Cyperus papyrus, better known by the common name 'Papyrus Sedge', or 'Nile Grass', is a species of aquatic flowering plant belonging to the sedge family Cyperaceae. It is a tender herbaceous perennial, native to Africa, and forms tall stands of reed-like swamp vegetation in shallow water. The plant is probably best known as the source of ancient paper.
Seen and photographed at the Japanese Gardens in Central Park, San Mateo, California.
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