Along with indica, japonica is one of the two main groups of Oryza sativa. They are typically short- to medium-grained. They usually contain more waxy-starches (amylopectin) than indicas. They generally grow in cooler climates and more mountainous climates. Japanese rices (not usually exported to the USA), Arborio and risotto rices, CalRose, Kokuho Rose, Nishiki and other Japanse styled rices grown on the West Coast of the United States are all japonicas.