单词 | nassella |
释义 | nassellan. Any of various coarse, tussock-forming grasses constituting the genus Nassella, native to the Andes; spec. the Chilean N. trichotoma, which was introduced to parts of New Zealand and South Africa and has locally established itself there as a troublesome weed. Also (in form Nassella): the genus itself.Valid publication of the genus name: E. E. Desvaux in C. Gay Historia Física y Política de Chile, Botánica (1853) VI. 263. ΘΚΠ the world > plants > particular plants > plants perceived as weeds or harmful plants > weed > grasses perceived as weeds > [noun] > other weedy grasses drakea1325 aegilops1601 chess1736 Vassal's grassa1818 nassella1909 the world > plants > particular plants > plants perceived as weeds or harmful plants > weed > grasses perceived as weeds > [adjective] couchy1787 nassella1950 1909 Bull. Torrey Bot. Club 36 347 Includes new species in Paspalum, Nassella (2), Calamagrostis. 1945 Bot. Gaz. 107 1/1 Three main aggregates of species within Oryzopsis have in the past been recognized as different genera or have been combined with Nassella and Piptochaetium. 1946 Nature 21 Dec. 920/1 Weed problems..such as nassella, constitute a serious threat to good pasture land [in New Zealand]. 1950 N.Z. Jrnl. Agric. June 515/1 Nassella tussock... This insidious pest crept almost unawares on to some of our good pastoral country. 1973 Eastern Province Herald (Port Elizabeth) 28 Mar. 4 Along the eastern and north-eastern mountain and ridge route,..ironwood and the exotic nasella have come in. 1984 S. Afr. Jrnl. Plant & Soil 1 1 The total seed bank of all plants counted under a dense nassella infestation varied between 50,000 and 100,000 seeds m−2 surface area (5 cm deep) of which more than half were nassella. 1996 Ecol. Applic. 6 1189/1 Pristine California grasslands were probably dominated by perennial bunchgrasses, including Nassella. This entry has been updated (OED Third Edition, June 2003; most recently modified version published online March 2022). < n.1909 |
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