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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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthur Wallis Exell
Arthur Wallis Exell OBE (21 May 1901, in Birmingham – 15 January 1993, in Cheltenham) was initially an assistant and later Deputy Keeper of Botany at the British Museum during the years 1924–1939 and 1950–1962. A noted cryptographer, taxonomist and phytogeographer, he was notable for his furthering of botanical exploration in tropical and sub-tropical Africa, and was an authority on the family Combretaceae. Exell's formal education started at Queen Elizabeth Grammar School in Warwickshire, and then King Edmund's School in Birmingham. From there he went on to Emmanuel College, Cambridge and was awarded an M.A. in 1926, having joined the British Museum as a second-class assistant on 11 August 1924, eventually becoming Deputy Keeper of Botany in 1950. He was entrusted with the Polypetalae, although his first paper was a morphological study of the hymenium in three species of fungus. Exell's first contact with Africa was in 1932/3 when he travelled to the islands in the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludwigia (plant)
''Ludwigia'' (primrose-willow, water-purslane, or water-primrose) is a genus of about 82 species of aquatic plants native to Central and South America with a cosmopolitan but mainly tropical distribution. At current, there is much debate among botanists and plant taxonomists as to the classification of many ''Ludwigia'' species. Botanists from the US Department of Agriculture are currently doing genetic analyses on plants from the Western US and South America to better classify members of this genus. The genus was named by Carl Linnaeus after Christian Gottlieb Ludwig (1709-1773), a German botanist, who was apparently not amused by this honour. Fossil record A large number of fossil seeds of †''Ludwigia collinsoniae'' and †''Ludwigia corneri'' have been described from middle Miocene strata of the Fasterholt area near Silkeborg in Central Jutland, Denmark. Selected species Listed from the NCBI The National Center for Biotechnology Information (NCBI) is part of the Un ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |