Vegetables from stems are asparagus, bamboo shoots, cactus pads or nopalitos, kohlrabi, and water chestnut. The lake currently has populations of invasive species, including water chestnut ("Trapa natans"). The dessert is traditionally sweetened with water chestnut syrup, and served with ginkgo nuts. This marsh is the only place in American Samoa that has Chinese water chestnut. Fungal species can also attack the Chinese water chestnut. Salted fish, Chinese water chestnut, and mushrooms are common additions. Aquatic plants are also harvested&colon; lotus, water chestnut and the gorgon nut "Euryale ferox". In the wet season, water chestnut leaves are used to build their floating nests. The additional vegetable ingredients are yams, water chestnut, tomatoes, and green onions. One of the best known species is the Chinese water chestnut, "Eleocharis dulcis". Mistletoe, Water Chestnut ("Trapa natans") and Ivy ("Hedera helix") were present in Denmark.