水菱角又名水菱草,野菱角,是一种浮生在水面的一年生草本植物,生于淡水湖中或淡水塘里。主根着生淤泥中,茎随水伸长,细长,有分枝性,茎节明显。叶呈菱形,边缘锯齿状单叶互生,密生于茎的前端,叶柄尖端膨大,成为气囊,用以贮藏空气使叶浮出水面,进行光合作用。叶下各节,每节均着生绿色细长的变态根,一方面支持茎枝浮于水面,一方面可以吸收和制造养料,供给本身需要。夏天 Water chestnuts, also known as water Lingcao, Yeh Tong Kok, is a floating born in the surface of the annual herb, was born in freshwater lakes or freshwater ponds. The main roots of the mud, stem elongation with the water, slender, branched, stalk obvious. Leaves are diamond-shaped, edge jagged single leaf alternate, dense in the front of the stem, petiole tip enlargement, a balloon, to store air leaves floating out of the surface, for photosynthesis. Each section under the leaf, each section of the green slender metamorphosis root, on the one hand to support stems floating in the water, on the one hand you can absorb and manufacture nourishment, the supply itself needs. summer