Calrose, the primary rice grown in California is a Japonica, its just Japanese rice grown in America. Tamanishiki, which is one of the high grade sushi rices is grown in the US and Japan
It is O. s. subsp. japonica
Good to know, however I always buy short grain brown rice, I like that one better.
> Calrose, the primary rice grown in California
Surprising, because while its widely available in California it seems to be a tiny minority of available rice. A search I did says it is 80% of California's crop, so presumably a lot of it is exported?