How do you spell Orchis

Available Definitions:
1) n. - A genus of endogenous plants growing in the North Temperate zone, and consisting of about eighty species. They are perennial herbs growing from a tuber (beside which is usually found the last year's tuber also), and are valued for their showy flowers. See Orchidaceous .
2) n. - Any plant of the same family with the orchis; an orchid.