单词 | oscillatoria |
释义 | Oscillatorian. Biology. A genus of cyanobacteria (blue-green algae), the members of which form dark slimy unbranched filaments, capable of a gliding or undulating motion, in various fresh and salt water habitats; (also) an organism of this genus. In plural Oscillatoriae also: a former natural order containing the genus Oscillatoria (corresponding in part to the modern order Oscillatoriales). ΘΚΠ the world > plants > particular plants > algae > [noun] > silkweeds crow-silk1721 conferva1758 moor-ball1777 Oscillatoria1828 water flannel1843 conferval1850 confervoid1855 silkweed1857 duck-mud1884 1828 N. Amer. Rev. Apr. 561 The color of the Red Sea, has long given occasion to a variety of conjectures and speculations. Dr Ehrenberg discovered, that it is owing to small animalcules (which he names Oscillatoria), that hold a rank about midway between plants and animals. 1830 J. Lindley Introd. Nat. Syst. Bot. 340 These [Arthrodieæ], which comprehend true Confervæ, Oscillatorias, and many Dicotomeæ. 1857 Proc. Royal Soc. 1856–7 8 482 The time-regulated movements of Oscillatoriæ and their congeners. 1861 A. Pratt Flowering Plants & Ferns Great Brit. II. 55 The Oscillatorias..are weeds of our fresh or salt water,..whose thread-like forms twist about like worms. 1909 Bot. Gaz. 48 64 The complementary tints attained promptly by certain Oscillatoriae, when exposed to light of differing hues. 1941 R. Headstrom Adventures with Microscope xi. 40 Another Alga of interest is Oscillatoria..which may be found in almost all standing water, where it frequently forms thick floating mats of a dark purplish or almost blackish color. 1942 Jrnl. Ecol. 30 276 Good examples are afforded by the Oscillatorias which often cover the surface of the deposit with a loose mat. 1995 C. van den Hock et al. Algae ii. 22/1 People swimming off tropical coasts can suffer irritation of the skin and mucous membranes, caused by Lyngbya..and Oscillatoria species. This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022). < n.1828 |
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