Oryza sativa Italy. In northern Iran, in Gilan province, many "indica" rice cultivars including 'Gerdeh', 'Hashemi', 'Hasani', and 'Gharib' have been bred by farmers. Mainstream archaeological evidence derived from palaeoethnobotanical investigations indicate dry-land rice was introduced to Korea and Japan sometime between 3500 and 1200 BC. The cultivation of rice then occurred on a small scale, fields were impermanent plots, and evidence shows that in some cases domesticated and wild grains were planted together. The technological, subsistence, and social impact of rice and grain cultivation is not evident in archaeological data until after 1500 BC. For example, intensive wet-paddy rice agriculture was
Rissoina oryza Rissoina oryza Rissoina oryza is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae. The height of the small, white shell attains 2 mm. The shell has an oblong-ovate shape. It is solid, smooth, and shining, The spire is moderately elevated, and rather rapidly tapering. The apex is obtuse. The 6-7 whorls are flatly convex. The body whoprl is rather large, and slightly compressed beneath. The suture is faintly impressed and broadly margined beneath. The rather large aperture is oblique and has a sub-ovate shape. The thick peristome is dilated. The columella is