Wolffia


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Related to Wolffia: Wolffian duct, Utricularia
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Wolffia

 

a genus of plants of the family Lemnaceae; the genus comprises 17 species. In the USSR there is one species, Wolffia arrhira. It consists of a spherical-oval petiole 0.3 to 2.0 mm in cross section; there are no leaves or roots. The plant grows on the surface of stagnant water. Usually it reproduces by budding as frequently as twice a day; more rarely it reproduces by means of seeds. The plant contains starch (up to 65 percent), protein (up to 10 percent), fat (up to 20 percent), and vitamins. It is possible to cultivate the plant for food and fodder purposes.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Indeed, Wolffia arrhiza is the smallest vascular plant on Earth.
"The effect of pH on the population growth of three species of duckweed: Spirodela oligorrhiza, Lemna minor and Wolffia arrhiza.
Chareontesprasit y Jiwyam [6], reemplazaron la harina de soya por harina de Wolffia, en dietas que contenian 0; 15; 30 y 45% de sustitucion, obteniendo excelentes resultados en la ganancia de peso en las tilapias del Nilo (Oreochromis niloticus), que fueron alimentadas con un 15% de sustitucion de la harina de pescado por harina de Wolffia.
By mid summer, the surface was covered by members of the Ceratophyllum group including Egeria densa, fanwort (Cabomba caroliniana) duckmeat (Spirodela punctata (Meyer) Thomps.), water meal (Wolffia columbiana Karst) and water fern (Azolla caroliniana Willd.).
The area also hosts specialist plants including frogbit, arrowhead and Wolffia - the smallest flowering plant in the world.
"It is home to an astonishing array of wildlife including lapwings, otters, water voles, the great silver water beetle and the world's smallest flowering plant, wolffia - all reasons we need to stand up and protect this part of our country before it is lost forever.
21 (5) 0.4 (l) 3 Cicuta bulbifera 7 (2) 0.3 (0.5) 1 Carex echinata 7 (2) 0.2 (0.4) 1 Ilex verticillata 7 (2) 0.2 (0.4) 1 Onoclea sensibilis 7 (2) 0.2 (0.4) 1 Toxicodendron vernix 7 (2) 0.2 (0.4) 1 GROUND LAYER Sphagnum fimbriatum 14 (29) 3.1 (56) 42 Aulacomnium palustre 14 (29) 2 (32) 30 Leptodictyum riparium 21 (43) 0.4 (6) 17 AQUATIC LAYER Lenma minor 57 (100) 39 (100) 100 Wolffia sp.
The results presented by this study were in agreement with earlier reports on other plants, such as aquatic plant wolffia arrhiza (Piotrowska et al., 2010), barley Hordeum vulgare (Tiryakioglu et al., 2006) and typha angustifolia (Bah et al., 2011).
Diversity of aquatic macrophytes in the Pantanal varies from the smallest (Wolffia brasiliensis Wedd.) to the largest hydrophyte, Victoria amazonica (Poepp.) Sowerby.
1820 ("Lemnoides").--Type: Wolffia Horkel ex Schleid., 1844, nom.
Since the wastewater may not be suitable for the survival of some species of fish, another process is the production of other valuable byproducts such as duckweed (for example, Lemna, Spirodela or Wolffia).
The water maintained in the laboratory for all the three taxa, namely Lemna, Spirodela, and Wolffia suffered a tenfold loss in total organic carbon while nitrogen concentration remained constant.