the Western Australian Herbarium. The following year he was conscripted to serve in the Vietnam War; he gave three years in National Service, serving in Vietnam in 1969. In 1970 he returned to his position at the Western Australian Herbarium, serving in that institution until 1987. During this time he was Australian Botanical Liaison Officer in 1977 and 1978; editor of ''Nuytsia ''Nuytsia floribunda'' is a hemiparasitic tree found in Western Australia. The species is known locally as moodjar and, more recently, the Christmas tree or Western Australian Christmas tree. The display of intensely bright flowers during the ...'' from 1981 to 1983; and acting curator in 1986 and 1987. In 1987, Maslin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ironstone
Ironstone is a sedimentary rock, either deposited directly as a ferruginous sediment or created by chemical replacement, that contains a substantial proportion of an iron ore compound from which iron (Fe) can be smelted commercially. Not to be confused with native or telluric iron, which is very rare and found in metallic form, the term ''ironstone'' is customarily restricted to hard, coarsely banded, non-banded, and non-cherty sedimentary rocks of post-Precambrian age. The Precambrian deposits, which have a different origin, are generally known as banded iron formations. The iron minerals comprising ironstones can consist either of oxides, i.e. limonite, hematite, and magnetite; carbonates, i.e. siderite; silicates, i.e. chamosite; or some combination of these minerals.U.S. Bureau of Mines Staff (1996) ''Dictionary of Mining, Mineral, & Related Terms.'' Report SP-96-1, U.S. Department of Interior, U.S. Bureau of Mines, Washington, D.C.Neuendorf, K. K. E., J. P. Mehl Jr., and J. A. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacias Of Western Australia
''Acacia'', commonly known as the wattles or acacias, is a large genus of shrubs and trees in the subfamily Mimosoideae of the pea family Fabaceae. Initially, it comprised a group of plant species native to Africa and Australasia. The genus name is New Latin, borrowed from the Greek (), a term used by Dioscorides for a preparation extracted from the leaves and fruit pods of ''Vachellia nilotica'', the original type of the genus. In his ''Pinax'' (1623), Gaspard Bauhin mentioned the Greek from Dioscorides as the origin of the Latin name. In the early 2000s it had become evident that the genus as it stood was not monophyletic and that several divergent lineages needed to be placed in separate genera. It turned out that one lineage comprising over 900 species mainly native to Australia, New Guinea, and Indonesia was not closely related to the much smaller group of African lineage that contained ''A. nilotica''—the type species. This meant that the Australasian lineage (by ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Acacia Species
Several Cladistics, cladistic analyses have shown that the genus ''Acacia sensu lato, Acacia'' is not monophyletic. While the subg. ''Acacia'' and subg. ''Phyllodinae'' are monophyletic, subg. ''Aculeiferum'' is not. This subgenus consists of three clades. Therefore, the following list of ''Acacia'' species cannot be maintained as a single entity, and must either be split up, or broadened to include species previously not in the genus. This genus has been provisionally divided into 5 genus, genera, ''Acacia'', ''Vachellia'', ''Senegalia'', ''Acaciella'' and ''Mariosousa''. The proposed type species of ''Acacia'' is ''Acacia penninervis''. Which of these segregate genera is to retain the name ''Acacia'' has been controversial. The genus was previously typified with the African species ''Acacia scorpioides'' (L.) W.F.Wright, a synonym of ''Acacia nilotica'' (L.) Delile. Under the original typification, the name ''Acacia'' would stay with the group of species currently recognized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triodia (plant)
''Triodia'' is a large genus of hummock-forming bunchgrass endemic to Australia. They are known by the common name spinifex, although they are not a part of the coastal genus '' Spinifex''. Many of the soft-leaved members of this species were formerly included in the genus ''Plectrachne''. It is known as ''tjanpi'' in central Australia, and is used for basket weaving by the women of various Aboriginal Australian peoples. A multiaccess key (SpiKey) is available as a free application for identifying the ''Triodia'' of the Pilbara (28 species and one hybrid). Description ''Triodia'' is a perennial Australian tussock grass that grows in arid regions. Its leaves (30–40 centimetres long) are subulate ( awl-shaped, with a tapering point). The leaf tips, that are high in silica, can break off in the skin, leading to infections. Uses Spinifex has traditionally had many uses for Aboriginal Australians. The seeds were collected and ground to make seedcakes. Spinifex resin was ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Maitlandii
''Acacia maitlandii'', also known as Maitland's wattle, is a perennial tree native to Australia. Description The shrub has an open and spindly habit, with a height of . The resinous and glabrous branchlets are generally terete in form. The glabrous phyllodes are straight with a narrowly elliptic shape and are in length and wide. Flowers are yellow and occur sometime between May and October. The simple inflorescences occur singly in the axil of the phyllodes. The globose flower heads have a diameter of and contain 35 to 60 bright yellow flowers. Following flowering smooth papery seed pods form. The pods are straight and slightly constricted between seeds with a length of and wide. Taxonomy The species was first described by Ferdinand von Mueller in 1862 as part of the work ''Fragmenta Phytographiae Australiae''. The plant is named for an early European explorer of Australia's Northwest, Maitland Brown, who collected the type specimen. It was later reclassified as ''Racosp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Acacia Sibirica
''Acacia sibirica'', commonly known as bastard mulga or false witchetty bush, is a tree or shrub belonging to the genus ''Acacia'' and the subgenus ''Juliflorae''. It is native to arid areas of Australia. Description The spreading tree or shrub typically grows to a height of with smooth fissured dark grey bark. The plant generally has a rounded or obconic habit with several stright to crooked, spreading main stems from the base with dense and spreading crown. The slightly shiny, glabrous, green to grey-green phyllodes are variable in shape and size They have a linear to narrowly oblong or narrowly elliptic shape and are in length with a width of about . The phyllodes are coriaceous and have an erect or spreading arrangement. The plant flowers between May and July but sometimes as late as September with Inflorescences that have rudimentary racemes which are scattered over the plants and not particularly showy. The spikes are bright golden with small flowers, that eventually form ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
