The most popular butterwort in cultivation, Pinguicula moranensis is easy to care for and makes a great candidate for windowsill and terrarium growing. It's a handsome ping and highly variable, as far a butterworts are concerned.
You say "gigantea," I say "gigantic." Pinguicula gigantea lives up to its name as the largest known Mexican butterwort with a diameter of around one foot. This ping is easy-growing, and does well outdoors at the author's Northern California residence.