Horizon herbs has many herb including a couple types of ginger. I think they are plants though or living roots. I've looked into ginger myself and love that site. Heres a link to the ginger most medicinally potent:https://www.horizonherbs.com/product.asp?specific=jqgoppp0 From the picture its the same variety as in store with the latin name only 3 las letters off. Though 1 could be plural and the other single.
I dunno I don't speak latin
although that would be nice!