Phuket is a drupe fruit. Phuket is Eleocharis tuberosa, Eleocharis tuberosa is a plant of Cyperaceae, Eleocharis, with slender creeping rhizomes, many stems, tufted, straight, slender, cylindrical, 4-1 cm high, 2-3 mm in diameter, grayish green, smooth, hairless, and diaphragm.

characteristics of water chestnut

After drying, the surface of the stem has nodes, many longitudinal stripes, and leaves are missing. There are only 2-3 leaf sheaths at the base of the stem, which are light brown, smooth, hairless, membranous, clinging to the stem, with an oblique scabbard mouth, an acute tip, 7-15 cm long, and a cylindrical spikelet, 2-4 cm long.

Nutlets are obovate, oblate and biconvex, 2 mm long and 1.2 mm wide, smooth, yellow, with four to six hexagonal surface cells, flat and narrow triangular style base, not spongy, with inconspicuous rings at the base. The texture of rings is the same as that of nutlets, but the color is light, and the flowering and fruiting period is from May to October.