• Amaranthus brownii, an endangered species of pigweed endemic to the Northwestern Hawaiian Island of Nihoa, was discovered in 1923, but has not been seen in the wild for twenty-five years?
• betalains are deep red pigments responsible for the color of beets (pictured), bougainvillea, amaranth, and many cacti?

Facts on topics related to Amaranth

Rice

• Vietnam, one of the world’s richest agricultural regions (pictured), is the second-largest exporter worldwide and the seventh-largest consumer of rice?
• Kao Neaw, a Thai sticky rice dish, is often served with ripe mangos and coconut milk as Kao Neaw Mamuan?
• during Operation Cedar Falls in the Vietnam War, American and South Vietnamese troops captured 3,700 tons of rice, enough to feed 13,000 troops for a full year?
• in the 250-year-old Durga Puja of Shobhabazar palace, the goddess (statue pictured) was offered homemade sweets because non-Brahmin patrons were not allowed to offer rice?
• the Upstate South Carolina plantation, Ashtabula, set the "world record" for rice production in 1845?
• the Chianan Plain, the largest plain of Taiwan located at the central-southwestern region of the island, has three harvests of rice crops annually?
• the annual Chembuduppu festival at St. George Orthodox Church, Chandanapally is held in commemoration of non-Christians bringing rice to feed hundreds of voluntary labourers during its construction?
• the cape of Inamuragasaki was so named for its similarity in shape to a stack of rice at harvest time?
• the rice blast fungus Magnaporthe grisea destroys enough rice to feed more than 60 million people annually, and that its spores were prepared as an anti-plant biological weapon during World War II?
• the suffering caused by 19th century floods and famines in Mymensingh District, presently in Bangladesh, led to the sale of human beings for around the price of a maund of rice?

Maize

• maize was the staple of Aztec cuisine, and that maguey worms, spirulina and corn smut were popular Aztec foods?
• the Birdsville Races in Queensland, Australia used to have separate races for horses that ate grass and those that ate corn?
• the maize weevil (pictured) is a serious pest of maize in the United States, and also infests standing crops and cereals in all tropical areas of the world?

Buckwheat

• memiljeon is a type of Korean pancake, made with buckwheat flour and vegetables?

Barley

• murri, an Arabic condiment akin to soy sauce, is made from barley dough allowed to ferment for 40 days?
• the Aberfeldy Distillery closed for two years during World War I, because they could not get barley?
• the use of multiple strains of rhizobacteria as composite microbial inoculants has been shown to benefit the cultivation of crops such as rice and barley?

Millet

• foxtail millet has the longest history of cultivation among the millets, having been grown in China since between three and four thousand years ago?
• Haraldskaer Woman, who lived around 540 BC, is one of the best preserved bog people ever discovered, and that forensic analysis reveals her last meal was blackberries and millet?