| 21. | The salvinia stem-borer moth is native to the United States and presents no threat to the environment.
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| 22. | A water fern of low wildlife utilisation value, the salvinia is later transported to a suitable site for composting.
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| 23. | The water level of Bistineau will be lowered after the Labor Day weekend in another effort to combat the salvinia.
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| 24. | The egg-beater hairs of " Salvinia molesta " and closely related species ( e . g.
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| 25. | Water hyacinth, giant salvinia and hydrilla all were purchased abroad and brought home to decorate aquariums or backyard water gardens.
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| 26. | Giant water fern ( " Salvinia molesta " ) is one of the world's worst aquatic weeds.
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| 27. | The Brazilian floating fern known as " Salvinia molesta " is now widely distributed in tropical and subtropical areas.
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| 28. | "Salvinia ", like the other ferns in order Salviniales are heterosporous, producing spores of differing sizes.
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| 29. | 01 : 11 Aug 7, 2002 Giantsalvinia . jpg " ( Giant salvinia to be used on the Polish Wikipedia)
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| 30. | The best known examples for long term air retention under water are the floating ferns of genus " Salvinia ".
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