Grain

Oryza sativa

A tier

Asian rice (Oryza sativa) is the species behind nearly every supermarket bag and risotto tin. Two major subspecies—indica and japonica—plus countless landraces give long, medium, and short grains, aromatic basmatis, sticky glutinous types, and everything between. Endosperm amylose decides whether cooked grains stay separate or cling; bran colour and milling grade further split brown, white, and red forms. From irrigated Yangtze paddies to upland fields and deepwater systems, sativa feeds billions daily. Brown, white, parboiled, and germinated products are process choices, not different species. When a recipe simply says “rice,” it almost always means sativa of some commercial class rather than African glaberrima or wild relatives.