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Plant them outside in a well-drained spot, var. pricei is fully hardy even here in Norway.
I'm no expert John but I did look to see what Edward Austin McRae had to say about Lilium oxypetalum var. insigne. He doesn't say a lot apart from 'flowers of purplish pink and green' and that seems to fit your pictures.
Beautiful plants - and I agree with you on the second, must be another L. mackliniae.