English sea oats (Uniola paniculata) Noun sea oats (countable and uncountable, plural sea oats) Any species of oat-like grasses that can tolerate salty and alkaline conditions. Synonyms: seaside oats, araña, arroz de costa Uniola paniculata, native to the Gulf and southeastern coasts of the United States. Similar-looking species, such as Chasmanthium latifolium Translations Uniola paniculata Spanish: araña (es) f Chasmanthium latifolium — see river oats References sea oats on Wikipedia.Wikipedia Uniola paniculata on Wikispecies.Wikispecies Uniola paniculata on Wikimedia Commons.Wikimedia Commons Uniola paniculata at USDA Plants database Wikiwand - on Seamless Wikipedia browsing. On steroids.