TROPICAL PLANT ENCYCLOPEDIA
Eichhornia azurea
Anchored Water HyacinthFamily: Pontederiaceae
Origin: Tropical America
Under water, the leaves are spear shaped but once it breaches the surface they become more rounded like other species of Water Hyacinth.
In favourable conditions it forms an amazingly beautiful hyacinth-like flower.
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Link to this plant:
https://toptropicals.com/catalog/uid/eichhornia_azurea.htm