crystalwortn.
/ˈkrɪstlwəːt/, U.S. /ˈkrɪstlˌwərt/, /ˈkrɪstlˌwɔrt/ Any of numerous liverworts of the family Ricciaceae, which comprises thallose liverworts found worldwide in moist soils and aquatic habitats; (in later use) spec. Riccia fluitans, commonly used as an aquarium plant.
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the world > plants > particular plants > plants and herbs > aquatic, marsh, and sea-shore plants > [noun] > other aquatic plants
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crystalwort1846
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1846 J. Lindley Veg. Kingdom 58 The Liverworts differ from Crystalworts in having elaters and involucrate spore-cases.
1874 H. Macmillan First Forms Vegetation (new ed.) ii. 73 One genus of the frondose group called Riccia or crystal-wort floats on the surface of stagnant waters and bears a superficial resemblance to the common duck-weed.
1913 F. L. Sargent Plants & their Uses xii. 513 The most primitive liverworts belong to the group known as crystalworts, occurring in all parts of the world and including many species.
1952 G. F. Hervey & J. Hems Freshwater Trop. Aquarium Fishes iii. 35 Riccia fluitans (Crystalwort). This is a very popular species among breeders of live-bearers.
2004 Biogeochemistry 67 254 Other non-rooting plant species like Riccia fluitans (crystalwort) and Ceratophyllum demersum (coontail) were also present.
This entry has been updated (OED Third Edition, June 2011; most recently modified version published online March 2022).
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