1、 Blade difference

There are 5-7 whorls of pink green Sargassum leaves, which are arranged in a feather shape. The leaflets are green and white and needle shaped. The submerged leaves are filiform and vermilion in color. The old leaves will wither in winter and turn red when they fall. The leaves of green Sargassum are emerald green, those on the water are feathery, 4-6 whorled, and the underwater leaves are filiform and yellow green

2、 Shape difference

The plant height of pink green Sargassum is about 10-20 cm. The stem is semi trailing and can crawl on the wetland. The upper part is very tall, crawling above the water surface, and the lower part is water stem with many branches. Green foxtail algae is higher than the former, about 30 cm, and its rhizome creeps underwater or in mud