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Hydrilla (waterthyme) is a genus of aquatic plant, usually treated as containing just one species, Hydrilla verticillata, though some botanists divide it into several species. It is native to the cool and warm waters of the Old World in Asia, Africa and Australia, with a sparse, scattered distribution; in Australia from Northern Territory ...
It is known as the Asian hydrilla leaf-mining fly. It is used as an agent of biological pest control against the noxious aquatic plant hydrilla (Hydrilla verticillata). The adult fly is about 1.5 millimeters long, dark gray in color with a shiny metallic gold or silver face. The female lays eggs on the leaves of hydrilla above the surface of ...
Hydrocharitaceae is a flowering plant family including 16 known genera with a total of ca 135 known species (Christenhusz & Byng 2016 [2]), that including a number of species of aquatic plant, for instance the tape-grasses, the well known Canadian waterweed, and frogbit.
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This species is native to temperate North America. It has been naturalised in Europe since 1939 and in Japan since the 1960s. [7] The first European record of Elodea nuttallii was probably 1914 in England, though it had been identified wrongly as Hydrilla verticillata, [8] with correct identification as Elodea nuttallii occurring in 1974.
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A. Albidella; Aldama media; Aldrovanda vesiculosa; Alismataceae; Alternanthera philoxeroides; Alternanthera reineckii; Althenia; Ammannia gracilis; Ammannia senegalensis
It is usually fairly easy to distinguish from its relatives, like the Brazilian Egeria densa and Hydrilla verticillata. These all have leaves in whorls around the stem; however, Elodea usually has three leaves per whorl, whereas Egeria and Hydrilla usually have four or more. Egeria densa is also a larger, bushier plant, with longer leaves. [15]