I bought these spath lilies at Home Depot about four years ago for 1 penny a piece! i thought these might be the ones that i see at malls that grow very large, but they've been outside for three years and they apparently must be a smaller (dwarf?) variety of peace lily. These even went through our freeze in January of 2007 (with temps in the low 20s for a whole week). Can anyone help me with what species these spathiphyllums are?

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