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G.Don
George Don (29 April 1798 – 25 February 1856) was a Scottish botanist and plant collector. Life and career George Don was born at Doo Hillock, Forfar, Angus, Scotland on 29 April 1798 to Caroline Clementina Stuart and George Don (b.1756), principal gardener of the Royal Botanic Garden Edinburgh in 1802. Don was the elder brother of David Don, also a botanist. He became foreman of the gardens at Chelsea in 1816. In 1821, he was sent to Brazil, the West Indies and Sierra Leone to collect specimens for the Royal Horticultural Society. Most of his discoveries were published by Joseph Sabine, although Don published several new species from Sierra Leone. Don's main work was his four volume ''A General System of Gardening and Botany'', published between 1832 and 1838 (often referred to as Gen. Hist., an abbreviation of the alternative title: ''A General History of the Dichlamydeous Plants''). He revised the first supplement to Loudon's ''Encyclopaedia of Plants'', and provided ...
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Combretum
''Combretum'', the bushwillows or combretums, make up the type genus of the family Combretaceae. The genus comprises about 272 species of trees and shrubs, most of which are native to tropical and southern Africa, about 5 to Madagascar, but there are others that are native to tropical Asia, New Guinea and the Bismarck Archipelago, Australia, and tropical America. Though somewhat reminiscent of willows (''Salix'') in their habitus, they are not particularly close relatives of these. Ecology Bushwillow trees often are important plants in their habitat. Savannahs in Africa, in particular those growing on granitic soils, are often dominated by ''Combretum'' and its close relative '' Terminalia''. For example, ''C. apiculatum'' is a notable tree in the Angolan mopane woodlands ecoregion in the Kunene River basin in southern Africa. Other species of this genus are a major component of Southwestern Amazonian moist forests. This genus contains several species that are pollinated b ...
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Physochlaina Orientalis
''Physochlaina'' is a small genus of herbaceous perennial flowering plants belonging to the nightshade family, Solanaceae, found principally in the north-western provinces of China (and regions adjoining these in the Himalaya and Central Asia) although one species occurs in Western Asia, while another is found as far east as those regions of Siberia abutting the eastern borders of Mongolia and, furthermore, not only in Mongolia itself, but also in the Chinese autonomous region of Inner Mongolia. Some sources maintain that the widespread species ''P. physaloides'' is found also in Japan, but the species is not recorded as being native in one of the few English-language floras of the country. The genus is a valuable one, since its species are not only of considerable medicinal value, being rich in tropane alkaloids, but also of ornamental value, three species having been grown for the purpose, although hitherto infrequently outside botanical gardens. Furthermore, the genus contain ...
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Acacia Podalyriifolia
''Acacia podalyriifolia'' is a perennial tree which is fast-growing and widely cultivated. It is native to Australia but is also naturalised in Malaysia, Africa, India and South America. Its uses include environmental management and it is also used as an ornamental tree. It is very closely related to '' Acacia uncifera''. It grows to about in height and about the same in total width. It blooms during winter. Common names for it are Mount Morgan wattle, Queensland silver wattle, Queensland wattle, pearl acacia, pearl wattle and silver wattle. Description The tall shrub or small tree typically reached a height and width of around . Like most species of ''Acacia'' it has phyllodes rather than true leaves. It has grey coloured, smooth or finely fissured bark with terete and hairy branchlets that are often covered with a fine white powdery coating. The silver-grey to grey-green coloured phyllodes have a broadly elliptic to ovate shape and a length of and a width of and ...
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Catharanthus Roseus
''Catharanthus roseus'', commonly known as bright eyes, Cape periwinkle, graveyard plant, Madagascar periwinkle, old maid, pink periwinkle, rose periwinkle, is a species of flowering plant in the family Apocynaceae. It is native and endemic to Madagascar, but grown elsewhere as an ornamental and medicinal plant. It is a source of the drugs vincristine and vinblastine, used to treat cancer. It was formerly included in the genus ''Vinca'' as ''Vinca rosea''. It has many vernacular names among which are ''arivotaombelona'' or ''rivotambelona'', ''tonga'', ''tongatse'' or ''trongatse'', ''tsimatiririnina'', and ''vonenina''. Synonyms Two varieties are recognized * ''Catharanthus roseus'' var. ''roseus'' : Synonymy for this variety ::''Catharanthus roseus'' var. ''angustus'' Steenis ex Bakhuizen f. :: ''Catharanthus roseus'' var. ''albus'' G.Don G.Don, Gen. Hist. 4(1): 95. 1837. :: ''Catharanthus roseus'' var. ''occellatus'' G.Don :: ''Catharanthus roseus'' var. ''nanus'' Markgr. ...
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Acacia Holosericea
''Acacia holosericea'' is a shrub native to tropical and inland northern Australia. It is commonly known as soapbush wattle, soapbush, strap wattle, candelabra wattle, silver wattle and silky wattle. Description The shrub has a spreading habit and typically grows to a height of and a width of . The large grey-green phyllodes have an ovate-lanceolate shape with a length of and a width of and are covered with white silky hairs, with three to four prominent veins. The flowers are rod-like and bright yellow, 3–5 cm long. The thinly crustaceous seed pods that form after flowering are tightly irregularly coiled and have a width of . The pods are in length and twisted and curled. The shiny dark brown seeds are arranged longitudinally in the pods and have an obloid-ellipsoid shape and are in length with a bright yellow aril. The seed is edible.Low,T., ''Wild Food Plants of Australia'', 1988. Taxonomy The species was first formally described by the botanist Allan Cunningha ...
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Ludwigia Hyssopifolia
''Ludwigia hyssopifolia'', called seedbox and linear leaf water primrose, is a species of flowering plant in the genus '' Ludwigia'', native to the New World Tropics and widely introduced to the rest of the world's tropics. A serious weed of rice paddies, a single plant can produce 250,000 seeds. References hyssopifolia Plants described in 1957 {{Myrtales-stub ...
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Acacia Cyclops
''Acacia cyclops'', commonly known as coastal wattle, cyclops wattle, one-eyed wattle, red-eyed wattle, redwreath acacia, western coastal wattle, rooikrans, rooikrans acacia, is a coastal shrub or small tree in the family Fabaceae. Native to Australia, it is distributed along the west coast of Western Australia as far north as Leeman, and along the south coast into South Australia. The Noongar peoples of Western Australia know the plant as wilyawa or woolya wah. Description It is found in locations exposed to coastal winds, red-eyed wattle grows as a dense, dome shaped shrub; this helps protect against salt spray, sand-blast and erosion of soil at the roots. When sheltered from the wind, it tends to grow as a small tree typically to a height of but can reach as high as . Like many other ''Acacia'' species, red-eyed wattle has phyllodes rather than true leaves. The phyllodes range from four to eight centimetres long, and from six to twelve millimetres wide. Its flower hea ...
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Acacia Pendula
''Acacia pendula'', commonly known as the weeping myall, true myall, myall, silver-leaf boree, boree, and nilyah, is a species of wattle, which is native to Australia. The 1889 book ''The Useful Native Plants of Australia'' records that common names included "Weeping Myall", "True Myall", and Indigenous people of western areas of New South Wales and Queensland referred to the plant as "Boree" and "Balaar". Description The tree typically grows to a height of and a width of and has an erect, pendulous to spreading habit. It has hard fissured grey bark on the trunk and limbs. It has pendulous branches with angled or flattened branchlets that are covered in short fine hairs but becomes glabrous as it matures. The grey-green narrow phyllodes are about in length and wide and have a narrowly elliptic to very narrowly elliptic or sometimes narrowly oblong-elliptic shape and can be straight or curved The phyllodes have many longitudinal indistinct veins, a subacute apex with mucro a ...
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Daviesia Physodes
''Daviesia physodes'' is a species of flowering plant in the family Fabaceae and is endemic to near-coastal areas of south-western Western Australia. It is an open shrub with verically flattened or tapering, sharply-pointed phyllodes, and yellow and pink to red flowers. Description ''Daviesia physodes'' is an open, glabrous, usually glaucous shrub that typically grows to a height of up to . The phyllodes on the lower part of the plant are vertically flattened, wedge-shaped, up to long and high, those near the ends of the branchlets tapering and sharply pointed, up to long and wide. The flowers are arranged in groups of two to four on a peduncle about long, the rachis about long, each flower on a pedicel long. The sepals are about long, the upper two lobes joined for most of their length and the lower three about long. The standard petal is broadly egg-shaped with a notched centre, about long and wide, yellow with pink tinge. The wings are long and pink to red, the ke ...
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Psittacanthus Calyculatus
'' Psittacanthus calyculatus'', (''erva de passerinho''), is a species of Neotropical mistletoe in the family Loranthaceae, native to Colombia, Mexico, the Mexican Gulf, and Venezuela. Description ''Psittacanthus calyculatus'' is hairless, with nearly terete branches. The leaves are opposite and ovate or lanceolate, having almost no petiole, and without veins. The inflorescences are terminal and in groups of three yellow to scarlet flowers which have cup-shaped bracts under them. Life cycle In October or November, the fruit matures, and is eaten by a bird, who voids the seed. By November, if the defecation site is a suitable branch, the seed may have infected the host, and initial buds will start to appear. Vegetative growth continues, until, four years after the initial infection, the plant flowers in November, with fruit becoming mature the following year from October to February. Thus, there are some five years required for its life-cycle. Ecology Vasquez Collazo and Ge ...
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Acacia Rigens
''Acacia rigens'', commonly known as nealie, is an erect or spreading shrub or small tree that is endemic to Australia. Other common names include needle wattle, needlebush acacia, nealia and nilyah. Description Plants typically grows to a height of and have rigid, terete phyllodes that are between in length. The bright yellow flowerheads appear in groups of up to four in the axils of the phyllodes. The simple inflorescences have resinous and spherical flower-heads with a diameter of and contain 20 to 30 bright yellow coloured, 5-merous flowers that appear between July and December in the species' native range, followed by curled, twisted or coiled seed pods which are long and wide. Taxonomy The species was first formally described in 1832 by botanist Allan Cunningham. It resembles ''Acacia havilandiorum'' but has longer phyllodes and 4-merous flowers. The specific epithet is thought to be a reference to the rigidity of the phyllodes. Distribution The species occurs on re ...
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Acacia Deltoidea
''Acacia deltoidea'' is a shrub of the genus ''Acacia'' and the subgenus ''Plurinerves'' that is endemic to north western Australia. Description The straggling shrub typically grows to a height of and has glandular-hairy branchlets with persistent subulate upcurved stipules with a length of . Like most species of ''Acacia'' it has phyllodes rather than true leaves. The subsessile, imbricate phyllodes are patent to ascending with a cuneate to elliptic to triangular or broadly obdeltate shape. The leathery and glabrous phyllodes are in length and wide and have three to four distant, slightly raised main nerves. It blooms from March to August and produces yellow flowers. Taxonomy There are two recognised subspecies: *''Acacia deltoidea'' subsp. ''ampla'' *''Acacia deltoidea'' subsp. ''deltoidea'' Distribution It is native to an area in the West Kimberley region of Western Australia from along the Bonaparte Archipelago and Napier Bay in the west to around the Phillips Range, ...
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