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Lemnoideae is a subfamily of flowering aquatic plants, known as duckweeds, water lentils, or water lenses. They float on or just beneath the surface of still or slow-moving bodies of fresh water and wetlands .
Eichhornia, commonly called water hyacinths, was a polyphyletic genus of the aquatic flowering plants family Pontederiaceae. Since it was consistently recovered in three independent lineages, it has been sunk into Pontederia , together with Monochoria .
Water hyacinth is a common fodder plant in the third world especially Africa though excessive use can be toxic. It is high in protein (nitrogen) and trace minerals and the goat feces are a good source of fertilizer as well. Water hyacinth is reported for its efficiency to remove about 60–80% nitrogen [123] and about 69% of potassium from ...
It is known by various common names such as, water orchid, and floating water hyacinth. The water hyacinth could be identified by its distinct thick, waxy green leaves that has a rounded or elliptical shape. It is able to grow under water and above water due to its long stem that is able to produce up to 5 flowers on a single stem. [2]
Aquatic plants require special adaptations for prolonged inundation in water, and for floating at the water surface. The most common adaptation is the presence of lightweight internal packing cells, aerenchyma , but floating leaves and finely dissected leaves are also common.
Megamelus scutellaris, the water hyacinth planthopper, is a true bug native to South America. It is used as a biological control agent to manage and reduce the spread of the water hyacinth (Pontederia crassipes, formerly Eichhornia crassipes), an invasive aquatic plant native to South America that has invaded many freshwater systems globally.
Flowers are solitary, bisexual, radial, with a long pedicel and usually floating or raised above the surface of the water, with girdling vascular bundles in receptacle. [ 11 ] [ 12 ] Some species are protogynous and primarily cross-pollinated, but because male and female stages overlap during the second day of flowering, and because it is self ...
It floats on the surface of the water, its roots hanging submersed beneath floating leaves. The leaves can measure 2 – 15 cm long and are light green, with parallel venations and wavy margins. [8] The surface of the leaves is covered in short, white hairs which form basket-like structures that can trap air bubbles and increase the plant's ...