Oryza sativa

It is an annual aquatic herb of the Poaceae family (there are already perennial rice varieties). The stalks are erect and mature plants are generally 0.5-1.5 meters tall, depending on the variety. Leaf sheaths generally have epidermal hairs; leaf tongue lanceolate; The leaves are linear-lanceolate, about 1-3 cm wide, rough. panicles are largely sparse; Spikelets contain 1 mature flower; The mature flowers are composed of a pair of guards, outer bars, inner bars, 2 paddles, 6 stamens and 1 pistil. The guard is very small, leaving only half-moon-shaped traces at the base of the spikelet stalk, cone-shaped; The gestational flowers on both sides are thick, with 5 veins, the midrib is ridged, the surface has a checkered small milky projections, thick paper, covered with fine hairs, with or without miscanthus The inner barn is homogeneous with the outer bar, with 3 veins, and the apex is pointed; The paddles are flattened; The stamens are composed of prismatic anthers and filamentous filaments; The pistil consists of a bottle-like ovary with a pinnate stigma.