oat plant Poeae Chloroplast Group 1 (Aveneae type) Avena sativa Avena sativa L. oats cultivated oats PLANTS:AVSA cultivated oat MANSFELD:33218 A species of cereal grain grown for its seed, which is known by the same name (usually in the plural, unlike other cereals and pseudocereals). avena sativa common oat plant oat plant requires discussion