Rolf Nussbaumer / Water hyacinth covering lake {Eichhornia crassipes} Texas, USA.
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Heather Angel / Channelled apple snail (Pomacea canaliculata) laid on Water hyacinth (Eichhornia crassipes) leaves, both invasive species, native to South America. Yangshuo, Guangxi Zhuang Autonomous Region, China.
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Staffan Widstrand / Wild Wonders of China / Water hyacinth (Eichhornia crassipes) and bees at Tongbiguan Nature Reserve, Dehong prefecture, Yunnan province, China. May
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Tom Gilks / Clumps of highly invasive Water hyacinth (Eichhornia Crassipes) floating on Lake Victoria, Kenya, April 2013.
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Tom Gilks / Woman carrying plastic washing bowl on head and wading through invasive Water hyacinth (Eichhornia crassipes) at lake edge, Kisumu region, Lake Victoria, Kenya
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Tom Gilks / Woman carrying plastic washing bowl on head and wading through invasive Water hyacinth (Eichhornia crassipes) at lake edge, Kisumu region, Lake Victoria, Kenya
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Tom Gilks / Women carrying plastic washing bowl on head wade through invasive Water hyacinth (Eichhornia crassipes) to reach lake edge, Kisumu region, Lake Victoria, Kenya
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Tom Gilks / Women with washing bowls wading out to reach lake edge beyond invasive Water hyacinth (Eichhornia crassipes) Kisumu region, Lake Victoria, Kenya, December 2013.
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Tom Gilks / Women with washing bowls wading out to reach lake edge beyond invasive Water hyacinth (Eichhornia crassipes) Kisumu region, Lake Victoria, Kenya, December 2013.
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Tom Gilks / Women with washing bowls wading out to reach lake edge beyond invasive Water hyacinth (Eichhornia crassipes) Kisumu region, Lake Victoria, Kenya, December 2013.
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Tom Gilks / Women with plastic tubs for washing clothes wading out to reach lake edge beyond invasive Water hyacinth (Eichhornia crassipes) Kisumu region, Lake Victoria, Kenya, December 2013.
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Adrian Davies / Water hyacinth (Eichhornia crassipes) Sabah, Borneo. Invasive species.