Neptunia plena: Water mimosa

Neptunia plena common names include Water mimosa, Water dead and awake, Water sensitive plant.

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Water mimosa is an aquatic plant that attaches to the bank at the waters edge and sends down a taproot. It has a special ‘fibrous sponge’  to float. Leaves are olive green and are arranged in opposite pairs along the stem and when disturbed or touched the leaflets close up.

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Water mimosa flowers are yellow ball-shaped. Neptunia plena  is planted or occasionally escaped in wet places and native to tropical Americas.

Photos: SBWR, Singapore 20100508; DFNP, Singapore 20120514

Source: Wikipedia ~ Neptunia oleracea

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