Asarum caudatum comes from the north western states of the USA and up into Canada. The white flowered forms make a vigorous clumps of fresh green leaves and seem to be as vigorous as the typical brown flowered plants.
The plants are deciduous, although in mild winters an occasional tatty leaf hangs on beyond its sell by date.
This plant has a slight rosy brown mark at the mouth of the flower, and the whole flowers has a greener tone than the plant above.
I have raised dozons of them from seed, and they vary slightly. I should probably pick out the best of them, but I haven't.